When you wrapped the foam around your face and suggested it as a way to "drastically improve your experience of the world". I can always count on you making me smile at least once throughout your videos. 👍 Thank you!
Dr. Hossenfelder, if you ever decide to give up on physics, I really think you'd have a great career as a stand up comic. You're very funny, and your ultra serious delivery makes it so much funnier!
You had me at meta-chocolate! I've always had an idea for a large sculpture (not a sculptor, just an idea I have) where the sculpture is ringed by a series of transparent pillars with various angles of refraction across their surfaces. It would allow the figure to face you from different directions- sort of a more complex version of the Mona Lisa eyes, and then to appear different when you go inside the circle of pillars. (Some of the techniques from sculptures that only line up into an image from one direction might be involved too).
Nice job on meta materials its a massive subject and Sabine did a super job on super lenses. Pendry has some very interesting lectures on this and his sense of humor is meta funny. I highly recommend the ISS lectures with Pendry what a brilliant scientist!
Interesting question. The wavelengths for which superlenses have been manufactured so far don't lend themselves for this purpose. The ones I have read about were all below the visible range. However, it's possible that I have missed something, and in any case, I can't think of any reason why it shouldn't be possible.
In principle, yes, but it seems unlikely that it would work. Currently, we use EUV light at 13.5 nm for lithography. The problem with EUV is that pretty much everything is absorbant in this wavelength region. Therefore lithography optics in EUV don't use lenses but rely solely on parabolic mirrors to focus and redirect light, and even that becomes difficult. The superlens would need to transmit a sufficient amount of light and not be damaged by the intense EUV radiation, which doesn't seem likely.
@@hzdvb usually the photonic metamaterials I read about use the electrons in conductors to interact with the light. The resulting interface having different properties than the bulk material, hence metamaterial. I don't know much about resilience to EUV, but it really comes down to the conductor efficiency; making the ultra tiny structures able to handle the energy. In EUV research they use gold; but in an industrial setting it would probably be prohibitively expensive.
@@SabineHossenfelder speaking about interesting properties of meta materials. Some researchers focus on mechanical response such as negative Poisson’s ratio. But, did you know that an fcc single crystal has negative Poisson’s ratio when pulled along [110] direction? The thing is that for some interesting mechanical response we don’t need to build metamaterials.
Darn, just when I started to understand the basic fundamentals of physics - the stuff covered in just about a half-course of high school physics - you come along and put out this smorgasbord of new things to digest. Yikes!! Will there be even MORE complexity? . The chocolate would be fun to experience. { is there NO end to learning ?? } Yum, yum.
10:40 well, you'd need a 4d lightfield camera nad 4d lightfield projector for that to work fro mall angles still, with some development, sems more practical even if less perfect than some huge block of metamaterial
Questions of whether cheese exists or only the atoms exist are technically part of the subfield mereology, which involves the famous questions of Sorites Heap and Theseus's Ship. Of course the only consistent and reliable answer is that heaps and ships do not exist, only the mereological simples (which in QFT is the fields themselves) actually exist. Also, there are enough frames of your eyebrows I could in principle utilize the time dimension to help me figure out what number of eyebrows on each eye is required for the blur seen.
Maybe it was a fluke,but about 30,or more years ago I was working near a local airport,and since I was not busy for a couple of minutes,I walked out side my job site and saw and heard an aircraft warming to takeoff ,then it started to move and began to prepare to lift, making a good deal of jet noise,then suddenly lifted for takeoff and then rose up and was very quite,moved quickly then made a quick turn,with almost no sound and then became invisible in midair,so experiment by military with new technology or ???? Incidentally on a blimp like structure I commented on a previous video the outrageous speed and control was shocking and this was about 50 years ago ( Military Intelligence- Tesla like or U.F.O. couldn’t say.So much to know !!!!! Thanks for all the great info,great job.
The quip regarding making cars less easy to detect kind of went over my head. Wouldn't the technology have an application in improving the sensor efficiency of automatic vehicles or AI traffic conductors? Assuming this meta-material was cheap enough to manufacture and easy enough to apply/maintain that it could be implemented in pedestrian vehicle coating. I assume it isn't...
One do wonders how much research goes in to this when there are so many military applications. Of course, such research would want to be, for the most part, as secret as the objects they try to hide with metamaterials. Of course, there are a lot of non-military applications, as the Sabine showed. And a lot of those sound very interesting to me.
I take the Gnostic view...we're trapped light. And in fact all matter is built up from photons, spinning photons off the centre. And why is that? They can't travel faster than light, so colliding photons must stack. Somone more clever can explain how many photons make an electron, proton, etc. Physicists have found that moving photons have a slight mass...and they're always moving, even when they're trapped within our bodies. Some of us are more dense than others, however. lol.
How in the heckers do they manufacture a surface on a nano scale or is it micro..as etching oh... right so etching at an angle not as 90 degrees and to propagate further out the edges another etching at lower angles.. thats amazing we can do that.. its a bit better than Freznel lensesing (spelling)
It was obvious the tranfer pressure or energy from the Taiwan eqs would cross the visible fault lines, on Google Earth, to the East Pacific. I would have said that Chile would be hit- it still might- but a 7.6 mag has hit Mexico. Mw 7.6 Region MICHOACAN, MEXICO Date time 2022-09-19 18: 05: 08.5 UTC Location 18.37 N ; 103.25 W Depth 25 km. Mw 6.9 Region TAIWAN Date time 2022-09-18 06:44:17.6 UTC Location 23.22 N ; 121.36 E Depth 17 km. You would have thought the USGS would have issued an eq. warrning for the East Pacific. But they're so antiquated they can't join the dots. Only 2 have died in MEXICO so far; but they might as well close down the USGS for all the help it is in warning. There was a 5.1 mag. in Alaska less than an hour ago...so expect Chile, or the fulcrum point, Mexico, to be hit very soon. [ there, not that difficult, is it? within the hour or two is my forecast. ]
I never Meta material I did not like. As a semiconductor engineer photolithography of creating the gate of a transistor aw a big deal. Ultraviolet light started bending around the gate at 0.275 uM or 275 nM. They perform some tricks with lenses and have gotten the gate width down to about 14nM and it is projected to go down to 3 nM. Moore's law fell apart at around 275 nM.
I just LOVE this woman! I don't mean I would marry her but I sure wish I had her as a teacher! In usual videos about science, either there is real science but, if your don't already know the stuff, you can barely understand anything ; on others there no gobbledygook, but there is almost no science neither...
Gotta aim for an Ignobel Prize now, by developing a method to calculate the number of Sabine's eyebrows. I see this is becoming a running joke on the show… ;)
I literally just finished the videos on wireless power and 5g, where Sabine asks if we wanted to know more about meta-materials, and thought to myself, "yes please." This video was just in time. 😄 Thanks for sharing all this knowledge, it's greatly appreciated. ✌️💙
I’m still waiting for the invisibility cloak I ordered from an advertisement at the back of a comic book in June of 1968. Perhaps it will come in the same delivery as my Sea Monkey order.
Thank you... I have tried to explain to friends where the word "metaphysics" came from, but they don't believe me. They want to believe it means something like "better than physics" or "more important" or "transcendent over". My undergrad metaphysics prof thought this idea was funny and treated the truth like an inside joke. What it means is "the book that came after we compiled the book on physics", because there wasn't a more formal name for the topic yet. I once had a cat that had a litter of seven kittens. One of them ended up named "the other cat", or O.C. for short, just because we didn't know she existed until a few hours after the first six were born.
This is an incredibly naive and impoverished understanding of what we mean by metaphysics. It is shocking how many otherwise intelligent people are afflicted with a sort of cognitive scotoma with respect to categories such as the metaphysical. Naïve positivism at this stage of human intellectual development is an embarrassment, like the time Hawking committed 12 or so basic logical fallacies in the first few pages of one of his books.
@@csmac3144a The idea of metaphysics and the nature of existence is generally too esoteric for people outside of the interested communities to want to spend much time thinking about. It's naive, but that's all it *could* be, because people are people.
You are one of my favourite science communicators, full stop! No nonsense, serious business… with a sprinkle of joviality. Thank you Sabine, you rock! 🎉
An important application: I read that a metamaterial 'Lens ' for ultrasound could make ultrasound check images four times sharper, for the benefit of expectant mothers worrying about the fetus.
I imagine it would also make ultrasounds more useful for other diagnostic purposes as well. On several occasions I've been given an ultrasound which detects some mass is present, but can't get any clearer detail and needs additional imaging. So it'd be even more good news all around
I love your humor. Well timed and also very informative and insightful knowledge in between. I'm so glad I found your channel. Thank you for making science not only accessible but also entertaining.
Metaphysics is, for all practical purposes, a branch of philosophy. The study of metamaterials must therefore be the quest for the material a philosopher stone is built from. A similar material with a negative refractive index was referred in a paper from Isaac Asimov, the thiotimoline. Thiotimoline had a negative solubility time...
Ah yes, "The Endochronic Properties of Resublimated Thiotimoline". After creating endochronic polymers, it became possible to use the endochronicity to counter the effects of relativistic time dilation in space flight. (Yes, THAT guy again.) cf "Thiotimoline to the Stars".
@@kensho123456 No problems, but I strongly advise trying some book scifi, it usually takes interesting science concepts much more seriously than the likes of Star Trek and Star Wars.
Would it be possible to use an accoustic invisibility cloak to significantly reduce the sound of ships' motors without impacting the ships' ability to travel? Because honestly that does sound like something incredibly useful: Since sounds travel far farther in water than in air, noisy ships have become a huge problem to marine life. (I suspect it'd also be useful for covert military application, but honestly, if it's possible at all, it should kinda be a standard feature of boats in the future. This sound pollution is a rather big deal) In fact, "hiding from dolphins" is exactly what this would be for: Whale songs have changed to far higher pitched just to be able to hear each other over the constant drone of large ships.
That is a question for topology a branch of mathematics related to the study of properties conserved under continuous deformations which includes the number of holes within an object. In this context as the hole is continuous through the straw its one hole.
The straw itself has one hole, but since each end of the straw has a hole, the ends collectively have two holes. This is more a PROTOphysical question.
The only way to obtain invisibility its to make sure none of the light reflects back to the observer. But in that case you would see black. So there's 2 parts to it. Stopping an object from reflecting while also allowing the background to be reflected to the observer... not so easy.
Very interesting! Thanks for the video. And your comment about frequent zooming in UA-cam videos is spot on. Those folks should be fined for each instance. Also, you make a very fine Egyptian hieroglyph, Frau Doktor! 😃
I love Sabine, her cute German sense of humor, her intelligence is up there with all the great minds, and her ability to entertain while teaching is so refreshing to watch;
That was a really great intro to Meta-Materials, perfect balance of digestible information and humor. It will be interesting to see what we get when and if some entrepreneur gets their eureka moment.
Look up Edgar Fouche - Former Area 51 Employee who talked about metamaterials and invisibility research back in 1998. That's where I first learned about Metamaterials back in 2004... I have been researching them ever since!
Meta materials is the first step to controlling all waves in the universe, including gravity waves. The UFOs use this in their gratify wave amplifiers and emitters. Bob Lazar worked on these craft 40 years ago.
@Arbane's Sword of Agility Your god and your religion are the things that made me depressed twice during childhood and I don't need them anymore.(Btw the notification thing was 6 months ago,I am doing a lot better now)
@Arbane's Sword of Agility Orthodox christianity,gnosticism and new age religions.Tried all of them during my early childhood years and they didn't help me at all.
@Arbane's Sword of Agility I have.Things are slowly getting better for me.I still have social anxiety,body dysmorphia and rumination but it has been better than usual.
I can't help but notice her ever increasing amount of jokes... guess it's really not easy to keep a bunch of ytbers happy with this amount of science lol.
Really interesting indeed! Thanks, Sabine! 😃 I think the "car detection" material would help blind people to hear electric cars better. Less accidents. Anyway, stay safe there with your family! 🖖😊
I think a much better solution would be a device- an earpiece and some sort of detector for the car that could detect a signal. It would have to be extremely reliable, and probably have a failsafe mode so the person knew it wasn't working if it wasn't working. I know blind people have a particularly hard time with electric cars- but on the other hand, it's a pretty major quality of life issue to have quieter vehicles for other people outside. Some system something like this- and earpiece that the blind person wears, and a radio signal all EVs emit. The blind person, when they want to cross a road, presses a button on their earpiece and it sends a signal. It chirps to let them know it's working (so dead batteries don't lead to dead pedestrians). EVs would emit this signal by default, and the earpiece would detect it and give an auditory warning- direction, speed, etc. to the blind person. At the same time the earpiece could send a signal out to the car. For self-driving cars it could let them know a blind pedestrian needs to cross. An audio tone could play in the car for drivers to warn them to be more cautious- something like that could actually be used in a wrist strap for kids too, when they get close to the road. At proper intersections with crosswalks the earpiece signal could also interact with the traffic signal, triggering the signals the same way the walk buttons do, and sending back a signal to the blind person that the signal was received. The best version could then track the blind person's location in the crosswalk to make sure they made it across safely, or at least give a blind person a little more time than the normal amount of time. You could probably also add some magnets or other trigger in the crosswalk so that the blind person could more easily navigate the crosswalk with a sensor in their cane. (Or you could make a wearable camera system kind of like a self-driving car has that could feed information to blind people as they walk.) It all has to be designed failsafe though. The earpiece needs to give some signal to let the person know it's working properly, so that if it's not working the person doesn't just start walking thinking everything is clear. By notifying the car you add an extra layer of safety to the process. You can have the crosswalk chirp to help (although I've seen a bird that lived near a crossing learn to mimic the crossing chirp). Another option would be for the signal from the blind person to activate something in the car so it would start making noise. That would be very directional. It would be harder to do that as a failsafe though. /And, as with all adaptive technology, I think insurance should cover it.
@@nacoran Some pretty good ideas there indeed. I am almost blind... But not really at the same time. I lost 75% of field of view because of a brain surgery when I was 13. (The other option would be dying, so... No doubts there.) I only see with the left half of my right eye. But I see pretty well with it, I use glasses but it's a pretty small amount... Degree... I don't know how to say it in English. Either way, it's really curious, because if someone left something out of place at home I'm definitely going to collide with it. So I imagine how hard should it be to see nothing at all...
The metamaterial I'm most familiar with is a type of paint which absorbs virtually all of the light which impacts it. It does this by redirecting incoming light waves into a labyrinth of nanostructures, with the result of being close to the blackest black possible (96% absorption). It's actually really bizarre to see in action, as any object painted with it becomes an abyssal silhouette that lacks any defining features other than the outline.
Nighthawkinlight demonstrates a metamaterial with the exact opposite effect- extremely high reflectivity in visible light combined with high emissivity in IR. ua-cam.com/video/N3bJnKmeNJY/v-deo.html
Good text on the optical aspects: "Geometry & Light : The Science of Invisibility" by Ulf Leonhardt & Thomas Philbin (Dover publications). However not for the mathematically faint-hearted. Nice video.
Could a negative refracting light trap be used to store energy? Like a laser being spun around through eternal internal reflection? Would two screens and two opposing cameras not act as a meta material? If one camera projects onto the other screen, and that camera onto the front screen, it would appear you could look through them like a window, using two cameras and two lcd screens. If we could wear these two screens you would have an optical cloak perhaps. Could even work with 4 cameras or 6 cameras and screens for optically fooling observers on each axis.
I foresee and anticipate the meta-material development of composite alloys for fabricating wave channeling envelope skins of high speed vehicles/aircraft/submersibles/projectiles to drastically reduce friction with the air or water, reducing the heating effects while allowing increasing the rates of speeds through the medium, and possible stealth characteristics.
Appreciate your feedback It's a great pleasure hearing from you. Stay tuned for more videos,for participating our online investment Community⬆️reach out the number above
@Michael Gammon Einstein tells us matter is energy and energy is matter, right? Now all the money in my wallet is made of matter, which is QED energy. The money in my wallet disappears all the time. Hence, energy _does_ just disappear! Ha! I've run rings around you logically!
With metamaterials with a refractive index smaller than one (but positive), things can be made to appear further than they are. With asuch materials, we could make fake windows with scenery that appears far away.
With a refractive index of zero, light appears to move faster than the speed of light, but it does not really because metamaterials store energy causing the strange effects. With a negative index the light appears to move backwards in time.
Appreciate your feedback It's a great pleasure hearing from you. Stay tuned for more videos,for participating our online investment Community⬆️reach out the number above
But refractive index is reciprocal of the speed of light in the material in units of speed of light in empty space ... how can this be negative? I sort of know the answer but this video can address this issue...
Mirrors generally aren't my friend, the idea of a higher resolution view of myself before my first coffee sounds like a terrible idea, making the world less noisy though? Count me in!
I love your videos and your sense of humor. I especially like that I believe that some folks don't even know when you are being funny. I watch and smile and enjoy that the world has people like you.
Greetings from San Francisco, Sabine. Here's a challenge for next week: Can we you work a reference to BOTH Einstein AND cheese? It would make my Saturday complete.
Our host "walked like an Egyptian"! This subject post was so well presented (and satisfying) that when I finished watching it, my brain lit a cigarette...
Sabine's presentations make me believe I can understand stuff, and I'm pretty dense. Probably the effect of her meta seduction of a largely male (I'm guessing) following.
50% of EM researchers hate the word Metamaterial and consider it disingenuous. I am indifferent, but negative index material is a more accurate description.
Appreciate your feedback It's a great pleasure hearing from you. Stay tuned for more videos,for participating our online investment Community⬆️reach out the number above
When you wrapped the foam around your face and suggested it as a way to "drastically improve your experience of the world". I can always count on you making me smile at least once throughout your videos. 👍 Thank you!
More subtle, the holes in the foam reminding her of cheese - as many things seem to do!
Ive tested it, it dramaticly Increases the experience of some youtube videos
I believe this is the only known way to avoid news about the Royal family at the moment
Its even better if you can just get everyone else to wear one
@@kasroa Why, what's happened....?
Dr. Hossenfelder, if you ever decide to give up on physics, I really think you'd have a great career as a stand up comic. You're very funny, and your ultra serious delivery makes it so much funnier!
German humor is no laughing matter!
You had me at meta-chocolate!
I've always had an idea for a large sculpture (not a sculptor, just an idea I have) where the sculpture is ringed by a series of transparent pillars with various angles of refraction across their surfaces. It would allow the figure to face you from different directions- sort of a more complex version of the Mona Lisa eyes, and then to appear different when you go inside the circle of pillars. (Some of the techniques from sculptures that only line up into an image from one direction might be involved too).
New material science for the engineers to master. This was something I had never heard of. Many thanks for imparting this new bit of knowledge.
LOVE you pr approach to humour in science. You’re perfect omg
The orange plastic dish with the spirals that "changes the refractive index" reminded me of Stonehenge. That's the first thing that popped into mind.
🔝🔝ᴛᴇʟʟ ᴍᴀx ɪᴍᴍᴇᴅɪᴀᴛᴇʟʏ, ғᴏʀ ғɪɴᴀɴᴄɪᴀʟ ʟɪғᴇ ᴄʜᴀɴɢɪɴɢ ʙᴜsɪɴᴇss ɪɴᴠᴇsᴛᴍᴇɴᴛ/sᴏᴍᴇᴛʜɪɴɢ ɴᴇᴡ ᴘʀᴏғɪᴛᴀʙʟᴇ..📈🔝.
Nice job on meta materials its a massive subject and Sabine did a super job on super lenses. Pendry has some very interesting lectures on this and his sense of humor is meta funny. I highly recommend the ISS lectures with Pendry what a brilliant scientist!
Could superlenses be used in microchip manufacturing to photographically etch even smaller chip features than currently possible?
Interesting question. The wavelengths for which superlenses have been manufactured so far don't lend themselves for this purpose. The ones I have read about were all below the visible range. However, it's possible that I have missed something, and in any case, I can't think of any reason why it shouldn't be possible.
In principle, yes, but it seems unlikely that it would work. Currently, we use EUV light at 13.5 nm for lithography. The problem with EUV is that pretty much everything is absorbant in this wavelength region. Therefore lithography optics in EUV don't use lenses but rely solely on parabolic mirrors to focus and redirect light, and even that becomes difficult. The superlens would need to transmit a sufficient amount of light and not be damaged by the intense EUV radiation, which doesn't seem likely.
I was about to ask the same question.
@@hzdvb usually the photonic metamaterials I read about use the electrons in conductors to interact with the light. The resulting interface having different properties than the bulk material, hence metamaterial. I don't know much about resilience to EUV, but it really comes down to the conductor efficiency; making the ultra tiny structures able to handle the energy. In EUV research they use gold; but in an industrial setting it would probably be prohibitively expensive.
@@SabineHossenfelder speaking about interesting properties of meta materials. Some researchers focus on mechanical response such as negative Poisson’s ratio. But, did you know that an fcc single crystal has negative Poisson’s ratio when pulled along [110] direction? The thing is that for some interesting mechanical response we don’t need to build metamaterials.
"well that does away with selfie-sticks”
Lmao 🤣🤣
Your brand of humor is pure gold
Darn, just when I started to understand the basic fundamentals of physics - the stuff covered in just about a half-course of high school physics - you come along and put out this smorgasbord of new things to digest. Yikes!! Will there be even MORE complexity? . The chocolate would be fun to experience. { is there NO end to learning ?? } Yum, yum.
I was stupid as student but perseverant so great competencies and educator.
Some incredible technologies there. The ingenuity is mind blowing.
10:40
well, you'd need a 4d lightfield camera nad 4d lightfield projector for that to work fro mall angles
still, with some development, sems more practical even if less perfect than some huge block of metamaterial
I love the use of comedy in this episode. It somehow makes it easier to understand now.
Thank you so much for this beautiful video! Really eye opening !
Deadpan humour with a German accent is the best thing ever.
I wrapped my head in cheese and hid it from my pet mouse with an invisibility cloak, so he is still stuck in the maze.
Questions of whether cheese exists or only the atoms exist are technically part of the subfield mereology, which involves the famous questions of Sorites Heap and Theseus's Ship. Of course the only consistent and reliable answer is that heaps and ships do not exist, only the mereological simples (which in QFT is the fields themselves) actually exist.
Also, there are enough frames of your eyebrows I could in principle utilize the time dimension to help me figure out what number of eyebrows on each eye is required for the blur seen.
Maybe it was a fluke,but about 30,or more years ago I was working near a local airport,and since I was not busy for a couple of minutes,I walked out side my job site and saw and heard an aircraft warming to takeoff ,then it started to move and began to prepare to lift, making a good deal of jet noise,then suddenly lifted for takeoff and then rose up and was very quite,moved quickly then made a quick turn,with almost no sound and then became invisible in midair,so experiment by military with new technology or ???? Incidentally on a blimp like structure I commented on a previous video the outrageous speed and control was shocking and this was about 50 years ago ( Military Intelligence- Tesla like or U.F.O.
couldn’t say.So much to know !!!!! Thanks for all the great info,great job.
Thank you mam, Very informative. With little humor add ons. Very well done. I don't mind the video quality 😁👍
The energy transfered from the p , s waves into the system should be used to charge batteries or feed the grid...
Ear plugs that block loud noises but not normal volume ones. I suppose the militarily already have some.
Grazie mille prof. you are the greatest educatori and for sharing your super competence with tour stupid students.
The quip regarding making cars less easy to detect kind of went over my head. Wouldn't the technology have an application in improving the sensor efficiency of automatic vehicles or AI traffic conductors? Assuming this meta-material was cheap enough to manufacture and easy enough to apply/maintain that it could be implemented in pedestrian vehicle coating. I assume it isn't...
Thanks for the video :)
10:06 She probably knows that, but that is just a lenticular lens sheet, basically what it is used on those holographic tazos
One do wonders how much research goes in to this when there are so many military applications. Of course, such research would want to be, for the most part, as secret as the objects they try to hide with metamaterials.
Of course, there are a lot of non-military applications, as the Sabine showed. And a lot of those sound very interesting to me.
I take the Gnostic view...we're trapped light.
And in fact all matter is built up from photons, spinning photons off the centre. And why is that? They can't travel faster than light, so colliding photons must stack. Somone more clever can explain how many photons make an electron, proton, etc.
Physicists have found that moving photons have a slight mass...and they're always moving, even when they're trapped within our bodies. Some of us are more dense than others, however. lol.
Thank you for this video.
Maybe no gobbledygook but plenty of hokey-poke!
Best sense of scientific humor online
How in the heckers do they manufacture a surface on a nano scale or is it micro..as etching oh... right so etching at an angle not as 90 degrees and to propagate further out the edges another etching at lower angles.. thats amazing we can do that.. its a bit better than Freznel lensesing (spelling)
It was obvious the tranfer pressure or energy from the Taiwan eqs would cross the visible fault lines, on Google Earth, to the East Pacific. I would have said that Chile would be hit- it still might- but a 7.6 mag has hit Mexico.
Mw 7.6
Region MICHOACAN, MEXICO
Date time 2022-09-19 18: 05: 08.5 UTC
Location 18.37 N ; 103.25 W
Depth 25 km.
Mw 6.9
Region TAIWAN
Date time 2022-09-18 06:44:17.6 UTC
Location 23.22 N ; 121.36 E
Depth 17 km.
You would have thought the USGS would have issued an eq. warrning for the East Pacific. But they're so antiquated they can't join the dots. Only 2 have died in MEXICO so far; but they might as well close down the USGS for all the help it is in warning.
There was a 5.1 mag. in Alaska less than an hour ago...so expect Chile, or the fulcrum point, Mexico, to be hit very soon. [ there, not that difficult, is it? within the hour or two is my forecast. ]
There it is:
M 3.5
Region ANTOFAGASTA, CHILE
Date time 2022-09-20 09:27:06.0 UTC
Location 22.12 S ; 68.60 W
Depth 115 km.
Within the hour.
I never Meta material I did not like. As a semiconductor engineer photolithography of creating the gate of a transistor aw a big deal. Ultraviolet light started bending around the gate at 0.275 uM or 275 nM. They perform some tricks with lenses and have gotten the gate width down to about 14nM and it is projected to go down to 3 nM. Moore's law fell apart at around 275 nM.
All light we see with our eyes is a result of negative refraction. What we see with our eyes is generally not light in a medium but it's reflection.
The bottom picture is similar to heat waves?
Are you a Predator ? We can't see heat waves.
I just LOVE this woman! I don't mean I would marry her but I sure wish I had her as a teacher!
In usual videos about science, either there is real science but, if your don't already know the stuff, you can barely understand anything ; on others there no gobbledygook, but there is almost no science neither...
Not many people know this, but Sabine's sense of humour is actually made from a cutting-edge hyper-hydrophobic metamaterial.
Lol 😆
A Bond martini, stirred.
Her sense of humor is also oleophobic.
A rabid sense of humour?
I believe it
Sabine, Thank you for providing "humor in science" along with the education.
So true!
Gotta aim for an Ignobel Prize now, by developing a method to calculate the number of Sabine's eyebrows. I see this is becoming a running joke on the show… ;)
Or, something with dairy-based food materials.
Probably somebody not long ago mentioned her eyebrows for some reason and she’s getting back to that person.
A fairly easy calculation: 1 + 1 = 2
The number of *hairs* in the eyebrows is the question. I don’t think the answer 2 will get you the Ignobel prize.
I've only recently discovered your channel, but the way you combine interesting science with a great way of talking makes me really happy.
I literally just finished the videos on wireless power and 5g, where Sabine asks if we wanted to know more about meta-materials, and thought to myself, "yes please."
This video was just in time. 😄
Thanks for sharing all this knowledge, it's greatly appreciated. ✌️💙
How soon will we have a video on meta-non-materials?
@@scoreprinceton It accompanied
@@garcoleuphrates4734 No wonder I missed it!!
I’m still waiting for the invisibility cloak I ordered from an advertisement at the back of a comic book in June of 1968.
Perhaps it will come in the same delivery as my Sea Monkey order.
Thank you... I have tried to explain to friends where the word "metaphysics" came from, but they don't believe me. They want to believe it means something like "better than physics" or "more important" or "transcendent over". My undergrad metaphysics prof thought this idea was funny and treated the truth like an inside joke. What it means is "the book that came after we compiled the book on physics", because there wasn't a more formal name for the topic yet.
I once had a cat that had a litter of seven kittens. One of them ended up named "the other cat", or O.C. for short, just because we didn't know she existed until a few hours after the first six were born.
This is an incredibly naive and impoverished understanding of what we mean by metaphysics. It is shocking how many otherwise intelligent people are afflicted with a sort of cognitive scotoma with respect to categories such as the metaphysical. Naïve positivism at this stage of human intellectual development is an embarrassment, like the time Hawking committed 12 or so basic logical fallacies in the first few pages of one of his books.
@@csmac3144a The idea of metaphysics and the nature of existence is generally too esoteric for people outside of the interested communities to want to spend much time thinking about.
It's naive, but that's all it *could* be, because people are people.
You are one of my favourite science communicators, full stop! No nonsense, serious business… with a sprinkle of joviality. Thank you Sabine, you rock! 🎉
Apart from that one video where she talks about how capitalism is good :D
How can I get into a research study about the meta-chocolate?
Asking an important question here. 👍
I am willing to be a test subject.
An important application: I read that a metamaterial 'Lens ' for ultrasound could make ultrasound check images four times sharper, for the benefit of expectant mothers worrying about the fetus.
I imagine it would also make ultrasounds more useful for other diagnostic purposes as well. On several occasions I've been given an ultrasound which detects some mass is present, but can't get any clearer detail and needs additional imaging. So it'd be even more good news all around
I think you missed a major opportunity by not referencing the Yatuja aka “The Predator”.
I love your humor. Well timed and also very informative and insightful knowledge in between. I'm so glad I found your channel. Thank you for making science not only accessible but also entertaining.
I used to watch these videos for the science. Now I watch them for Sabine's genius cheesy jokes 😂.
Metaphysics is, for all practical purposes, a branch of philosophy.
The study of metamaterials must therefore be the quest for the material a philosopher stone is built from.
A similar material with a negative refractive index was referred in a paper from Isaac Asimov, the thiotimoline. Thiotimoline had a negative solubility time...
Ah yes, "The Endochronic Properties of Resublimated Thiotimoline". After creating endochronic polymers, it became possible to use the endochronicity to counter the effects of relativistic time dilation in space flight. (Yes, THAT guy again.) cf "Thiotimoline to the Stars".
@@kensho123456
You do get that they are mostly just referencing a trope from a scifi book, don't you ?
@@kensho123456
No problems, but I strongly advise trying some book scifi, it usually takes interesting science concepts much more seriously than the likes of Star Trek and Star Wars.
Would it be possible to use an accoustic invisibility cloak to significantly reduce the sound of ships' motors without impacting the ships' ability to travel?
Because honestly that does sound like something incredibly useful: Since sounds travel far farther in water than in air, noisy ships have become a huge problem to marine life.
(I suspect it'd also be useful for covert military application, but honestly, if it's possible at all, it should kinda be a standard feature of boats in the future. This sound pollution is a rather big deal)
In fact, "hiding from dolphins" is exactly what this would be for: Whale songs have changed to far higher pitched just to be able to hear each other over the constant drone of large ships.
Damn, there is so much jokes in this episode that this channel will soon become a comedy channel :D
Lovin' it Sabine, keep it up.
I was going to create some meta-materials--but then things got really busy at work.
I'm going to engage in metapolitics, in which I use interference to alter the optics of the situation
Ha 😅
Speaking of metaphysical questions, do straws have one hole or two?
That is a question for topology a branch of mathematics related to the study of properties conserved under continuous deformations which includes the number of holes within an object.
In this context as the hole is continuous through the straw its one hole.
@@Dragrath1 So if you closed off one end, would it still have a hole?
The straw itself has one hole, but since each end of the straw has a hole, the ends collectively have two holes. This is more a PROTOphysical question.
@@philochristos topologically it would not have a hole i.e. a coffee cup and a donut are considered topologically equivalent.
The only way to obtain invisibility its to make sure none of the light reflects back to the observer. But in that case you would see black. So there's 2 parts to it. Stopping an object from reflecting while also allowing the background to be reflected to the observer... not so easy.
Very interesting! Thanks for the video. And your comment about frequent zooming in UA-cam videos is spot on. Those folks should be fined for each instance.
Also, you make a very fine Egyptian hieroglyph, Frau Doktor! 😃
I love Sabine, her cute German sense of humor, her intelligence is up there with all the great minds, and her ability to entertain while teaching is so refreshing to watch;
That was a really great intro to Meta-Materials, perfect balance of digestible information and humor. It will be interesting to see what we get when and if some entrepreneur gets their eureka moment.
Look up Edgar Fouche - Former Area 51 Employee who talked about metamaterials and invisibility research back in 1998. That's where I first learned about Metamaterials back in 2004... I have been researching them ever since!
So wha I've learned is that the brain has an awesome ray-tracer installed.
".. it's not what a fish is supposed to do." Love it. Thank you.
This is pretty much Star Trek technology already, what comes next? Food replicators?
Meta materials is the first step to controlling all waves in the universe, including gravity waves.
The UFOs use this in their gratify wave amplifiers and emitters.
Bob Lazar worked on these craft 40 years ago.
Hello Sabine.Your videos really helped me during certain tough times in my life and one of your notifications saved me from suicide.Thank you.
@Arbane's Sword of Agility Your god and your religion are the things that made me depressed twice during childhood and I don't need them anymore.(Btw the notification thing was 6 months ago,I am doing a lot better now)
I'm sorry about your difficulties. I understand the situation well. Please take good care of yourself.
@@SabineHossenfelder Thank you.I will
@Arbane's Sword of Agility Orthodox christianity,gnosticism and new age religions.Tried all of them during my early childhood years and they didn't help me at all.
@Arbane's Sword of Agility I have.Things are slowly getting better for me.I still have social anxiety,body dysmorphia and rumination but it has been better than usual.
I can't help but notice her ever increasing amount of jokes... guess it's really not easy to keep a bunch of ytbers happy with this amount of science lol.
Really interesting indeed! Thanks, Sabine! 😃
I think the "car detection" material would help blind people to hear electric cars better. Less accidents.
Anyway, stay safe there with your family! 🖖😊
I think a much better solution would be a device- an earpiece and some sort of detector for the car that could detect a signal. It would have to be extremely reliable, and probably have a failsafe mode so the person knew it wasn't working if it wasn't working. I know blind people have a particularly hard time with electric cars- but on the other hand, it's a pretty major quality of life issue to have quieter vehicles for other people outside.
Some system something like this- and earpiece that the blind person wears, and a radio signal all EVs emit. The blind person, when they want to cross a road, presses a button on their earpiece and it sends a signal. It chirps to let them know it's working (so dead batteries don't lead to dead pedestrians). EVs would emit this signal by default, and the earpiece would detect it and give an auditory warning- direction, speed, etc. to the blind person. At the same time the earpiece could send a signal out to the car. For self-driving cars it could let them know a blind pedestrian needs to cross. An audio tone could play in the car for drivers to warn them to be more cautious- something like that could actually be used in a wrist strap for kids too, when they get close to the road. At proper intersections with crosswalks the earpiece signal could also interact with the traffic signal, triggering the signals the same way the walk buttons do, and sending back a signal to the blind person that the signal was received. The best version could then track the blind person's location in the crosswalk to make sure they made it across safely, or at least give a blind person a little more time than the normal amount of time. You could probably also add some magnets or other trigger in the crosswalk so that the blind person could more easily navigate the crosswalk with a sensor in their cane. (Or you could make a wearable camera system kind of like a self-driving car has that could feed information to blind people as they walk.) It all has to be designed failsafe though. The earpiece needs to give some signal to let the person know it's working properly, so that if it's not working the person doesn't just start walking thinking everything is clear. By notifying the car you add an extra layer of safety to the process. You can have the crosswalk chirp to help (although I've seen a bird that lived near a crossing learn to mimic the crossing chirp). Another option would be for the signal from the blind person to activate something in the car so it would start making noise. That would be very directional. It would be harder to do that as a failsafe though.
/And, as with all adaptive technology, I think insurance should cover it.
@@nacoran Some pretty good ideas there indeed.
I am almost blind... But not really at the same time. I lost 75% of field of view because of a brain surgery when I was 13. (The other option would be dying, so... No doubts there.) I only see with the left half of my right eye. But I see pretty well with it, I use glasses but it's a pretty small amount... Degree... I don't know how to say it in English.
Either way, it's really curious, because if someone left something out of place at home I'm definitely going to collide with it. So I imagine how hard should it be to see nothing at all...
The metamaterial I'm most familiar with is a type of paint which absorbs virtually all of the light which impacts it. It does this by redirecting incoming light waves into a labyrinth of nanostructures, with the result of being close to the blackest black possible (96% absorption). It's actually really bizarre to see in action, as any object painted with it becomes an abyssal silhouette that lacks any defining features other than the outline.
Nighthawkinlight demonstrates a metamaterial with the exact opposite effect- extremely high reflectivity in visible light combined with high emissivity in IR.
ua-cam.com/video/N3bJnKmeNJY/v-deo.html
Good text on the optical aspects: "Geometry & Light : The Science of Invisibility" by Ulf Leonhardt & Thomas Philbin (Dover publications). However not for the mathematically faint-hearted. Nice video.
Yes an excellent example of conformal mapping!
German humor is new British humor.
We can call it The Uber Humor.
Could a negative refracting light trap be used to store energy? Like a laser being spun around through eternal internal reflection?
Would two screens and two opposing cameras not act as a meta material? If one camera projects onto the other screen, and that camera onto the front screen, it would appear you could look through them like a window, using two cameras and two lcd screens. If we could wear these two screens you would have an optical cloak perhaps.
Could even work with 4 cameras or 6 cameras and screens for optically fooling observers on each axis.
Sure but if you dropped your pencil in the crowd & bent down to pick it up it would look .... weird.
I want some carbon nano cheese in superposition so I can eat it, while also leaving it on the plate to eat later.
My favorite Saturday morning class and teacher. I love the knee slappers. 'uhh yucka yucka yucka' Thanks Sabine
I foresee and anticipate the meta-material development of composite alloys for fabricating wave channeling envelope skins of high speed vehicles/aircraft/submersibles/projectiles to drastically reduce friction with the air or water, reducing the heating effects while allowing increasing the rates of speeds through the medium, and possible stealth characteristics.
Appreciate your feedback
It's a great pleasure hearing from you.
Stay tuned for more videos,for participating our online investment Community⬆️reach out the number above
❤️ you Sabine! Never lose your sense of humor!
Great video, Sabine! It will take me a little time to reflect on it though ...
A team of researchers from the Netherlands just created the Cadbury Flake, which was introduced in 1920? 🤔
This will all be worked out when someone figures out how to use it in porn.
I always enjoy your videos, the topics are typically interesting and well presented.
Wouldn't redirecting earthquake waves to protect certain areas, make it worse for other areas?
Interesting question. The energy has to go **somewhere**. But where?
away from population centres into some random hills or something
It could heat up the metamaterial?
Not necessarily, the energy could be absorbed by the metamaterial or harmlessly travel through it without being reflected.
@Michael Gammon Einstein tells us matter is energy and energy is matter, right? Now all the money in my wallet is made of matter, which is QED energy. The money in my wallet disappears all the time. Hence, energy _does_ just disappear! Ha! I've run rings around you logically!
With metamaterials with a refractive index smaller than one (but positive), things can be made to appear further than they are. With asuch materials, we could make fake windows with scenery that appears far away.
Rear view mirrows already do this. Or try looking through binoculars backwards.
With a refractive index of zero, light appears to move faster than the speed of light, but it does not really because metamaterials store energy causing the strange effects. With a negative index the light appears to move backwards in time.
Aristotles didn't call it Metaphysics: that happened later, when his philosophy book happened to follow his physics work in the published volume
Appreciate your feedback
It's a great pleasure hearing from you.
Stay tuned for more videos,for participating our online investment Community⬆️reach out the number above
But refractive index is reciprocal of the speed of light in the material in units of speed of light in empty space ... how can this be negative? I sort of know the answer but this video can address this issue...
Yeah, that should've been brought up. I suppose it has more to do with direction of travel?
@@Laff700 No. The medium is dispersive so this method of calculating refractive index does not work ...
Yes light appears to move backwards in time, but it is an artifact of energy stored in the material. The group velocity moves forward in time.
Love you! Keep it going, Thanks for your amazing perspective! I also like the script was written, so praise the writers. And the editing.
Meta materials are materials that sell your personal data?
🔝🔝-ᴄᴏɴᴛᴀᴄᴛ ᴍᴀx ᴛʜᴏᴍᴘsᴏɴ ᴅɪʀᴇᴄᴛʟʏ ғᴏʀ ᴀ ʙᴜsɪɴᴇss ғɪɴᴀɴᴄɪᴀʟ ɪɴᴠᴇsᴛᴍᴇɴᴛ☝️☝️**
A selfie camera permanently attached to one's face. What a brilliant idea.
Can you do a video on Graphene and nano sheets?
🔝🔝-ᴄᴏɴᴛᴀᴄᴛ ᴍᴀx ᴛʜᴏᴍᴘsᴏɴ ᴅɪʀᴇᴄᴛʟʏ ғᴏʀ ᴀ ʙᴜsɪɴᴇss ғɪɴᴀɴᴄɪᴀʟ ɪɴᴠᴇsᴛᴍᴇɴᴛ☝️☝️**
Mirrors generally aren't my friend, the idea of a higher resolution view of myself before my first coffee sounds like a terrible idea, making the world less noisy though? Count me in!
I love your videos and your sense of humor. I especially like that I believe that some folks don't even know when you are being funny. I watch and smile and enjoy that the world has people like you.
Greetings from San Francisco, Sabine. Here's a challenge for next week: Can we you work a reference to BOTH Einstein AND cheese? It would make my Saturday complete.
🔝🔝 ᴡʀɪᴛᴇ ᴍᴀx ᴛʜᴏᴍᴀs ɴᴏᴡ, ʜᴇ ʜᴀs ʜᴇʟᴘғᴜʟ ɪɴғᴏʀᴍᴀᴛɪᴏɴ ᴛᴏ sʜᴏᴡ ʏᴏᴜ ᴀɴᴅ ᴀʟsᴏ sᴏᴍᴇᴛʜɪɴɢ ɴᴇᴡ ᴘʀᴏғɪᴛᴀʙʟᴇ ɪɴ ʙᴜsɪɴᴇss ɪɴᴠᴇsᴛᴍᴇɴᴛ📈🔝.
Now I have "Walk Like An Egyptian" stuck in my head!
Our host "walked like an Egyptian"! This subject post was so well presented (and satisfying) that when I finished watching it, my brain lit a cigarette...
Well said.
Sabine's presentations make me believe I can understand stuff, and I'm pretty dense. Probably the effect of her meta seduction of a largely male (I'm guessing) following.
🔝🔝-ʀᴇᴀᴄʜ ᴍᴀx ɪᴍᴍᴇᴅɪᴀᴛᴇʟʏ ғᴏʀ ᴀ ғɪɴᴀɴᴄɪᴀʟ ʟɪғᴇ ᴄʜᴀɴɢɪɴɢ ʙᴜsɪɴᴇss ɪɴᴠᴇsᴛᴍᴇɴᴛ/ sᴏᴍᴇᴛʜɪɴɢ ɴᴇᴡ ᴘʀᴏғɪᴛᴀʙʟᴇ👆📊.
"If you want to hide from dolphins". She is Hilarious
A really cool presentation...there is so much going on in this world that we don't understand, it is fun to get a quick glimpse
Those are some really wide wood boards behind you :-)
Metamaterials don’t seem very “meta” at all. Was “supermaterials” already taken?
50% of EM researchers hate the word Metamaterial and consider it disingenuous. I am indifferent, but negative index material is a more accurate description.
Appreciate your feedback
It's a great pleasure hearing from you.
Stay tuned for more videos,for participating our online investment Community⬆️reach out the number above
That was a cheesy intro. 😛
I'll see myself out...
🔝🔝ᴛᴇʟʟ ᴍᴀx ɪᴍᴍᴇᴅɪᴀᴛᴇʟʏ, ғᴏʀ ғɪɴᴀɴᴄɪᴀʟ ʟɪғᴇ ᴄʜᴀɴɢɪɴɢ ʙᴜsɪɴᴇss ɪɴᴠᴇsᴛᴍᴇɴᴛ/sᴏᴍᴇᴛʜɪɴɢ ɴᴇᴡ ᴘʀᴏғɪᴛᴀʙʟᴇ..📈🔝
What about metalenses that work the same as normal ones but are paper thin?
🔝🔝 ᴡʀɪᴛᴇ ᴍᴀx ᴛʜᴏᴍᴀs ɴᴏᴡ, ʜᴇ ʜᴀs ʜᴇʟᴘғᴜʟ ɪɴғᴏʀᴍᴀᴛɪᴏɴ ᴛᴏ sʜᴏᴡ ʏᴏᴜ ᴀɴᴅ ᴀʟsᴏ sᴏᴍᴇᴛʜɪɴɢ ɴᴇᴡ ᴘʀᴏғɪᴛᴀʙʟᴇ ɪɴ ʙᴜsɪɴᴇss ɪɴᴠᴇsᴛᴍᴇɴᴛ📈🔝.