So does this hold up with Speedy Gonzales and the Roadrunner? Don’t think the coyote gets the same effect as he’s interrupted by midair followed by a crash!
I have a lot of respect for Chuck. He’s brings a perfect mix of comedy and continuity, he’s able to make things relatable and entertaining for us. It’s not an easy job to be able to grasp all the concepts he does and then turn them into timely jokes that are actually funny
As soon Dr. Neil made the doppler sound effect with his voice, i looked at Chuck's face and it was like we knew both what to say "The MEME". AHAHA Always an excellent scientific educator Dr. Neil is.
I love how he doesn't care about popularity it's more of education and still standing strong to his beliefs.. My favorite teacher and role model to all the youth that he can reach 💜
My ears heard this when I was a child but I could not have explained it till now. Listened from the side of a freeway when cars were travelling past at high speeds. I waited a long time for that explanation. Thank you! My brothers made that sound frequently. He can also speak in Donald Duck.
This was great. I knew about the Doppler effect, and I was curious if it had a effect on light waves. Neil described it perfectly. I was also curious about red shift and blue shift, and now I know. Thank you so much for this video, it exceeded my expectations.
So if sun suddenly started to "fly" towards us, would it change colours? (If its some speed but not a speed of light)? From white as it is to... blue? :) etc..!
@@MrRichieHK I imagine it would slightly, I would think it's too close for a blue shift to really take effect before other thing got really weird and catastrophic
@@StarTalk that's what I love about you Neil, you want to be famous, but not for personal gain. But to advance scientific thought in everyone you reach. For that I applaud you. I'm a blue collar worker who has always had an interest in astronomy since I was a kid. You have shown me more about the universe and astrophysics than I would have ever figured out on my own. I'm even getting into quantum physics, and picking apart relativity. All I have is a highschool education, but with your help, I know there is no limit to what we can know
You two are as entertaining as the car talk guys were, and the names of your shows rhyme. Coincidence? No matter, I love this show and learn so much while cracking up laughing right along with you!
Hi Neil, Have you ever done a Startalk about the reason that we can see the sun and a less than full moon at the same time? Someone recently asked me about this, and while I think I understand the situation, I could not adequately explain it. Thanks for keeping us educated.
Never in my dreams could I have imagined I could reach out like this as a kid watching; now with technology it’s possible absolutely stunning to me Astronomy was my first choice as a carrier in fifth grade well sorta reached it by writing a book about The sun lol Solar Independent Utility Systems Manual Never reached anyone yet but maybe with this technology I can overcome this as well ! Btw how are you liking the new photos from the new Webb telescope I seen the very first images they released; absolutely mind blowing awesomeness and sharing everything with my family as they appear But again thank you for all the knowledge as it really opened my brain to the universe and went on to utilize its photons lol Very best wishes to you !
🎯Thanks for help making the next generation of Black nerds look cool.👍🏿 💡Please interview Lonnie Johnson, the scientist, inventor and researcher working on next gen batteries.💦🔫
Me: "Oh I know what the Doppler effect is. I don't need to watch this...." Also me: **watching with fascination because StarTalk 'splainers are the best** 😻
The problem with "I know this" is more often than not, you really don't... I don't mean you, I include myself but I'm not posh enough to use "one knows". Given an object emitting a sounds at frequency x, moving a velocity v, heading in the direction v, situated at vector p relative to you. Can you predict the sound frequency change for you? Only if you can do that do you understand the Doppler Effect. Science is hard and bridging the gap between an ad hoc understanding and actual science is surprisingly enlightening and definitely worth the effort.
The coincidence of listening to this episode while driving a Freightliner Cascadia with driver assistance features like the exact distance a car is, and how fast they are going was truly a lovely experience 😆👍
The cause of the Dopler Effect is that sound travels at the same speed though a given medium, no matter how fast the source of the sound is moving. The speed of the source adds or decreases energy to the wave and since the wave cannot increase in speed, the energy change is seen in the change of frequency. Red shift is not cause by the distance changing due to expansion. Red shift is cause by the speed of the source, gravity and the medium that the light travels in.
The higher pitch is easier to amplifie. It’s from the resonance of the motor the whole train is essentially a resonator box. Like a tornado whistles. The low end frequency comes later. Or the natural sound of the train. I learned Doppler effect from state troopers in grade school and the radar gun.
This is not true at all your not hearing amplitude or a amplifier. Sound waves moves in a 360 degrees and each wave then also will Absorb, reflect, rarefaction etc and move in another 360 degrees. what you are confusing is sound presence with amplitude. Sound doesn’t have to be amplified to hear it. Sound waves are just sound pressure which creates it own air mass so it’s pressure that builds up in your ears. Something being higher or lower doesn’t make amplitude easier or harder it just gives you a greater presence. Which is considered loudness
So RAM (radar absorbent material) used by the military, tends to be an iron silicate suspended in a bonding agent. Besides being expensive to get it also adds a lot of weight to the objects coated with it.
This phenomenon is also observable if you see a duck swimming in a pond. Every time the duck paddles its feet, it sends a wave outward. And because the duck is moving in a direction, you will see that the waves in front of the duck are closer to each other than behind the duck
Hi you guys 🤗 It was interesting to hear about the Redshift...,, 😉 I won't be here when the 2 Galaxys collide to see it go blue, but, it's nice to know that it will happen as you say. Now, I noticed you missed one little segment about the Doppler Effect or your "Dopplershift" if you are inside that car an the sounds you hear will always remain the same until it slows down to come to a stop or it changes speed to go a bit faster. You didn't address that part 🤔 Why not? It's important to know also 😌 Love these with you so, so much young man, thanks!
Hey chuck and Neil can you do a video clip about you personal take on the tv series “The Orville” and aside from the main comedic side of the show did they capture any real representation of what space travel could be like?
I'm having trouble with the physics here, as applied to light. NDT says the doppler affect is due to speed (only, I think). Beginning around 6:32 and specifically around 6:50 he says that light traveling away from us (slower) will be redshifted and light traveling towards us (faster) will be blued shifted. I understand (and was taught in college) that the speed of light is the same for all observers. It always travels at the speed of light (in a vacuum, like space). So if the Doppler effect in light is not due to changes in the speed of the light, what is it caused by? How does the light continue its speed, as a constant, and yet, present us with different color frequencies as we observe it? Thanks for any responses.
“The Final Theory: Rethinking Our Scientific Legacy “, Mark McCutcheon for proper physics including light. Doppler applies to sound not light as you surmise: light is a cluster of expanding electrons, particles not a ‘wave.’
light cannot be travelling slower or faster away from you, have you not heard of special relativity ? redshift means the light beam is losing energy in respect to your position redshift and blue shift are totally relative to the observer meaning one observer is looking at a light beam while measuring a redshift for this light beam meanwhile another observer is looking at the exactly same light beam and is measuring blue shift for this light beam energy loss or energy gain for light is totally relative to the observer, and light cannot be traveling faster or slower as the speed of light is you travel at 1 mph and you measure the speed for light to be exactly 100% of c, you travel at 99,999999% of c and you measure the speed for light to be exactly 100% of c meaning it doesn't matter how fast you are moving because light is always moving at 100% of c in respect to you, this is because you are always stationary in respect to light this means the only true motion that there is is the speed of light however at the speed of light there is no motion at all
@@kokolame4704 Thanks so much for your reply. My question was (and is) since the speed of light is the same for all observers, how is it that there is redshift and blueshift? Since light speed is constant, how and why is it 'losing energy'? Your answer seems to be that light is losing energy due to my movement, which I gather from your comment is not 'true movement'. Focusing on your last sentence, if the only true motion is the speed of light, and if, at the speed of light there is no motion at all, then it seems to me that the emitted frequency of light from the light source should also be a constant and that it should not lose energy, particularly if there is no movement. No?
@@stevendixon1339 light is not loosing any energy, it's just the oscillation between the magnetic and electric field that has a longer and longer aplitude once it is traveing from you away in other other words light that is travelling towards you is blue shifted FOR YOU light that is travelling from you away is red shifted FOR YOU so yes, the amplitude of wavelenght of light is RELATIVE TO THE OBSERVER now, let's take it to another level let's say a galaxy is in a vacuum of space that is accelerating faster and faster in respect to your position [the vacuum is accelerating, not the galaxies themselves but the galaxies are in the vacuum so they are accelerating indirectly since the vacuum is accelerating, [think of a sheet paper where is drawn a picture, now imagine you start dragging the sheet of paper - the sheet of paper is accelerating physically not the picture on that paper however the picture is depicted on that paper then it is indirectly moving as well the vacuum is the sheet of paper, the galaxy is the picture] at time interval X you are measuring the light that is coming out of a galaxy towards yourself, you are measuring a certain wavelenght of light at time interval X + 10 months you are again measuring the very same galaxy, and you are finding out the light of this galaxy has a longer amplitude [it got red shifted in respect to your prior measurement] than before, you are getting the vacuum in which the galaxy is, is expanding from your position away thus taking the galaxy with itself, too this is how we have got the space between the galaxies is expanding, and the hubble telescope then shockingly revelead the expansion is accelerating so, if light "looses or getting energy" it travels at the speed of light anyway, the "energy loss or gain" is relative to the observer only
LOL!!! Chuck's face when Neil was making the car noises🤣🤣🤣 Tell Neil youv'e got to get down and walk along against the fence at the NASCR race to experience it. You've got to be sneaky though to time it right, and don't linger 'cuz they'll yell at you... been there, done that!
Standing right next to the track at Michigan International Speedway, the doppler effect is astonishing. Also one's eyes cannot focus on an object passing at 200+ MPH.
And off course it has been and can always measured, actually the project "breaktrough starshot" even plans to launch interstellar light sails and use just laser light as a propelant
Neil at the NASCARS: Spectating fan: * wearing backwards trucker hat, aggressively eating a corndog * Neil in next seat: "did you know there are microphones all around the track picking up the sounds of the racecars?" fan: "oh hey! youre the guy from that signpost meme! that was so funny man!"
In Japan every car's speedometer is set to show an 8% higher speed than your actual one and the police never stops you unless you go 20+Km over the posted speed limit. So, if you get a ticket you know for sure you were actually speeding.
Jimi Hendrix utilizes the doppler effect in his famous Star Spangled Banner performance at Woodstock, where he emulates ambulance sirens. He unbends the strings while hammering with his fingers on the neck of the guitar back and forth, which bends the familiar siren notes down as happens in the Doppler effect. I think he also emulates it when he does the sound of bombs falling from the sky.
Surely it must. We see the effect of the doppler effect on surface waves for a disturbance on the surface, but since water is a medium just like air, it makes sense that it would occur. But then, water is essentially treated as incompressible. I would love to hear Neil weigh in on this question.
I found this in the Wiki page on Sonar - but it didn't elaborate "Particularly when single frequency transmissions are used, the Doppler effect can be used to measure the radial speed of a target. The difference in frequency between the transmitted and received signal is measured and converted into a velocity. Since Doppler shifts can be introduced by either receiver or target motion, allowance has to be made for the radial speed of the searching platform. "
@@iamdb1990 Wrong. Anyone who's ever been under water can tell you that sound travels under water. How do you think sonar works on submarines? Or the echolocation ability of cetaceans?
Ok so here is my story. I got a ticket for speeding through a road on which there were men at work. Here in Italy on regular roads the limit for that specific circumstance is 30Kmh. If you are going faster than 40kmh the speed limit, your license gets revoked. Considering that they give you 5kmh bonus to compensate inaccuraccy of your car that limit would have been 75Kmh, at 76 my license would have been taken from me on the spot. I got exactly 75. Now that I know I was going faster then what the gun registered I feel even more lucky than I felt before. Definitely too close for comfort.
Lol 2nd…sound waves compress as they get closer (higher pitch) and decompress as they go further away (lower pitch). It’s essential knowledge as a sound and music composer in my world!
8:45 "When they are off to the side of the road, not all of your car's motion is towards the radar gun; only some of it". I used to notice that when a flying club air plane approaches me (standing on earth), I hear the pitch of its sound gradually decreasing even before it passes over my head. The pitch is pretty lower when it is directly above me, and decreases further as it gets away. Is the reason same? (like, the plane flying so high in the sky, the angle of depression is very significant and I get only the cos component of the doppler-increased frequency? And, the angle increases more and more as it approaches and cos(angle) gets gradually lower and lower ?
Neil did you New Zealand is celebrating Matariki (Pleiades star cluster) this Friday? New Zealand's first time to have a public holiday for a indigenous festival.
If an object reflects red light could you run fast enough at that object to make it appear a different color on the visible spectrum due to the doppler effect?
I have an idea of how to mess with science students, although I lack the technical skill to create it. A siren on a train that will pass through a station or a level crossing - but that siren is set in such a way that it plays a lower pitch as it approaches and then, at a touch of a button, the pitch raises as it passes the observer and when it has passed, it would sound like a single tone due to Doppler. There would eventually be someone who was showing off to their friends or kids who would say, "Here, listen to this train!" & comedy would occur! 💚🐇🐴💚
Since the observer isn't on the railroad track, the doppler effect isn't uniform during the period of approach or during the period of receding. The doppler effect will cause the frequency to change during both these periods. You'd have to have an extremely fine-tuned variation in frequency to always offset the doppler effect that you expect the students to observe.
@@BunnyKins1970 You'd probably only be able to do it with one student at a time. A group of students would all have slightly different points at which the train passes them, and would hear slightly different pitch profiles of the varied initial pitch being out of sync with the doppler shift. Only one student would be in the sweet spot where they'd hear a continuous single frequency. I'd be interested in hearing this worked out in practice. It would sound so unnatural, hearing only the volume change with the train's position relative to the observer.
Ok!!! Who else saw this and remembered Sheldon from the Big Bang Theory dressed up as the Doppler effect for Penny's Halloween party!!!! "NEEEEYYOOOOWW!!"
By radar gun are you referring to the laser gun? Cause the radar one they can use while driving but the laser one they have to be stopped or it won't be accurate.
A little adult joke : A guy was on a moving train with a basketful of apples on his head. Someone said please put this basket down. The train is moving. 💕. Red Pill. Matrix Crew. Trinity and Neo.
The episode where he dressed as the Doppler Effect for Halloween and no one knew what he was, even with the sound effect. ua-cam.com/video/0rJPvGML9A0/v-deo.html
If you happen to be ON that moving train, the pitch of RR crossing bells will rise and fall. Doppler shift was very obvious hearing the Blue Angels' jet engines scream when approaching, then rumble as they pass and move away at near 700 MPH.
NYEEEOOOWW
Aha! ive seen another dark verson of that meme. with a plane and uh, lets just say its a set of skyskrapers
So does this hold up with Speedy Gonzales and the Roadrunner? Don’t think the coyote gets the same effect as he’s interrupted by midair followed by a crash!
Someone else asked the question, does the Doppler effect work in water? Like, the sonar returns of a submarine?
Fabulous impersonation there Dr Tyson!
Can you please tell him to explain all this stuff on a peace of paper please? Because when he speaks that way it is not clear in my mind
A friend of mine said he understood the Doppler Effect perfectly. He changed his tune when I told him to run it past me.
Im a little upset that this is the first time hearing this joke
🙄
Nice one
😂
@@KiingDa3rd I apologise for not making it up sooner! I'll do better before the next time!
I have a lot of respect for Chuck. He’s brings a perfect mix of comedy and continuity, he’s able to make things relatable and entertaining for us. It’s not an easy job to be able to grasp all the concepts he does and then turn them into timely jokes that are actually funny
Well said!
Perfect ting and yang , makes it’s easy to understand
Agreed
@@Frogingscope A bit correction. Yin and Yang.
You, pretty much saying: he's actually funny. I think everyone knew. He's definitely great at his job. Thank you for your comedy Lord Chuck.
What do we want? Neil imitating the Doppler effect!
When do we want it? NYEEEOOOWW!
Excellent.
This channel never disappoints!
We’re flattered!
100% Agree ❗️
As soon Dr. Neil made the doppler sound effect with his voice, i looked at Chuck's face and it was like we knew both what to say "The MEME". AHAHA
Always an excellent scientific educator Dr. Neil is.
I love how he doesn't care about popularity it's more of education and still standing strong to his beliefs.. My favorite teacher and role model to all the youth that he can reach 💜
My ears heard this when I was a child but I could not have explained it till now.
Listened from the side of a freeway when cars were travelling past at high speeds. I waited a long time for that explanation.
Thank you!
My brothers made that sound frequently.
He can also speak in Donald Duck.
Wow! Tell him to tell Donald we said hi!
This was great. I knew about the Doppler effect, and I was curious if it had a effect on light waves. Neil described it perfectly. I was also curious about red shift and blue shift, and now I know. Thank you so much for this video, it exceeded my expectations.
True for waves.
So if sun suddenly started to "fly" towards us, would it change colours? (If its some speed but not a speed of light)? From white as it is to... blue? :) etc..!
So glad it was of value to you!
@@MrRichieHK I imagine it would slightly, I would think it's too close for a blue shift to really take effect before other thing got really weird and catastrophic
@@StarTalk that's what I love about you Neil, you want to be famous, but not for personal gain. But to advance scientific thought in everyone you reach. For that I applaud you. I'm a blue collar worker who has always had an interest in astronomy since I was a kid. You have shown me more about the universe and astrophysics than I would have ever figured out on my own. I'm even getting into quantum physics, and picking apart relativity. All I have is a highschool education, but with your help, I know there is no limit to what we can know
You two are as entertaining as the car talk guys were, and the names of your shows rhyme. Coincidence? No matter, I love this show and learn so much while cracking up laughing right along with you!
Good point! I loved Car Talk as well.
I was thinking about this for the first time in years today, and boom there's a video about it in my feed. Perfect timing.
The algorithm knows ALL!
Hi Neil,
Have you ever done a Startalk about the reason that we can see the sun and a less than full moon at the same time? Someone recently asked me about this, and while I think I understand the situation, I could not adequately explain it.
Thanks for keeping us educated.
I’m sure I saw that in a vsauce video! I think it’s called the moon terminator illusion 🤔
ua-cam.com/video/AQ5vty8f9Xc/v-deo.html
Crash course astronomy, highly recommend
@@eugenio1203 yup. The terminator line is the line between daylight and night, especially on celestial bodies with no atmosphere to blur that line
I always wonder who taught Neil, how he learned how to teach in such a entertaining way.
Carl Sagan
@@kairKash funny actually, when i posted this I immediately looked it up. I see where he gets it!
@@HopDavid Nevertheless he's often said he looked up to Sagan as an inspiration.
I don't know by who, but man... was he a good teacher.
@@fiusionmaster3241 time to look up who influenced Carl Sagan haha
Been fun learning from you all my life
Thank you !
The pleasure has been ours.
Never in my dreams could I have imagined I could reach out like this as a kid watching; now with technology it’s possible absolutely stunning to me
Astronomy was my first choice as a carrier in fifth grade well sorta reached it by writing a book about The sun lol
Solar Independent Utility Systems Manual
Never reached anyone yet but maybe with this technology I can overcome this as well !
Btw how are you liking the new photos from the new Webb telescope
I seen the very first images they released; absolutely mind blowing awesomeness and sharing everything with my family as they appear
But again thank you for all the knowledge as it really opened my brain to the universe and went on to utilize its photons lol
Very best wishes to you !
Now we need an explainer video about the vector principle!
crest crunch and crest stretch are insights that only Lord Chuck could make.
I'm gonna steal this
Thanks for another video!!
Thanks for commenting!
🎯Thanks for help making the next generation of Black nerds look cool.👍🏿
💡Please interview Lonnie Johnson, the scientist, inventor and researcher working on next gen batteries.💦🔫
That’s an excellent idea! Thanks for the suggestion.
Good stuff. Thank you. Dr. Tyson, you are so good at explaining things. Chuck, thanks for the questions, rephrasing and the laughter. 😊
No
this was probably one of the all time greatest explainer videos from star talk in my opinion>
Me: "Oh I know what the Doppler effect is. I don't need to watch this...."
Also me: **watching with fascination because StarTalk 'splainers are the best**
😻
The problem with "I know this" is more often than not, you really don't... I don't mean you, I include myself but I'm not posh enough to use "one knows".
Given an object emitting a sounds at frequency x, moving a velocity v, heading in the direction v, situated at vector p relative to you. Can you predict the sound frequency change for you? Only if you can do that do you understand the Doppler Effect.
Science is hard and bridging the gap between an ad hoc understanding and actual science is surprisingly enlightening and definitely worth the effort.
@@davidmurphy563 Yes! I can predict the sound! It goes NYEEEOOOWW!
Another awesome, ROFL and educational StarTalk episode! :D
Glad to hear it :)
That's why a tornado signature shows different colours touching since it measures the wind going away from you and toward you, showing circulation.
Thank you Dr. Tyson and Chuck! Fun as usual 🤗
Glad you enjoyed it!
We learned about the Doppler effect, red shift, blue shift etc. in science class, but it's super interesting to hear how Neil explains it.
It would be nice if you added visuals to explain some of the concepts covered in this series.
Thank you for your feedback!
I love your voice Neil I could sit and listen to it all day
I have the NYEEEOOWWW as my ringtone for text messages.
Love it!
Hello, another video on time dilation would be amazing :)
Or you could just watch this one and change the playback speed to 0.25
I'm currently obsessed with time dilation and light cones
they need more time
It was one of the first things I noticed at the racetrack when I was a young kid and my parents were on the nhra circuit
NNNNNNYYYYEEEEEEOOOOOOOOWWWWW!!!! YOU GUYS TOGETHER ON STAR TALK IS PURE EPICNESS!!!
The coincidence of listening to this episode while driving a Freightliner Cascadia with driver assistance features like the exact distance a car is, and how fast they are going was truly a lovely experience 😆👍
The cause of the Dopler Effect is that sound travels at the same speed though a given medium, no matter how fast the source of the sound is moving. The speed of the source adds or decreases energy to the wave and since the wave cannot increase in speed, the energy change is seen in the change of frequency.
Red shift is not cause by the distance changing due to expansion. Red shift is cause by the speed of the source, gravity and the medium that the light travels in.
The higher pitch is easier to amplifie. It’s from the resonance of the motor the whole train is essentially a resonator box. Like a tornado whistles. The low end frequency comes later. Or the natural sound of the train. I learned Doppler effect from state troopers in grade school and the radar gun.
This is not true at all your not hearing amplitude or a amplifier. Sound waves moves in a 360 degrees and each wave then also will Absorb, reflect, rarefaction etc and move in another 360 degrees. what you are confusing is sound presence with amplitude. Sound doesn’t have to be amplified to hear it. Sound waves are just sound pressure which creates it own air mass so it’s pressure that builds up in your ears. Something being higher or lower doesn’t make amplitude easier or harder it just gives you a greater presence. Which is considered loudness
This channel is always feeding my curiosity.
Amazing work!
Greetings from Brazil 🇧🇷
Top marks Chuck. As a lay person you always stay close to the information. A real science appreciater
So RAM (radar absorbent material) used by the military, tends to be an iron silicate suspended in a bonding agent. Besides being expensive to get it also adds a lot of weight to the objects coated with it.
I love when chuck says. You got some splaining to do !
I knew that that sound neil makes will be in this explainer
This phenomenon is also observable if you see a duck swimming in a pond. Every time the duck paddles its feet, it sends a wave outward. And because the duck is moving in a direction, you will see that the waves in front of the duck are closer to each other than behind the duck
Wow!
I LOVE this show so much, and always learn something!! Thank you!!!
We’re so glad :)
Everyone should should learn something new every day, if it's getting late and you haven't yet hit star talk before you sleep!🤓
Agreed!
Neil's thoughts are so profound they create the doppler effect when they pass.
This was excellent. Great explanation.
Love you Chuck
Hi you guys 🤗
It was interesting to hear about the Redshift...,, 😉 I won't be here when the 2 Galaxys collide to see it go blue, but, it's nice to know that it will happen as you say. Now, I noticed you missed one little segment about the Doppler Effect or your "Dopplershift" if you are inside that car an the sounds you hear will always remain the same until it slows down to come to a stop or it changes speed to go a bit faster. You didn't address that part 🤔 Why not? It's important to know also 😌
Love these with you so, so much young man, thanks!
Yes 👍 Chuck is back!!!
Hey chuck and Neil can you do a video clip about you personal take on the tv series “The Orville” and aside from the main comedic side of the show did they capture any real representation of what space travel could be like?
I'm having trouble with the physics here, as applied to light. NDT says the doppler affect is due to speed (only, I think). Beginning around 6:32 and specifically around 6:50 he says that light traveling away from us (slower) will be redshifted and light traveling towards us (faster) will be blued shifted. I understand (and was taught in college) that the speed of light is the same for all observers. It always travels at the speed of light (in a vacuum, like space). So if the Doppler effect in light is not due to changes in the speed of the light, what is it caused by? How does the light continue its speed, as a constant, and yet, present us with different color frequencies as we observe it? Thanks for any responses.
“The Final Theory: Rethinking Our Scientific Legacy “, Mark McCutcheon for proper physics including light. Doppler applies to sound not light as you surmise: light is a cluster of expanding electrons, particles not a ‘wave.’
@@davidrandell2224 Thanks so much.
light cannot be travelling slower or faster away from you, have you not heard of special relativity ?
redshift means the light beam is losing energy in respect to your position
redshift and blue shift are totally relative to the observer meaning one observer is looking at a light beam while measuring a redshift for this light beam meanwhile another observer is looking at the exactly same light beam and is measuring blue shift for this light beam
energy loss or energy gain for light is totally relative to the observer, and light cannot be traveling faster or slower as the speed of light is
you travel at 1 mph and you measure the speed for light to be exactly 100% of c, you travel at 99,999999% of c and you measure the speed for light to be exactly 100% of c meaning it doesn't matter how fast you are moving because light is always moving at 100% of c in respect to you, this is because you are always stationary in respect to light
this means the only true motion that there is is the speed of light
however at the speed of light there is no motion at all
@@kokolame4704 Thanks so much for your reply. My question was (and is) since the speed of light is the same for all observers, how is it that there is redshift and blueshift? Since light speed is constant, how and why is it 'losing energy'? Your answer seems to be that light is losing energy due to my movement, which I gather from your comment is not 'true movement'. Focusing on your last sentence, if the only true motion is the speed of light, and if, at the speed of light there is no motion at all, then it seems to me that the emitted frequency of light from the light source should also be a constant and that it should not lose energy, particularly if there is no movement. No?
@@stevendixon1339 light is not loosing any energy, it's just the oscillation between the magnetic and electric field that has a longer and longer aplitude once it is traveing from you away
in other other words
light that is travelling towards you is blue shifted FOR YOU
light that is travelling from you away is red shifted FOR YOU
so yes, the amplitude of wavelenght of light is RELATIVE TO THE OBSERVER
now, let's take it to another level
let's say a galaxy is in a vacuum of space that is accelerating faster and faster in respect to your position [the vacuum is accelerating, not the galaxies themselves but the galaxies are in the vacuum so they are accelerating indirectly since the vacuum is accelerating,
[think of a sheet paper where is drawn a picture, now imagine you start dragging the sheet of paper - the sheet of paper is accelerating physically not the picture on that paper however the picture is depicted on that paper then it is indirectly moving as well
the vacuum is the sheet of paper, the galaxy is the picture]
at time interval X you are measuring the light that is coming out of a galaxy towards yourself, you are measuring a certain wavelenght of light
at time interval X + 10 months you are again measuring the very same galaxy, and you are finding out the light of this galaxy has a longer amplitude [it got red shifted in respect to your prior measurement] than before, you are getting the vacuum in which the galaxy is, is expanding from your position away thus taking the galaxy with itself, too
this is how we have got the space between the galaxies is expanding, and the hubble telescope then shockingly revelead the expansion is accelerating
so, if light "looses or getting energy" it travels at the speed of light anyway, the "energy loss or gain" is relative to the observer only
love the show. lotso love from South Africa
And now you now how to fight a speeding ticket in court. Another very interesting video.
LOL!!! Chuck's face when Neil was making the car noises🤣🤣🤣 Tell Neil youv'e got to get down and walk along against the fence at the NASCR race to experience it. You've got to be sneaky though to time it right, and don't linger 'cuz they'll yell at you... been there, done that!
Yess we have 1 master formulae..
+- up +- down....
Loved the derivations😀😀
5:51 , I think it's time to introduce NEIL to FORMULA 1. He's be so excited with the SOUND of the cars. 🤩
Standing right next to the track at Michigan International Speedway, the doppler effect is astonishing. Also one's eyes cannot focus on an object passing at 200+ MPH.
The man just breaks down the complicated. I wish he thought 💭 me Physics in College,.. Seriously
One of my favorite episodes of The Big bang theory is when Sheldon dresses up as the Doppler effect for Halloween
Lol. Same
We know the Doppler Effect. We are here to see the Tyson-Chuck effect. Love this show. 💕Red Pill. Matrix Crew. Trinity and Neo
has anyone measured the energy supplied by light to space? does light provide any form of energy in space?
Off course, light is made of photons..
Photons are very energetic so...
And off course it has been and can always measured, actually the project "breaktrough starshot" even plans to launch interstellar light sails and use just laser light as a propelant
“The Final Theory: Rethinking Our Scientific Legacy “, Mark McCutcheon for light and proper physics.
Neil, pls explain beacon of maracaibo. I'm from Indonesia and I'm a big fan of yours.
And chuck. Not forgetting you man.
Neil at the NASCARS:
Spectating fan: * wearing backwards trucker hat, aggressively eating a corndog *
Neil in next seat: "did you know there are microphones all around the track picking up the sounds of the racecars?"
fan: "oh hey! youre the guy from that signpost meme! that was so funny man!"
That was really good fellows.
So if you paint a spaceship blue and have it come directly at you really fast, it becomes invisible?
I was about to comment about the meme, then Chuck brought it up
I would love to see an explainer on how nmri works, there are many videos on UA-cam but i still don't get it
In Japan every car's speedometer is set to show an 8% higher speed than your actual one and the police never stops you unless you go 20+Km over the posted speed limit.
So, if you get a ticket you know for sure you were actually speeding.
THIS… IS… SP…..STARTALK
That NYEEEOOOWW is iconic
Thanks, Neil Tyson.
Jimi Hendrix utilizes the doppler effect in his famous Star Spangled Banner performance at Woodstock, where he emulates ambulance sirens. He unbends the strings while hammering with his fingers on the neck of the guitar back and forth, which bends the familiar siren notes down as happens in the Doppler effect. I think he also emulates it when he does the sound of bombs falling from the sky.
Sheldon cooper wore a doppler effect costume in one of the TBBT episodes imitating the sound "Nyeeeoowww!" several times.
Does the Doppler effect work under water?
Surely it must. We see the effect of the doppler effect on surface waves for a disturbance on the surface, but since water is a medium just like air, it makes sense that it would occur. But then, water is essentially treated as incompressible. I would love to hear Neil weigh in on this question.
I found this in the Wiki page on Sonar - but it didn't elaborate
"Particularly when single frequency transmissions are used, the Doppler effect can be used to measure the radial speed of a target. The difference in frequency between the transmitted and received signal is measured and converted into a velocity. Since Doppler shifts can be introduced by either receiver or target motion, allowance has to be made for the radial speed of the searching platform. "
@@iamdb1990 Wrong. Anyone who's ever been under water can tell you that sound travels under water. How do you think sonar works on submarines? Or the echolocation ability of cetaceans?
yeah It works the same way
@@iamdb1990 Doppler effect is for any kind of wave as its heavily related to frequency
Hey Chuck, if I’m not mistaken, the clip-clop sound is also part of the Doppler effect. Please ask Mr. Neil D T if this is the case. Thanks
1:05 "...so,"
Interesting 🧐
What about a radar gun being used while it's raining? Do rain drops effect readings from the radar gun?
Ok so here is my story.
I got a ticket for speeding through a road on which there were men at work. Here in Italy on regular roads the limit for that specific circumstance is 30Kmh. If you are going faster than 40kmh the speed limit, your license gets revoked. Considering that they give you 5kmh bonus to compensate inaccuraccy of your car that limit would have been 75Kmh, at 76 my license would have been taken from me on the spot. I got exactly 75. Now that I know I was going faster then what the gun registered I feel even more lucky than I felt before. Definitely too close for comfort.
We use the doppler effect in locating hidden transmitters.
3:54 kkkkk
Lol 2nd…sound waves compress as they get closer (higher pitch) and decompress as they go further away (lower pitch). It’s essential knowledge as a sound and music composer in my world!
Well, if the emitter of sound waves get closer, not the sound waves themselves.
@@homewall744 Yep, exactly-don’t want to get anyone up in arms-so, as the sound source gets closer! Lol
Why the shorter videos lately? I wanna learn.
🔥🔥🔥
8:45 "When they are off to the side of the road, not all of your car's motion is towards the radar gun; only some of it". I used to notice that when a flying club air plane approaches me (standing on earth), I hear the pitch of its sound gradually decreasing even before it passes over my head. The pitch is pretty lower when it is directly above me, and decreases further as it gets away. Is the reason same? (like, the plane flying so high in the sky, the angle of depression is very significant and I get only the cos component of the doppler-increased frequency? And, the angle increases more and more as it approaches and cos(angle) gets gradually lower and lower ?
Niel not even knowing he made a wonderful meme sound
neil isn't the smartest man ever but I like to listen to his voice, it is gradually putting me in sleep
Neil did you New Zealand is celebrating Matariki (Pleiades star cluster) this Friday? New Zealand's first time to have a public holiday for a indigenous festival.
Chuck is too damn smart. 90% of these theories and idea goes over my head lol
This is how every influencer channel should be.
If an object reflects red light could you run fast enough at that object to make it appear a different color on the visible spectrum due to the doppler effect?
Yes
I have an idea of how to mess with science students, although I lack the technical skill to create it.
A siren on a train that will pass through a station or a level crossing - but that siren is set in such a way that it plays a lower pitch as it approaches and then, at a touch of a button, the pitch raises as it passes the observer and when it has passed, it would sound like a single tone due to Doppler.
There would eventually be someone who was showing off to their friends or kids who would say, "Here, listen to this train!" & comedy would occur!
💚🐇🐴💚
Since the observer isn't on the railroad track, the doppler effect isn't uniform during the period of approach or during the period of receding. The doppler effect will cause the frequency to change during both these periods. You'd have to have an extremely fine-tuned variation in frequency to always offset the doppler effect that you expect the students to observe.
@@carultch Yeah, that. Like I said, I lack the technical ability to work out the details as to how to achieve it. 😁
💚🐇🐴💚
@@BunnyKins1970 You'd probably only be able to do it with one student at a time. A group of students would all have slightly different points at which the train passes them, and would hear slightly different pitch profiles of the varied initial pitch being out of sync with the doppler shift. Only one student would be in the sweet spot where they'd hear a continuous single frequency.
I'd be interested in hearing this worked out in practice. It would sound so unnatural, hearing only the volume change with the train's position relative to the observer.
Best Halloween costume
Excellent. I want to see the meme. Please add the link
Never realized this is the reason why it sounds like that!! and thanks for telling me I only have 5 billion years left to live!
Ok!!! Who else saw this and remembered Sheldon from the Big Bang Theory dressed up as the Doppler effect for Penny's Halloween party!!!! "NEEEEYYOOOOWW!!"
same
By radar gun are you referring to the laser gun? Cause the radar one they can use while driving but the laser one they have to be stopped or it won't be accurate.
A little adult joke : A guy was on a moving train with a basketful of apples on his head. Someone said please put this basket down. The train is moving. 💕. Red Pill. Matrix Crew. Trinity and Neo.
Well this is funny, i just knew the Doppler Effect because of Sheldon in the The Big Bang Theory series. xD
The episode where he dressed as the Doppler Effect for Halloween and no one knew what he was, even with the sound effect. ua-cam.com/video/0rJPvGML9A0/v-deo.html
He must have practiced that car passing Sound for decades
If you happen to be ON that moving train, the pitch of RR crossing bells will rise and fall.
Doppler shift was very obvious hearing the Blue Angels' jet engines scream when approaching, then rumble as they pass and move away at near 700 MPH.
Teacher: What is Doppler's effect?
Me: NYEEEOOOWW!