Knocking Electrons With Light-The Photoelectric Effect
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- Опубліковано 22 тра 2024
- I show you the photoelectric effect with two different methods
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the electrons must be traumatized after bumping into all of those photons
i dont think electrons can get traumatized because you need neurons for this. maybe there are small neurons inside an electron but im not sure.
@@googelman but what if they really get traumatized and we just don't know it. poor little electrons :/
What if electrons are small planets with living creatures on them? They all get traumatized.
Quantum physics are so broken from our laws that anything can happen we just dont have tye technology to find it out
Then you're just a terrible person. Your brain is constantly humiliating billions electrons 😢. And you just humiliated few hundreds while reading this.
What I like about this channel is that he is quite frugal when it comes to explaining complex things. The low production budget makes it more interesting.
Like when he built an entire room and purchased enough extremely expensive paint to paint it twice?
@@notquiteordinary Yes.
put another way, the best practical mentor's stip away the complicated by design elitistic lexicon's ,shows you the end results, then takes you through 'the back to basics' core building blocks reconstruction
totally agree. working class content 💪
@@paulmaydaynight9925 imo, that's one of the things missing in a lot of schools. Mixing theoretical and practical makes the courses easier to digest and more fun tbh.
Being a JEE Aspirant, I learnt this recently but never knew how exactly it worked.
Being a NEET Aspirant, i learnt this recently but never knew how exactly it worked.
Same bro
kya hua bhaiya.... nit iit kuch mila kya 😭😭😭
@@davidgarrett4327 paganini in the house
Being a Bangladeshi Engineering Aspirant, I learnt this recently but never knew how exactly it worked.
Note when he means extra protons, he means that electrons had left the surface.
5:40 hes gonna "knock" these positive charges off but they're too large so it's much harder 0.o
@@nicename6258 at 6:00 he also says that charges from his hand will move back to the surface. He never wanted to knock off the protons from there, he wanted to move the charges from his hand...
@@yashdiniz he meant it's much easier for the negative charge to move to the surface than knocking the positive charges off
OK got it
i don't think he's doing it right, he should wrap the uvc light bulb in tinfoil so no light can shine through and try the same. If it still has the same effect you are just watching the light bulb electric field effect
That´s exactly how a laser printer works:
A drum is negatively charged, then a laser (or a LED bar) kicks out electrons off this drum corresponding to the printing pattern, toner is beeing released and attracted by the charge, forming a physical image on the drum, then the toner is rolled out onto the positively charged paper and finally cooked in with heat by another drum. The hairy wires at the printer´s ass discharge the paper to ground, so it won´t get sticky. That easy :)
Thanks for sharing this!
Wow. That's awesome! I never really understood how they worked. Thanks a lot!
Knew it.
:O thanks so much! Although I knew laser drum is charged or discharged using laser, but only now it finally makes sense. Hairy wires at the printer's ass rofl!
Dope
Its impossible to say anything bad about this guy. Hes just so smart and wholesome
Unless u hate science
The only thing is some of his thumbnails but otherwise he’s good
Nerd?
His eyes are so close together it's weird. Once you see it you can't unsee.
@@trucid2 i dont think we should judge this guy by the amount of centimeters between his eyes. Hes made it clear at this point that we should judge him from whats inside, and from my perspective this guy is extremely clever and a nice person
I've only recently discovered your videos. Great stuff! Now I'm going to have to look through you're previous videos to see what I've been missing! Keep up the good work. Much appreciated!
Wow! I've watched literally dozens of UA-cam videos, TV documentaries and read multiple articles trying to get my head around the "wave-particle duality of light" thing and, even though I know that wasn't the central theme of this video, at the end you nailed it better than any presentation of it I've seen before. The key was differentiating the high frequency vs the lower frequency of the EMS in terms of particle & wave tendencies. Seriously insightful & helpful.
I really like how he explains these super complex phenomenons in a way that simplifies it down to easy-to-understand terms. The practical way of showing it definitely helps as well.
This video literally deserves 100x+ more views than it has
This guy teaches more physics than schools
Yes
Only difference is schools teaches theory, he shows us practically
pay attention in class
Bro this topic is in high school physical chemistry syllabus
@@literallyafuckingspoon8801 Okay I’ll pay attention to inappropriate fish parts
*so useful*
I'd like to give Thanks to James for showing us educational videos with layman's terms. I've always been interested in science but never to a course in school. As a 33 year old man still learning things new everyday , they are quick and simple and easy to understand. Thank you so much for your time and effort James ! You da Man!
I like how you don't spoon feed us with animations. You actually give us a demonstration. Thank you for putting so much of effort into what you do ❤️
I like animations but alot of them are decieving,some of them manipulate me into thinking I understand but in reality I never understood but my curiosity has been satisfied,but yhen I sit to replicate the thing and find loopholes and it makes me demotivated and restless
The positive charges are electron "holes" instead of protons. The protons are always in the core and do not move.
So touching the plate with the positively charged rod actually drains the electrons from the plate to balance out the charges, leaving a net + charge on the plate.
thank you. i thought that part was off
Indeed, I was surprised he got this wrong. In these kinds of static electricity experiments, it's always electron movement.
Was gonna ask this
I think he is still right because he didn't mention transferring protons, he only mentions "extra protons on the plate". Which is true because generally the plate will be neutral and electrons and protons will be equal in number. But by stripping away the electrons, we will have extra protons on the plate which are unbalanced. So he mentions only flow of positive charge and not protons.
That’s not correct. “Electron holes” in physics refers to positrons (anti matter),…. which is no where in this experiment.
Great practical explanation of the "quantum bounce"
Remember always wear eye and skin protection if your in the same room with a functional UV-C light source.
or it will blow your mind away
oops I meant electrons away*
@@acrinacrin6925 "Welder's eye" is not a joke...
@@sleeptyper well not if it isnt a dark joke... but if you can make it funny...
then it can become-
Yeah, it surprised that he uses it without any protection. That thing can give cancer 😅☠️
@@acrinacrin6925 im sorry about the inconvenience, let me mention that your joke is indeed very funny
That was the first time, in all the years I've been into this that a particle was explained this way. GREAT JOB! 👍👍
thanks a lot i was so frustrated at this since months, this is a topic of chemistry in my syllabus and no teacher was actually going into the details and so even sometimes in the live demonstrations i barely get anything but i am just so happy for the first time i got something thank u!
I love Him.., he's the Best Chemistry and Physics Teacher Anyone Can Have...😃
Facts I learned a lot from him and I don't get tired of him I watch every one of his vids ever since the first time I subbed to him
This topic comes in chemistry bro
Only science interested people watch his videos
@@kahe7436 actually I wasn't really interested in science when I started watching him before I subbed but as time went my I'm like lemmi just sub and now I watch his videos and I'm interested in these new physics and science stuff it's really cool
Weirdly I love his videos too. I think his voice is super annoying but I can't stop watching his videos lol there's something interesting about the way he delivers things, despite his annoying, cheese grating voice
This fractured my brain. And I have no regrets. Lol. Especially at the end where he answered a question I pondered for so long without finding a way to articulate it, regarding radio waves and ultraviolet particles. Of course this is generating a flurry of new questions. 🤔🤔
Love when that happens. The questions never stop, but that's the fun part. Hopefully you now have a bit more clarity to tackle life with :)
Dear Corrado, what is happening in this experiment is somewhat similar to mechanical experiment to rolling beads up an height without enough kinetic energy to overcome this height. No matter what the number of the beads that you are rolling up the height without sufficient energy are, none of them will be able to make it throught the height and detected at the other side of the height unless at least one of them has the enough kinetic energy to overcome this height.
well at least it now has a crease from that fracture
You beat me to it :). That same question has sort of bothered me for years.
U made it so easy dude , i subscribed to ur channel 2 years ago and i see u r improving day by day with more experiments and their explanation theoretically
Great work
This is the best video on the internet regarding the relationship between the photoelectric effect and positive/negative charge. Thank you. I learned something.
This is a science fair winner if I ever saw one.
This was a noble prize winner
@@quartarkpersonal By the loopy genius himself
wait he actually mentioned Einstein in it mb. (ofc he did I am stupid)
Fantastic presentation! This is the first experiment I've seen showing how you can differentiate between positive and electric charge buildup and makes the connection about how they must have determined what interacts with it (light), besides other charge.
That is what Benjamin Franklin did back in 1775 or thereabouts. Unfortunately his choice of terms for positive and negative were called the wrong way around as later the discovery of the electron, which carries the flow of current, was negative!
@@karhukivi it isnt the "wrong way around".
what is "negative" but an arbitrary term to describe a phenomenon? it could just have easily been called male and female. or black and white. or anything, simply to define two opposites, give them a name.
are electrons bad? no? well, are protons bad then? because isnt negative also a synonym for "bad"? so which are teh "good, positive" ones?
see? negative. positive. just words. no direction.
oh, you mean the "conventional" versus "true" current flow?
@@paradiselost9946 Perhaps in literature and the arts "negative" means something undesirable, but not in maths or science. Black and white and male and female were already being used in science. Electrical connectors are still called male and female. In Franklin's day they did talk about silk and wool charges, when static electricity was being studied, but thankfully that terminology didn't last!
This channel is great. After 30 years, I eventually understood the reason why I had to put my EEPROM with quartz window below UV light to erase it before programming again. Thank you so much!
Oh wow, what an amazing physics experiment demonstration!
I was looking for something like this for ages!
In case you ever wondered, this is in a nutshell how plants make use out of sunlight. Amazing.
Photosynthesis.
@@westonding8953 wow you know big words
@@virtualguy2702 Yep. Lol. Actually, I am curious to know whether it is possible for humans to duplicate the process more efficiently.
@@westonding8953 wait now I’m curious
@@virtualguy2702 It's a pretty complicated process (as expected.) It also demonstrates Einstein's mass energy equivalence.
I just turned in a paper on Albert Einstein yesterday!!
This effect was one of the sections I included, because of his paper in 1905. How crazy.
Crazy is paying off student loans while information on UA-cam is better than the university teachers.
@@unitedspacepirates9075 my professor is awesome thankfully. It's actually a class on physics in science fiction. Pretty cool
🍀goodluck 🤞🏼🤞🏼
@red dunkey but it’s a start 😉😘
Dude, you are amazing. I love your channel! I started watching your channel because of the vacuum chamber thing, but since, I have learnt a lot of other things from you. Thank you!
Incredible demonstration! I’ve never been able to visualise the photoelectric effect so well. Thank you
I think generally a good goal is to try and not remove or add protons to atoms, that is called nuclear fission or fusion and is generally not a good thing to do near humans
Ik right? If protons are moving (not "transforming" thats another story) its probably Alpha decay, where two protons( along with two neutros) are ejected (yeeted away) from the nucleus, and it doesnt need fusion or fission to happen, and alpha particles cant penetrate the human skin. But still, it has nothing to do with the photoelectic effect.
The positive charge is actually caused by "holes" in the electron shell, meaning, a place where there should be an electron, but there isnt one. That "non-particle" cant be hit by photons, and therefore cant be knocked off by light, since it cant *create electrons out of nowhere*
Don't worry, you won't do that with UV light or even gamma rays. The particles in the nucleus (protons, neutrons) are held by very strong forces, much larger than that which holds the orbital electrons, as demonstrated in this video.
This video taught me more than my high school teachers did ..It could be explained so simply but still schools dont and just keep us theoritising things
That was the most wonderfully clean, human, and understandable description of the particle wave duality. And the behavior of electrons, and many other details of particle physics, that I've ever heard. Wow! Wonderfully done sir!
Thank you for this amazing, time-saving demonstration, and for all the time, toil, and treasure you put into making these videos. Can do a lot of good with them, they're great!
I shared this excitingly to my physics teacher... Unfortunately, he read the comments.. I wonder what my grades would be now🤔
Hopefully your teacher also explained the dangers of playing with a UVC light too! Don't do it!
What's the issue with comments
@HyperNova lol
@HyperNova Lol
@HyperNova lol
I never knew that low frequency radio waves can’t be detected as a particle. That’s really interesting.
@LunaticProgressMaker LOL! But if you weren't joking: a soundwave is a pressure wave, as in compressed air that travels the room from the instrument (the bass) into your ear, and makes your eardrum vibrate at that same frequency. A radio wave is an electromagnetic wave and can't be heard.
I'm curious, if that's the case, is the opposite true? High frequency gamma waves can't be detected as a wave?
@@robertrobinson1454 I think so yes - cosmic rays
this is the coolest experiment I have seen in, probably my whole life.
You said something that finally cleared up some confusion for me. All the time when others spoke of light as a particle, as photons, I imagined it as a discrete particle but the way you describe it, as a very short wavelength of electromagnetic energy makes more sense to me, just as a burst of high frequency pulses from a radar transmitter are represented by pulses and not the interwoven cycles of the electromagnetic energy waves that make up the pulse.
As an aside, in the "old days" we used to use gas filled tubes such as your neon tube you used as a voltage regulator. Once the discharge potential caused the tube to conduct the voltage drop across the tube would remain the same regardless of the input, within certain parameters.
I literally took up the phone to study photoelectric effect but went to youtube instead and first thing I see is this video . UA-cam can read minds , it's official .
Never knew about this item’s existence!! Thanks for teaching!!!
ua-cam.com/video/mIRHMC3Zc2E/v-deo.html
Probably the best video yet. Great job!
I’m amazed with your way of explaining. Well taught! I’ll make sure my classmates see this too
“Mark Twain famously said “I have never let my schooling interfere with my education(now it is UA-cam).” Is it time to reclaim our schools?
I am reading NCERT Book about photo electric effect and you just uploaded a video ,that's awesome
hehe boi
i was also reading same🤣🤣🤣
Class 11.....?
@@YourANU yes
I love how smart and wholesome he is. Also he really simplifies it and it help my grandma understand what interests me.
This is such a fantastic demonstration, thank you!
"Because a single photon in the radio frequency... " blew me away
It is possible that the human eye can detect a single photon, according to some sources. The faint light from distant stars is a stream of a few photons per second, how's that!!
I was studying photoelectric effect for my test and suddenly this popped up wow
ua-cam.com/video/mIRHMC3Zc2E/v-deo.html
good luck with your test mate
Is your test on 11?
Good luck friend
@@ebrocoliphoto ua-cam.com/video/mIRHMC3Zc2E/v-deo.html
Such great teaching videos! Thank you for all the work you put into your presentations. They are the best.
Ive heard the wave/particle explanation a million times but the last 30 seconds of the video was extremely facinating because I've never heard it said like that. I kept rewinding it until I could grasp its meaning
Me starting studying modern physics for my upcoming exam
Action Lab : photoelectric effect
*Coincidence?. .*
Same he always upload vdo's that i have been just studying
THERE IS NO SUCH THING AS A COINCIDENCE. THE FACT THAT YOU’RE WATCHING THIS VIDEO MEANS YOU’RE ENERGETICALLY ALIGNED WITH ME AND THIS MESSAGE. YOUR THOUGHTS CREATE YOUR REALITY. BUT YOU ALREADY KNEW THAT. YET, YOU STILL LIVE A LIFE THAT YOU DREAD [oh, excuse me…] 👀😳 [AAGHG] 👁👄👁 THAT IS BECAUSE, WHEN YOU VISUALIZE YOUR DREAM LIFE, YOU UNCONSCIOUSLY BELIEVE THAT IT IS UNREALISTIC.
@@nanafalke 👍🏻
You should really study modern physics if you are interested and have curiosity, not just to pass for your exam.
@@anantashrestha666 tf? Right now I would study according to my exam only right? And acc to u if I don't like modern physics I shouldn't study it? 😂🤡
Literally studied this yesterday and here comes the practical 😀
Class 11?
@@abhishekgupte7578 yeah
Congratulations! You're the first person ever to offer a visual demonstration of the reality of electrons. From your hair to the balloon to the plate. I could almost see them getting transferred in their little probabilistic quantum clouds. Awesome 👍😎
Brilliant demo and explanation. Really loved the explanation of wave particle duality. Thanks for making these films.
Dude we just studied this at our school today!!!! Gr8 video btw
The topic is going on in my school thanks for sharing the same
This is absolutely excellent. Especially interesting towards the end when you discuss protocols for calling high energy (high frequency) particulate whilst low energy (low frequency radio waves) we call wavelike. This becomes important in the philosophy of science when we ask what sorts of interpretation should attribute to the background theories. Fantastic stuff. Thank you.
This man have always a whole new idea for his new videos...The explanation is also awesome...Loved it.
My school is teaching me about electricity in year 8. However, I completely understand this. Can you be my physics teacher?
It's more like particle physics, but he truly makes it easy to understand.
Drop out of school while your still young son
You can make a very simple electroscope with folded in half strip of aluminium foil, if I remember it correctly.
Beautiful 💞
There is so much more to this.
More than people might understand.
I learned something and thanks for deepening my understanding of photoelectric effect! Continue to create more contents sir. It really helps to broaden and deepen my knowledge of the lessons. God bless you!
I’ve been watching this guy for 5 years and I’d say he’s pretty damn good
This is for me, the best experiment you have done so far.
Thank you for sharing, this was very interesting to see.
(the mirror room experiment to be fair, was equal to this one. that was cool as hell.)
That was your best video yet man, keep doing what your doing.
I might just buy that kit your selling if you keep making videos like this.
I've heard about the wave/particle aspect of light for 20 years and I've never understood it in the way described here, this was really amazing. A whole new way (to me) of understanding that hard to grasp concept that actually makes some sense.
When Yt is more valuable than school
Sahi kaha
Ha saccha me
Ana saccah sahika
if you've listened more in school, would've used 'than'
Ur the type of person to not pay any attention in school and then complain about not learning anything
Also de broglie gave a nice concept for the wave particle duality
It blows my mind how intelligent this man is. Always keeps me coming back to watch move. You’re amazing, keep being you!
8:53 onward was extremely enlightening. the earlier experiment was also very interesting as a practical visual demonstration of how the universe works.
I find it totally fascinating that we can actually see the universe's physics like this with such an old-school kind of device.
So the Sun can discharge things just by looking at it angrily, nice
Yup I totally understood all of that
This was simply awesome. I would have loved to have this guy as an instructor in my modern physics & device physics courses. Thank you, sincerely.
Wow, mind blown! Really well explained and visualized.
I was studying this in my class
You have just found a way to not only test the presence of charge! You can now test whether it is positive or negative!
thank you so much for including the explanation of what we call particles, I wouldn't have thought to look it up by myself and it's very important
Thank you for this video. You do an amazing job explaining the concepts.
to put it simply, he pushed electrons off a plate using high energy light.
high frequency
@@core-experience high frequency = high energy
In my entire life I have never once satisfied with the explanation of static electricity, that is rubbing of things causes exchange of electrons.
Yeah. It raises a few questions such as where the electrons come from and where they go to (in terms of orbitals) and why they don't chemically react.
@@westonding8953 In term of orbitals they go to high orbitals where they almost free. And they come from (zurprize!) atoms!
@@xtratub We know they come from atoms but don't they create ions when they leave? Like why, when a Na atom loses an electron and gives to to a Cl atom, we get a reaction and explosion but we don't see any of that happen when you rub a balloon against your hair?
@@westonding8953 Yes, they create ions, but not too much. And this ions neutralised with other electrons in the body and eventually with electrons from the floor and earth. There are experiments in which after rubbing two body charged in opposite charges explicitly
@@xtratub Makes sense to an extent. But replace that with a glass rod and piece of silk that are not touching the ground. Why don't those small number of ions react? How do metals and other substances "hold" excess electrons? We don't see Na- too often in Chem. Why does rubber and other substances sometimes lose electrons and sometimes gain electrons? We didn't encounter that in Chemistry as much.
In Chem, it seemed like every electron was accounted for (strong exaggeration but still). With electrostatics, not so much.
I love how you can find endless amounts one content because not only our world is insanely complex but you’re also very creative:)
This is an amazing demonstration. My one little nagging point is that white light is not inherently made of red, green, and blue light. The red, green, and blue buckets are man-made constructs based on how our eyes see light. If you had been using an RGB LED array, then the argument could be made, although RGB lights often emit a sort of "smear" of wavelengths. If you look at even an RGB LED emitting white light, you won't see three distinct stripes at red, green, and blue. It will be much more blurry than that.
For example, a low-pressure sodium lamp emits yellow light. Most yellow things will appear red through a red filter and green through a green filter. Light from a low-pressure sodium lamp will appear black through both of those filters. Our eyes don't know the difference between pure yellow and red+green=yellow without an aide, but there _is_ a difference. If you had a blue laser and a low-pressure sodium lamp directing light on the same spot, in the right proportion, you might see "white". And if you looked at that light through a strict red or green filter, you'd see.... nothing. Because yellow isn't inherently red+green, either. The cones in our eyes have a broad sensitivity, which is good for seeing stuff in general, but we don't really _see_ stuff as they truly are. The universe is not bound to the RGB model of color as our eyes are.
Our eyes and ears work on similar principles. Our eyes are sensitive to different wavelengths, and our eyes have pixels. Similarly, the interface between our cochlea and our brain is based on wavelengths. The difference is that our eyes have only three very broad wavelengths (types of cones) but lots and lots of pixels (the number of cones in the retina), whereas our ears have a huge number of wavelengths (the little hairs of different lengths) and only two pixels (the number of cochlea we have). Though we get a slight boost in spacial sensitivity because we subconsciously know which ear heard a sound first, by how much time, and also because all of those weird grooves and ripples in the outer ear filter the sound in a way that helps us learn to eke out more than just the left-right dimension.
I just studied this in my class 😳
I am studying in 11th and the photoelectric effect is in my syllabus and just this popped up
Wow same
Well, well, well
Guess who's in 11th (CBSE) as well
@@Terroid who
@@Terroid James orgill the action lab host??
This is a super, well-informed explaination. Good job :D
This is just awesome man !
Loved this channel... From INDIA..🇮🇳
"Hey everyone today I'm going to show you that light is made out of small particles"
People who believe light is a wave-"triggered"
ua-cam.com/video/mIRHMC3Zc2E/v-deo.html
What if I told you that it's both wave and particle
@@suprith-science1441 Except its not, it BEHAVES as wave and particles, it doesn't necessarily imply its waves or/and particles.
@@maxwellsequation4887 see, thats arguable
It's a wave in the electromagnetic field, that is quantized as particles
Light is shit sometimes behaves as waves sometime as particle someone please give a little bit of brain to this particle
or wave or EMR
Whatever 🤦🏼♂️
I love the way he is so excited about the experiments he does.
stuff like this is exactly why this is one of my favorite science channels. you actually get to see stuff like this visualized. I have one of those bulbs though and I was told I have to use special goggles and plus it gives off ozone gas so I shouldn't be in the room with it. is that a different safer type of bulb I can get for experiments?
Light is composed of waves of oscillating particles.
ah yes ... it's *Big Brain* time
This remimds me of teslas passive cosmic generator. Only his was copper
I always love your videos sir. Thanks for explaining everything.
Great video. I've watched every episode of PBS SpaceTime and various related media and, as a non-scientist, I generally follow the concepts, but I've never heard an explanation of the wave-particle duality that was this enlightening. The part about how radio waves could be particles, but are just too low frequency to manifest in a detectable way was a novel explanation that filled in some gaps in my understanding.
i tbh gotta say. He spreads kinda much misinformation. Not saying he's dumb. But just dont believe everything they tell you. He for example explained positive charged the wronges way possible.
When he pulled out short wave UV bulb I literally thought about wearing sunglasses. Yes my brain sometimes evolve backwards for 2 seconds.
It's okay, I literally had the same thought lol.
Yes, this radiation causes cancer.. You do need protective measures when playing with such lamps.
@@BaruchNissenbaum lol I meant I thought about wearing sunglasses while watching this video.
The "holy cow" never gets old lol
Appropriate for all of you Indian viewers😁 no hate
Awesome!!! Exactly what I was looking for, thank you so much
Easily your best video!! Congrats!
Anyone from India🇮🇳 🧐
I’m from Pakistan
@@lightshadernft8156let's unite ind and pak again
Btw I know it can't happen 😂
Yess
@@Stalinchacha_ it can happen bro
It's all about the people who are brainwashed into believing that we can't be united
We have simmilar culture and were once together
Our political leaders use us as an excuse for corruption
Only if this was done when them physicists were arguing if light is a wave or a particle....
Never thought the photoelectric effect could be demonstrated in such a simple method. This guy is genius. 🔥
Such a well demonstration! Amazing! Thanks.