What is Heat? (Thermal Physics)
8:24
What is an Electric Potential ?
8:35
What is an Electromagnetic Wave?
3:41
What is Work? (High School Physics)
2:09
Пікірлер
@chephybio6911
@chephybio6911 11 сағат бұрын
"Energy is a relative concept" This line brought up a lot of questions to my mind. Well if energy is relative then the law of conservation of energy can be wrong at some places , but never heard of that . If its not wrong then It means that when we deal with systems then their energy level can be measured from any reference point , the thing that matters is the energy difference not the actual energy in the system. Well dont you think that the defination of energy you gave is not the defination of energy but the defination of the total energy contained in a body , in terms of equilibrium , like thermal equilibrium. As well as this defination also seems to be valid for only a system consisting of 2 bodies. If we want to use this type of defination for larger systems , or suppose the system consisting of the entire universe then it would require some modifications Correct me if am wrong anywhere . By the way i love your intuitive explanation on these fundamental topics. Thankyou for these explanation 🙂
@snbjornrolfblischkeoddsson5744
@snbjornrolfblischkeoddsson5744 19 сағат бұрын
This is awsome, thank you.
@AlakijarainatBukola
@AlakijarainatBukola Күн бұрын
❤😊😊
@Krishna-zo8hl
@Krishna-zo8hl 2 күн бұрын
Thank you
@Rajbirsingh-ef5mb
@Rajbirsingh-ef5mb 3 күн бұрын
Can we say that work is transfer of kinetic energy because energy of motion will increase why use only word energy instead of linetic energy
@vidhandoshi6623
@vidhandoshi6623 3 күн бұрын
Hello Sir. I am a student from India and I love your content so please don't stop uploading new videos, they help me out a lot. Also sir can you please explain the topic of force exerted by photons. Thanks a lot sir 🙏 🙂
@Summerlalhruaitluangi001
@Summerlalhruaitluangi001 3 күн бұрын
You're amazing pops!! Helped me through
@VidunJayasinghe
@VidunJayasinghe 4 күн бұрын
What does the two units coloumb and amphere mean
@PhysicsMadeEasy
@PhysicsMadeEasy 4 күн бұрын
Hello Vidun. A Coulomb is the unit of charge (like Kg is the unit of mass). An Ampere is the unit of electric current. It corresponds to the number of coulombs that flow through a surface every second .
@VidunJayasinghe
@VidunJayasinghe 4 күн бұрын
@Physics Made Easy I have a question, do a single electron movement give a current and if not why
@VidunJayasinghe
@VidunJayasinghe 4 күн бұрын
Also Charge is a property of an object but what gives that property to the electron
@PhysicsMadeEasy
@PhysicsMadeEasy 4 күн бұрын
Yes, as soon as you have a charged object moving, this will correspond to an electric current. Imagine you have a wire with one electron passing through a cross section of that wire every second, the current in the wire will be -1.6 x 10^-19 Coulomb per second, or -1.6 x 10^-19 Ampere. (The charge carried by an electron is -1.6 x 10^-19 Coulomb)
@PhysicsMadeEasy
@PhysicsMadeEasy 4 күн бұрын
@@VidunJayasinghe The universe haha! We do not know fundamentally why this or that particle carries such or such charge. We just know this by its behavior.
@asmiivarshney3380
@asmiivarshney3380 5 күн бұрын
Thank you so much ❤
@haochen6149
@haochen6149 6 күн бұрын
Hello!!! I love your point of view on explaining these physical terms, found it very helpful!! thx!! Having one interesting thought here, as you mentioned when we put a dielectric material into the capacitor, as which having a much higher permittivity (than air), it will requires more charge to be build to balance out the effect of the induced electric field. Now, as we increase the permittivity of the dielectric, more charges can be stored, to the point the permittivity is infinite (like a metal), what would happen, assuming we can have some sort of barrier to prevent the charge to go through the metal. are we creating a plasma here :)
@argentum3919
@argentum3919 6 күн бұрын
If a black body emits as much radiation as it absorbs than what is its temperature? If it's theoretically set up so that it emits everything it absorbs then his temperature should be zero Kelvin. I'm obviously not thinking of this correctly. I'm thinking of it like filling a glass of water and then emptying it. You will have zero water in it.
@sadsVSzainab
@sadsVSzainab 7 күн бұрын
طالب سادس عنده هاي التجريه فصل 4
@JesseTsegaye
@JesseTsegaye 8 күн бұрын
You are really amazing teacher for ever .
@Brainiac51
@Brainiac51 8 күн бұрын
Hello At time 5:24 you mention work also has to be done if you want to bring a mass m closer to mass M, in this case is the work done negative as the potential energy is decreasing and so is the distance between the two masses ?
@Solomon2334
@Solomon2334 8 күн бұрын
Amazing! I‘ve tried to understand the voltage so many times through other videos, but you are the best I fully understand the voltage. Thank you so much.
@user-jz8tx3vl6j
@user-jz8tx3vl6j 9 күн бұрын
You have a true gift for explaining these concepts🍎
@akshaynarasimaiah8597
@akshaynarasimaiah8597 9 күн бұрын
Nice intro lol
@Alienist391
@Alienist391 9 күн бұрын
Thank you for the lecture
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
You are warmly welcome!
@AutisticCuriosity
@AutisticCuriosity 11 күн бұрын
You didn’t describe a magnetic field is, you described its behaviour. Like saying an apple is something that falls from a tree, and threw in some obvious maths about the falling apple to give it legitimacy.
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
Hi, maybe you should watch the video more thoroughly. I clearly state what it is: it is how you see an electric field seen from an inertial frame of reference... It appears like a distinct phenomena, but it is just a facet of electric fields that emerges when considering relativistic physics. Now, please take my words with no absolute, I am using here a classical physics model... For example, in quantum mechanics, we observe the magnetic dipole moment of an electron, and we deduce from that that it is spinning (= it is a loop of current).... Chicken and the egg... Which one comes first? Watch my video on magnetic dipole moments (especially the very end part, where I discuss out of script this subject). So, you are right in a way, I cannot give you a definite, clear and absolute answer, but I can give you direction of thoughts that might trigger in you the will to participate in this fascinating quest that is Physics!
@asif530
@asif530 13 күн бұрын
Really interesting.. would be really nice to go over the derivation of plancks constant from the work function. It takes us back to the beginning of where quantum leap started
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
Actually, Plank's constant was born before Einstein was able to theorize the photoelectric effect. Originally, Plank introduce his famous constant to explain why there was no UV catastrophe when a Black Body was heated. Later, Einstein fed on this idea of a quantization constant to show that the photoelectric effect led to deduce the granularization of light. Thank you for your question :-)! It gave me an idea of subject for a future "What is" video: Plank's constant. Now I just need the time haha:-)
@bencobbold832
@bencobbold832 13 күн бұрын
I'm not sure that a pressure field can be considered a Scalar example... direction required
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
Hello Ben, Pressure at a point is a scalar quantity... Actually, if I remember right, it was Newton that realized this: The forces that act on a point and leads that point to be under pressure come from all direction. Consequently Pressure has a magnitude but no direction. You can also see it that way: on a static point, because of Newton's third law, a vectorial sum of forces is always zero, whatever the magnitude of these forces...
@markonar140
@markonar140 13 күн бұрын
I like the Representation of the Work of the Interaction with the other Atoms of the Metal Plate.. I never Thought about it like that!!! Thanks!!! 👍😁
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
Thank you for your kind feedback Mark. I am glad the visual representation I have in my mind for this phenomena opened a new angle for your understanding of it :-).
@NirajKumar-m5y4b
@NirajKumar-m5y4b 13 күн бұрын
Thank u sar aapane mujhe heat ke bare mein bataya kash Mera bhi teacher aapke jaisa hota😢😂❤
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
आपका हार्दिक स्वागत है. आपकी इस टिप्पणी के लिए धन्यवाद :-) ❤
@mahirbalayev5835
@mahirbalayev5835 13 күн бұрын
Hi, photon makes electron to leave solid surface and make material positively charged, does it mean while interaction with material that photon has negative charge and once it was absorbed and disappeared the proton become positively charged?
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
The photon doesn't carry a charge. Because the electron has left, the material becomes positively charged. So the system electron/material has gained electrical potential energy (the energy of the photon was used to separate the two). Now you just need to capture the electron with a metallic plate located above the material, connect it to the material itself with a cable, and the electron will flow back to the material through the cable: You have now an electrical current... In the end, the energy of the photon has been transformed into electrical energy. How cool is that!
@mahirbalayev5835
@mahirbalayev5835 13 күн бұрын
@@PhysicsMadeEasy i see. Just imagine, that photon has negative charge until absorption, and due to this charge electron ejected from surface, and after absorption/death of this photon this charge disappeared. Surface has become positively charged. If instead of normal matter, to choose surface of antimatter, no positron will be ejected. Or not? If photon is able to do it with antimatter also, then it has not any charge :) (most probably this opinion is wrong, but what if?) is there any observation related to antimatter?
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
@@mahirbalayev5835 Hello Mahir, No reasoning can work if you consider a photon as a charged particle. In particle physics, photons are the particles that mediate the electric force. That force is what holds matter together in regards to chemistry : All bonds are based on the electric force. If you charge the photon, physics would change drastically, and reality would be fundamentally different, following totally different rules. maybe in some universe, it is the case 😉. You other thought is interesting. You are asking, does the phototelectric effect work with antimatter?: A photon interacting with a metallic surface made of metallic antications and positron, being absorbed and leading to the ejection of a positron: I don’t see why not. Antimatter is a mirror of matter and follows the same physical laws (at 99.99%, there are a few exceptions that were observed and a yet to be understood). good questions
@rajdeepsingh26
@rajdeepsingh26 13 күн бұрын
👍🏻
@user-jz8tx3vl6j
@user-jz8tx3vl6j 13 күн бұрын
Great video!!!!❤
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Thank you :-)
@siddharthpotti203
@siddharthpotti203 14 күн бұрын
According to special relativity, when a charge moves, or a charge is seen from a moving reference, its electric field morphs into a magnetic field. My question is then, why does the electric field still exist in a moving charge - shouldnt it just have a singular magnetic field?
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Hi Sid, it doesn't morph, it appears to morph, but it is the same thing just seen from another perspective! In the past, magnetism and electricity were separated conceptually. Maxwell realized he could put them together, as two sides of the same coin. Then, Einstein explained why it could be done (relativity). Your question makes me think that you are separating electric and magnetic fields like two different things... there are the same thing just seen from different perspectives. I hope my answer helps!
@nguttam1982
@nguttam1982 14 күн бұрын
Can explain how the permanent magnets work according to Special Theory of Relativity.
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
The same way! An electron spins, left or right. An electron is also a ball of charge, so you get a loop of current... thus a magnetic field. if you have two electrons of opposite spins, they pair up and the two magnetic fields cancel. Magnetic materials are those which have a structure such as all electron spins cannot pair up.. Now this, what I wrote here is just a pure interpolation... As it is the magnetic field that is generated by an electron that makes us think that they spin... (reverse thinking). Check the video about magnetic dipole moment, especially the part at the very end of the video. I discuss this. kzbin.info/www/bejne/oniUhYNrYtd-nK8si=R9uNrWksaRPL_UzC
@BurgerMeisterGang
@BurgerMeisterGang 16 күн бұрын
I think that even dc current through a wire can make a magnetic field , and even heat (IR) and light if the current is high enough. Many things to consider , and your vid helps.
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
A DC current will absolutely generate a magnetic field around it (See my video on magnetic fields). Because of the cable's resistance, the temperature will increase (Joule effect). And because of this it can emit Infra red, but here this would be under the form of black body radiation (See my videos on Black bodies)... In other words, the heat generated by the increase of the average kinetic energy of particles on which the moving charges of the current are working. It's not exactly the same cause as described in the video. Light could also be generated, if you heat up the cable strongly enough by the Joule effect (Again see my video on black body radiation), that's how old light bulbs work. But here, it is unpolarised and uncontrolled due to random charge motion (like the light coming from the sun). An AC current is not a random motion...
@RocketPotter
@RocketPotter 16 күн бұрын
kzbin.info/www/bejne/r4rOfmtsbc9qrsksi=6H02tTxtq9MvQWcF
@anustupbiswas9955
@anustupbiswas9955 16 күн бұрын
two voltage sources with emf v1 and v2 (v1≠v2) are connected in parallel, what will be the voltage difference in the common terminal points?
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Well, at first, during a transitory period, the source of highest voltage would charge the second one... A large current would occur in the cables connecting the batteries (it's value would be related to the equivalent resistances of both batteries): The battery of smallest voltage would see its voltage rise, and the reverse for the other. While the difference between voltages decreases, the current would decrease too until it reaches zero. At this point, both voltage would be the same. I do not recommend you try with standard batteries... it would be like trying to charge a non rechargeable battery (risk of explosion)... and the max current at the beginning could lead the cables to melt, and the insulator to catch fire. So keep it a thought experiment :-)
@BasitAliShahi
@BasitAliShahi 17 күн бұрын
What a explanation it was! I have really enjoyed it because i was very anxious about the concept of heat ❤❤❤ thank you sir love from Pakistan
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Hello Ali, I am glad my video clarified things for you, and thus can help you with your studies. Love from France ❤
@majashishsinghrawat5507
@majashishsinghrawat5507 17 күн бұрын
Wonderfully explained ❤❤
@AyinAshique
@AyinAshique 18 күн бұрын
Great Explanation. Your one of the hidden gems of youtube, keep it up
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Thank you so much for these encouraging words Ay!
@BohemianCocoNat
@BohemianCocoNat 20 күн бұрын
This was awesome. I went to fix a polarizer lamp in the lab and went down a rabbit hole. Glad it led me here :)
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Yes Alice ;-), Physics can be a real box of wonders!
@marinvidovic763
@marinvidovic763 22 күн бұрын
If those moving charges create those strong BUT Totaly invisible fields .... my understanding is that Earth, and apl other PLANETS , Sun ..., + other Stars and + Our GALAXY Centre , .... must create enormous Electro/ Magnetic fields all acros the galaxy. Am I imagiming here or (???) ... and by those Fields they influence the entire fabric of space( time) to swirle around ...and around .... (???) . Just considering a posiblity that Those FIELDS are having an influence on human biology clocks in the proces of conception ...so ... that person's temperament might get influenced by the month that s/he is concived in .... .... Look at the spindle in the Cell division .... isn't it 2 poles and like a (electro)magnetic driven process...(???) succeptible to 12 month fluctuations... of those cosmic Fields ... (* Just THINKING next to the fire place in my Modern Cave !) Thanks for intetesting video.
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Hi Marin, : These thoughts are very interesting, it could justify a link between science and astrology haha! Think about it that way: Fields are everywhere, even if their value at a given point is zero. When a planet moves, it perturbates that field like a moving boat perturbates the surface of a lake, so there can be an effect: If you are next to the boat, floating, you would also start to balance at the rhythm of the small ripples created by the boat. But what is you were, say, 1 mile away… the ripples would still be there but of extremely small amplitude, maybe of the height of a few water molecules, mangled within all other influences (A kid jumping in the water 2 miles away, a fish catching an insect 300 m away etc…). All this forms a noise, that is constant. So, no real impact on your motion. Now, Jupiter, the sun, other stars are so far way that their electromagnetic and gravitational impacts are negligible on a human ready to be born. so, whatever their position/motion at the time of birth, it all balances out into a constant background. Consequence: no detectable impact. The only potential impact would be the moon (ocean tides). Yet, the smaller the body of water, the smaller the impact. A human baby is an extremely small lump of water compared to a sea or an ocean… Small but close environmental factors, like the passage of a large truck in a nearby street, the alcohol molecules floating in the air of the breath of a person that had a beer at lunch, or the stress of the noise of nearby construction work would have probably have much more impact on the future life of a new born that any celestial object… These are just too far (roughly, their effect is inversely proportional to the square of the distance) All is a question of amplitude at the position of the object of interest (here the newborn child).
@marinvidovic763
@marinvidovic763 10 күн бұрын
@@PhysicsMadeEasy only One small question... Then... If Moon has 28 days cycle ..then A year is not 12 months but 13 x 28 ... ...what makes 364 days ....and 13 months ( in Slavic languages we call "a month" and a moon same word = {a moon } One moon ... ...then how that remote celestial object Created 28 days menstrusl cycle in the women ...( And again in Slavic language we cap it moon' s cycle { =menstrual cycle} ) ? ...and Baby lives in the utherus exactly 10 moon cycles (280 days !) .... lol... Mindbogling . My belife is that ongluences are much bigger ... Because that gravitational (()???field pulls us All Sun and Planets arrpund the centre of Miky Way with crazy speed ... But we have bo proper way to measure those fields and its influence on processes that we don't yet understand properly. Thanks for your effort ! 👏👏👏
@PhysicsMadeEasy
@PhysicsMadeEasy 9 күн бұрын
@@marinvidovic763 Hi, Your comment activated my curiosity in a field I am not familiar with. This is what I found: Menstrual cycles occur just in 2% of mammalian species. Apes (including us) and a few species of mice and elephants… It’s kind of an anomaly, actually. I found out that the menstrual cycles for all of these were more or less a month across species. (words like Month, Menstrual come also from Moon as you noted…). Some studies find some tendency of synchronization between the Moon cycles and the menstruation cycles (but less than 25%). Still 25% is significant. I dug. And one explanation that comes often is the light at night… I can easily believe that that can have quite a strong influence. It can influence my own mood actually: If I can go outside at 2AM and see thanks to moonlight, I feel less imprisoned in my home, and safer in general, than if its perfect darkness !
@srijanshpadhee8650
@srijanshpadhee8650 22 күн бұрын
Sir thank you for such great explanation over the years
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
You are very much welcome srijan!
@lilpanhoe1220
@lilpanhoe1220 23 күн бұрын
You're the goat man tysm for this, cleared everything and made it super simple, so grateful that i found this channel 👑👑
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Hi Lil, I'm glad my video cleared the path to new understandings for you !! Welcome, and explore the channel, there is a ton of stuff now...
@williamwalker39
@williamwalker39 23 күн бұрын
Relativity is wrong! When are scientists going to wake up and look at the experiments and theory that prove that the speed of light is not a constant speed as once thought, which has been verified by many independent researchers. The results clearly show that light propagates instantaneously when it is created by a source, and reduces to approximately the speed of light in the farfield, about one wavelength from the source, and never becomes equal to exactly c. This corresponds the phase speed, group speed, and information speed. Any theory assuming the speed of light is a constant, such as Special Relativity and General Relativity are wrong, and it has implications to Quantum theories as well. So this fact about the speed of light affects all of Modern Physics. Often it is stated that Relativity has been verified by so many experiments, how can it be wrong. Well no experiment can prove a theory, and can only provide evidence that a theory is correct. But one experiment can absolutely disprove a theory, and the new speed of light experiments proving the speed of light is not a constant is such a proof. So what does it mean? Well a derivation of Relativity using instantaneous nearfield light yields Galilean Relativity. This can easily seen by inserting c=infinity into the Lorentz Transform, yielding the Galilean Transform, where time is the same in all inertial frames. So a moving object observed with instantaneous nearfield light will yield no Relativistic effects, whereas by changing the frequency of the light such that farfield light is used will observe Relativistic effects. But since time and space are real and independent of the frequency of light used to measure its effects, then one must conclude the effects of Relativity are just an optical illusion. Since General Relativity is based on Special Relativity, then it has the same problem. A better theory of Gravity is Gravitoelectromagnetism which assumes gravity can be mathematically described by 4 Maxwell equations, similar to to those of electromagnetic theory. It is well known that General Relativity reduces to Gravitoelectromagnetism for weak fields, which is all that we observe. Using this theory, analysis of an oscillating mass yields a wave equation set equal to a source term. Analysis of this equation shows that the phase speed, group speed, and information speed are instantaneous in the nearfield and reduce to the speed of light in the farfield. This theory then accounts for all the observed gravitational effects including instantaneous nearfield and the speed of light farfield. The main difference is that this theory is a field theory, and not a geometrical theory like General Relativity. Because it is a field theory, Gravity can be then be quantized as the Graviton. Lastly it should be mentioned that this research shows that the Pilot Wave interpretation of Quantum Mechanics can no longer be criticized for requiring instantaneous interaction of the pilot wave, thereby violating Relativity. It should also be noted that nearfield electromagnetic fields can be explained by quantum mechanics using the Pilot Wave interpretation of quantum mechanics and the Heisenberg uncertainty principle (HUP), where Δx and Δp are interpreted as averages, and not the uncertainty in the values as in other interpretations of quantum mechanics. So in HUP: Δx Δp = h, where Δp=mΔv, and m is an effective mass due to momentum, thus HUP becomes: Δx Δv = h/m. In the nearfield where the field is created, Δx=0, therefore Δv=infinity. In the farfield, HUP: Δx Δp = h, where p = h/λ. HUP then becomes: Δx h/λ = h, or Δx=λ. Also in the farfield HUP becomes: λmΔv=h, thus Δv=h/(mλ). Since p=h/λ, then Δv=p/m. Also since p=mc, then Δv=c. So in summary, in the nearfield Δv=infinity, and in the farfield Δv=c, where Δv is the average velocity of the photon according to Pilot Wave theory. Consequently the Pilot wave interpretation should become the preferred interpretation of Quantum Mechanics. It should also be noted that this argument can be applied to all fields, including the graviton. Hence all fields should exhibit instantaneous nearfield and speed c farfield behavior, and this can explain the non-local effects observed in quantum entangled particles. *KZbin presentation of above arguments: kzbin.info/www/bejne/qZazlX1tq7iErLM *More extensive paper for the above arguments: William D. Walker and Dag Stranneby, A New Interpretation of Relativity, 2023: vixra.org/abs/2309.0145 *Electromagnetic pulse experiment paper: www.techrxiv.org/doi/full/10.36227/techrxiv.170862178.82175798/v1 Dr. William Walker - PhD in physics from ETH Zurich, 1997
@SakariEklund
@SakariEklund 23 күн бұрын
what do you mean by "it was already there" 9:39
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Hi Sakari, What I meant is: Look at a spring with a mass at the extremity oscillating on a frictionless surface. Do you see a wave there? No, just an object going back and forth. To see a wave, you would need to connect the masses of multiple springs to each other (perpendicular to the spring themselves). Give an impulse to that system, take a snapshot, and you see a wave shape emerge. If you try to draw the function of displacement with time of a single disconnected spring (i.e. the position of the mass at the end of it), you observe a sine function: The wave was already there, hidden in the maths! So, it's not because you do not see something directly, that it is not there!
@peacetreaty86
@peacetreaty86 25 күн бұрын
Death grips
@jdr5770
@jdr5770 25 күн бұрын
Thank you for explaining this important concept so effectively and thoroughly. I have a couple of questions about polarization, especially when interacting with a surface and creating the angle of incidence equal to the angle of reflectance. First, I'd like to understand the relationship between the direction of propagation and the direction of oscillation in an electromagnetic wave. Is the axis of oscillation always parallel to the direction of propagation? In other words, can an oscillation propagate horizontally while oscillating vertically in relation to the axis it travels along? Secondly, I'm curious about what causes some reflections to come back unpolarized, such as those from bare metals (usually cross-polarisation is required to minimized direct reflection in those cases). Typically, the reflection off the surface of water is polarized, with light oscillating in a plane parallel to the surface and the detector being at the same opposite angle of the angle of incidence. In other words, the surface acts as a polarizing filter. I appreciate any input you can provide. Thank you!
@PhysicsMadeEasy
@PhysicsMadeEasy 13 күн бұрын
Hi, interesting questions jdr... Hi jdr, Question 1 : Light is a transversal wave, so the direction of oscillation is perpendicular to the direction of transfer of energy (= direction of propagation). So to your question : « can an oscillation propagate horizontally while oscillating vertically in relation to the axis it travels along? »… Yes, light always does ! Note that there are waves where the oscillation is parallel to the direction of propagation, these are called longitudinal waves. Sound in an example of such wave… Question 2 : When a beam of light hits an interface, some of the beam reflects and some of it refracts. Such interface could be air/water for example. Both refraction and reflexion are generated by the same oscillating charges. The two beams interfere at source. When the incident light arrives at Brewster’s angle (incident angle such as reflected and refracted rays are 90 degrees apart), the interference leads to the cancellation of a component of the electric field vector (the one perpendicular to the surface). Loosing a component leads automatically to linear polarisation. So for light arriving at this angle, yes, the surface of the water acts like a polariser! As for metal, their electronic structure does that metals do not refract light… so there cannot be any interference here, thus no polarisation of the reflected light.
@Adagioádá
@Adagioádá 26 күн бұрын
Thank you for this brilliant video, it is much appreciated!!
@PhysicsMadeEasy
@PhysicsMadeEasy 25 күн бұрын
You are welcome Ada, I am glad you liked the video.
@yuvarajkavitharaj1888
@yuvarajkavitharaj1888 26 күн бұрын
In 5:25 while incresing the temperature of the metal,the wavelenght must increase right..but why does the graph shifts backwards?
@PhysicsMadeEasy
@PhysicsMadeEasy 25 күн бұрын
Hello Yuvaraj, When the temperature of the black body increases, the energy of the light it emits increases, meaning the frequency increases, and the wavelength shortens. Longer the wavelength, lower the energy of the light: Orange carries more energy than red: Orange light has a shorter wavelength than red light.
@Prokriti_And_Jibon
@Prokriti_And_Jibon 26 күн бұрын
thanks sir
@exploretheknowledge502
@exploretheknowledge502 26 күн бұрын
Thank You Sir for coming Back
@PhysicsMadeEasy
@PhysicsMadeEasy 25 күн бұрын
It's good to be back :-)