Sorry, no mystery in that...All this is explained in classic physics. Successive filters are positioned at a 45° angle so light can pass from 1rst to second, then from second to third.
Seriously? This is a mystery to you? You notice that polarized light can be re-polarized in another direction by adding another polarizing filter, thereby changing the direction and allowing light to pass through? The amount of light that is polarized is proportionate to it's initial direction vs the polarizing material. This is self evident as you can see the amount of light allowed through two polarizers changes gradually as they are rotated.
its cause the 2nd lens screwed up the polarization orientation from the first lens, so the shape is randomized enough that some will get through the third lens.
My understanding is that electrons in the polarizers absorb and re-emit the photons. The same thing happens with a mirror. A mirror does not really reflect light. It absorbs the photons and then emits new photons with the same energy.
@Akshayphadke Watch the Richard Feynman lectures on Vega. Part 2 discusses reflection. The sound quality is poor unfortunately, but it is worth watching. It is also impressive how he could give such good lectures with just a blackboard. No death by Power Point. You may need to watch part 1 first.
@nick1f "How do the microwaves get polarised?" - The same way that light does. It's all photons, just photons with higher/lower wavelength in either case.
In classical physics we say that the current induced in a rod is proportional to the sin of the angle it makes to the direction of polarisation. If at 45 deg the current in the rod falls to 0.7. The rod now re-radiates all this power in the 45 deg plane, The RX now is 45 deg to this new radiation and responds again to 0.7, so the overall loss in the system is 6 dB. But it is a most striking demonstration.
slant 45 degree polarizer cuases some of the power of the waves to refelct half, and half to exiit slant 45 no matter if the input side is transmitting H or V pol. the slant 45 polarizer output then is just also slant 45 which is is a vector sum of H and V poloarizations.and of which passes through the next grating be it V or H, no big deal its just wave theory....
Cool stuff! This is basically how an LCD pixel works; a crystal in-between orthogonal polarizers, which is twisted by an electric current (or in this case by a hand) so that the polarization of the light coming through is rotated by 45 °.
They are just camera polarising filters. You can get them fairly cheap on eBay, particularly if you don't care what diameter you get. I bought them to make a polariscope for the detection of stress in glass. You may also be able to get polarising plastic sheet, which would be cheaper.
Sorry, no mystery in that...All this is explained in classic physics. Successive filters are positioned at a 45° angle so light can pass from 1rst to second, then from second to third.
ProkofievAMD 3 weeks ago
damn thats funny lol i want more lol
puma151987 1 month ago
Thank you THANK YOU THANKYOU!
AClassOldie 8 months ago
Seriously? This is a mystery to you? You notice that polarized light can be re-polarized in another direction by adding another polarizing filter, thereby changing the direction and allowing light to pass through? The amount of light that is polarized is proportionate to it's initial direction vs the polarizing material. This is self evident as you can see the amount of light allowed through two polarizers changes gradually as they are rotated.
Euph0ria74 9 months ago
its cause the 2nd lens screwed up the polarization orientation from the first lens, so the shape is randomized enough that some will get through the third lens.
aplacefaraway 9 months ago
@aplacefaraway sorry this is not correct according to Mr. Jogi
ktzluke 3 months ago
the mesh odoes not only stop waves but also EMMITS WAVES right ?
zloben9000 1 year ago
My understanding is that electrons in the polarizers absorb and re-emit the photons. The same thing happens with a mirror. A mirror does not really reflect light. It absorbs the photons and then emits new photons with the same energy.
teralabUK 1 year ago
@teralabUK rofl, mirror DOESNT absorbs the photons and then emits new photons with the same energy. It reflects the whole wave.
Akshayphadke 11 months ago
@Akshayphadke You are talking classical physics.
teralabUK 11 months ago
@teralabUK can you tell me any sources where I can see, if u r right?
Akshayphadke 11 months ago
@Akshayphadke Watch the Richard Feynman lectures on Vega. Part 2 discusses reflection. The sound quality is poor unfortunately, but it is worth watching. It is also impressive how he could give such good lectures with just a blackboard. No death by Power Point. You may need to watch part 1 first.
teralabUK 10 months ago
If you add the third polarizer in between or outside of the two other polarizers, does it make a difference? I expect it would not matter.
How do the microwaves get polarised?
nick1f 1 year ago
@nick1f "How do the microwaves get polarised?" - The same way that light does. It's all photons, just photons with higher/lower wavelength in either case.
Widgetas 1 year ago
In classical physics we say that the current induced in a rod is proportional to the sin of the angle it makes to the direction of polarisation. If at 45 deg the current in the rod falls to 0.7. The rod now re-radiates all this power in the 45 deg plane, The RX now is 45 deg to this new radiation and responds again to 0.7, so the overall loss in the system is 6 dB. But it is a most striking demonstration.
msf60khz 1 year ago
slant 45 degree polarizer cuases some of the power of the waves to refelct half, and half to exiit slant 45 no matter if the input side is transmitting H or V pol. the slant 45 polarizer output then is just also slant 45 which is is a vector sum of H and V poloarizations.and of which passes through the next grating be it V or H, no big deal its just wave theory....
livingharmony 1 year ago
Ah. A 'just' man. Don't forget that this works for individual (indivisible) photons.
teralabUK 1 year ago 2
good job, i also demonstrate this but only visually.
KakHazhar 1 year ago
awesome!
martintzvetomirov 2 years ago
Nice video!
In my video Quantum Mechanics an artist view Time has the symmetry and geometry of spacetime this would give us polarization.
nickharvey7 2 years ago
Cool stuff! This is basically how an LCD pixel works; a crystal in-between orthogonal polarizers, which is twisted by an electric current (or in this case by a hand) so that the polarization of the light coming through is rotated by 45 °.
kybalion2009 2 years ago
They are just camera polarising filters. You can get them fairly cheap on eBay, particularly if you don't care what diameter you get. I bought them to make a polariscope for the detection of stress in glass. You may also be able to get polarising plastic sheet, which would be cheaper.
teralabUK 2 years ago
oh yes the plastic sheets work, but are rather floppy. you should back them up to make them easy to handle.
pwntalive 2 years ago
That was the most amazing thing I've ever seen.
thecaster 2 years ago