0 Members and 1 Guest are viewing this topic.
Quote from: hamdani yusuf on 16/12/2022 01:18:05Considering how many misconceptions we can find online,Like the idea that a meaningful amount of light will go through a steel ball bearing...
Considering how many misconceptions we can find online,
I found no reference in quantum mechanics textbooks which decisively state the errors of those principles
Quote from: hamdani yusuf on 16/12/2022 01:18:05I found no reference in quantum mechanics textbooks which decisively state the errors of those principlesPrecisely because they don't describe quantum events!For the umpteenth time: we need two distinct mathematical models of electromagnetic phenomena. We use continuous wave equations to describe propagation, and quantum mechanics to explain microscopic interactions with matter. So far, one or other always works, and the experimental result tells you which one to use.
Quote from: Bored chemist on 16/12/2022 08:54:34Quote from: hamdani yusuf on 16/12/2022 01:18:05Considering how many misconceptions we can find online,Like the idea that a meaningful amount of light will go through a steel ball bearing...Isn't it your idea?
Most people consider a ball bearing to be perfectly opaque to visible light.
Steel is not perfectly opaque in visible light spectrum. It has penetration depth longer than the wavelength.
Prior to Newton, heavenly bodies were thought to follow a different set of rules compared to terrestrial objects.
And I pointed out that , if that's really what you believe, you can easily prove it.
The rest of the video can be watched here//www.youtube.com/watch?v=rVmE_O-f6Q4video #2 Edge shapes effect//www.youtube.com/watch?v=VOZtpoqajusvideo #3 Diffraction by transparent objects//www.youtube.com/watch?v=FahdhYJSb9gvideo #4 Non-diffractive Obstacle
Here is a new video demonstrating diffraction of microwave using multilayer metal grating, which is a meta-material.//www.youtube.com/watch?v=f5h2OOpD1pISame as diffraction by normal material, it only occurs when the meta-material is adequately transparent to the microwave.
We use continuous wave equations to describe propagation, and quantum mechanics to explain microscopic interactions with matter.
Quote from: hamdani yusuf on 08/12/2022 02:28:30Quote from: Bored chemist on 07/12/2022 12:44:35But any illuminated edge diffracts.Not necessarily. I've shown non-diffractive edge in experiments using total internal reflection in visible light. I 've also shown using a metal plate and microwave. From my experience, diffraction requires partial opacity/transparency. Perfectly opaque objects, as well as perfectly transparent objects don't produce observable diffraction.In visible light range of frequency, metals are partially transparent. This video from 4:20 time stamp shows this clearly.//www.youtube.com/watch?v=56rcm-FMeOoMost published experiments involving diffraction of light, including double slit experiments often ignore this.
Quote from: Bored chemist on 07/12/2022 12:44:35But any illuminated edge diffracts.Not necessarily. I've shown non-diffractive edge in experiments using total internal reflection in visible light. I 've also shown using a metal plate and microwave.
But any illuminated edge diffracts.
Optical phonons are out-of-phase movements of the atoms in the lattice, one atom moving to the left, and its neighbor to the right. This occurs if the lattice basis consists of two or more atoms. They are called optical because in ionic crystals, such as sodium chloride, fluctuations in displacement create an electrical polarization that couples to the electromagnetic field.[2] Hence, they can be excited by infrared radiation, the electric field of the light will move every positive sodium ion in the direction of the field, and every negative chloride ion in the other direction, causing the crystal to vibrate.https://en.m.wikipedia.org/wiki/Phonon
It's easily deduced from my previous video, especially when using a cutter knife made of steel. How do you think the light can go to the area behind the knife?
For those who doesn't know that metals are partially transparent in visible light spectrum.
I think it's possible to explain how light seem to propagate through the edge of a ball as optical phonon.
You discover that light that goes through gold leaf is green.
Quote from: hamdani yusuf on 16/12/2022 14:49:29It's easily deduced from my previous video, especially when using a cutter knife made of steel. How do you think the light can go to the area behind the knife?By going through the air.Was that really a serious question?
Incidentally, you need to be very careful with the "edges" of transparent objects.The manufacturers generally polish the edges to give something curved (so it isn't dangerously sharp).But a curved bit of glass is a lens and will produce changes of the light beam that you might not have considered.Can you explain how you have allowed for this factor?
Quote from: hamdani yusuf on 16/12/2022 15:41:08For those who doesn't know that metals are partially transparent in visible light spectrum.Who doesn't know that?I have seen through gold leaf.A cheap mirror will show the effect just fine if you clean the paint off the back.You seem not to have noticed some of my words.Quote from: Bored chemist on 15/12/2022 08:33:54Most people consider a ball bearing to be perfectly opaque to visible light.I know it isn't strictly true. But it's very close to true.And we know that the light that forms the bright spot at the centre of a shadow can't be due to light going through the metal.So we know that it's near enough to being true.
So we know that the light is not going through the metal.
Quote from: hamdani yusuf on 09/10/2021 15:06:06The expected result in reply #76 wouldn't make sense according to conservation of energy, if the transmitter actually sends a single photon at a time, which then triggers the detectors. But it makes sense if the transmitter transmit the dim light continuously, and trigger the detectors after they accumulate adequate amount of energy. That's why temperature of the detectors affects the detection rate. The main difference between my hypothesis and photon model is where the randomization occurs. My hypothesis asserts that the randomization occurs at the detector. Light energy received by the detector will either be reflected, absorbed, or transmitted. Absorbed light will be transformed into other forms of energy, like heat, light at different frequency, chemical reaction, electron ejection, etc. which can be sensed by detector.In photon model, randomization occurs at the transmitter, as well as beam splitter. Many pop-sci articles presented that the event when a detector is triggered simply means a photon has been captured, with no room for uncertainty. AFAIK, it is affected by environmental condition, such as temperature, cosmic ray, interference of electromagnetic wave, and electrical potential applied to the detector.
The expected result in reply #76 wouldn't make sense according to conservation of energy, if the transmitter actually sends a single photon at a time, which then triggers the detectors. But it makes sense if the transmitter transmit the dim light continuously, and trigger the detectors after they accumulate adequate amount of energy. That's why temperature of the detectors affects the detection rate.
Here is another video investigating the effect of twin polarizer.//www.youtube.com/watch?v=HHVs8Y555ekIt shows the effect of double polarizer when they are close to each other but are still separated electrically. The last part shows the polarisation of microwave coming out from the last polarizer.The next video will show the effect of double polarizer when they are close to each other and electrically connected, so stay tuned.
And here are videos demonstrating conjoined twin polarizer//www.youtube.com/watch?v=eVVxSrjvS7o//www.youtube.com/watch?v=k4-357xklQUIn the end of the experiment, it's shown that rotating the receiver can make the reading down to 0, which means that the microwave is linearly polarized instead of eliptical or circularly polarized.