Is the 50HZ electromagnetic wave a single independent quantum like the photon of visible light? After all, the size is too large?

深圳小花

Is the 50HZ electromagnetic wave a single independent quantum like the photon of visible light? After all, the size is too large? [Copy link]

 

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The wavelength of a 50 Hz electromagnetic wave is 300,000,000 meters / 50 = 6,000,000 meters . Is it a single independent quantum like the photon of visible light? After all, if the quantum is this size, it is too large.

maychang

"Is the 50Hz electromagnetic wave a single independent quantum like the photon of visible light?"

This is another question that “can’t be asked this way”.

maychang

"After all, this size is too big?"

What physical quantity does “this size” refer to? Which quantity is too large?

深圳小花

maychang posted on 2021-9-2 15:12 "After all, this size is too big?" What physical quantity does "this size" refer to? Which quantity is too big?

Thank you very much. 50HZ electromagnetic wave 30 0000 000 meters / 50 = 6000 000 meters, its wavelength size is 6000 000 meters. Is there such a large quantum?

maychang

Shenzhen Xiaohua published on 2021-9-2 15:28 Thank you very much. 50HZ electromagnetic wave 30 0000 000 meters / 50 = 6000 000&nbs ...

6,000,000 meters, that is the wavelength as you said. There is no such thing as a "size" of a photon, and there is no such thing as a photon size that must be compared to the wavelength of an electromagnetic wave.

maychang

Shenzhen Xiaohua published on 2021-9-2 15:28 Thank you very much. 50HZ electromagnetic wave 30 0000 000 meters / 50 = 6000 000&nbs ...

The energy of a photon is related to its wavelength. The wavelength multiplied by the frequency is the propagation speed of the electromagnetic wave. The energy of a photon is its frequency multiplied by Planck's constant. Therefore, the longer the wavelength (the lower the frequency), the smaller the energy of the photon.

maychang

Shenzhen Xiaohua published on 2021-9-2 15:28 Thank you very much. 50HZ electromagnetic wave 30 0000 000 meters / 50 = 6000 000&nbs ...

For 50Hz electromagnetic waves, the energy of light quanta is so small that it cannot be detected by existing technical means.

maychang

Shenzhen Xiaohua published on 2021-9-2 15:28 Thank you very much. 50HZ electromagnetic wave 30 0000 000 meters / 50 = 6000 000&nbs ...

Generally speaking, the higher the frequency of electromagnetic waves, the greater the energy of a single photon, and the more it resembles a "particle". The lower the frequency, the smaller the energy of a single photon, and the less it resembles a "particle".

chunyang

The basic concept is wrong. If you want to understand, you must first study, not imagine.

深圳小花

chunyang posted on 2021-9-3 13:56 The basic concept is wrong. If you want to understand, you must first study, don't imagine it yourself.

Thank you very much. I want to know the basic concept is wrong, where is the mistake. I want to know the relationship between energy and mass, you just need to tell me E=MC^2, now you tell me to derive it like Lao Ai, isn't it a waste of time? Now the emphasis is on functions, just take the ready-made functions and use them, there is no need to spend half a year to learn such profound knowledge

chunyang

Shenzhen Xiaohua published on 2021-9-3 14:47 Thank you very much. I would like to ask where the basic concept is wrong. I want to know the relationship between energy and mass. You only need to tell me E=MC^2...

What else is wrong with the basic concept? There is no bigger mistake than this. If you don't spend enough time studying, you can't understand the relevant concepts at all, let alone talk about them. And to understand, you need to study for much longer than half a year.

深圳小花

Chunyang published on 2021-9-3 15:25 Where else is the basic concept wrong? There is no mistake more serious than this one. If you don't spend enough time studying, you will never understand the relevant concepts...

Thank you very much. I can't go to graduate school for antenna design just to use an antenna for NB.

maychang

Shenzhen Xiaohua published on 2021-9-3 14:47 Thank you very much. I would like to ask where the basic concept is wrong. I want to know the relationship between energy and mass. You only need to tell me E=MC^2...

"There's no need to spend another half a year learning such profound knowledge."

The debate about whether light is a wave or a particle has been going on for more than 300 years, starting with Huygens and Newton. It has not been completely resolved yet. During these 300 years, how much time have physicists spent on experiments? How much time have they spent on thinking and arguing? You think you can learn it in "half a year"? That's too easy.

maychang

Shenzhen Xiaohua published on 2021-9-3 14:47 Thank you very much. I would like to ask where the basic concept is wrong. I want to know the relationship between energy and mass. You only need to tell me E=MC^2...

Even if it takes ten times as long as half a year, which is five years, it is not easy to fully understand the concept of photons.

Not to mention ordinary people like you and me, even a figure like Einstein would make a mistake on this issue. Have you heard of "quantum entanglement"? These experiments (not just one, but many experiments done by scientists from many countries) have confirmed that Einstein was wrong on the issue of "quantum entanglement". Of course, Einstein had been dead for many years when these experiments were conducted.

maychang

Shenzhen Xiaohua published on 2021-9-3 14:47 Thank you very much. I would like to ask where the basic concept is wrong. I want to know the relationship between energy and mass. You only need to tell me E=MC^2...

"Is the basic concept wrong? Where is it wrong?"

I have already mentioned a small part of your conceptual errors on the 5th floor: there is no such thing as "size" of photons, and there is no such thing as the size of photons that must be compared with the wavelength of electromagnetic waves.

maychang

Shenzhen Xiaohua posted on 2021-9-3 15:27 chunyang posted on 2021-9-3 15:25 Basic concept error, what else is wrong? There is no more serious mistake than this one. If you don't spend enough...

Indeed, for antennas, you can just use a ready-made design, just like you can use a single-chip microcomputer, without having to know how the chip is designed or how it is made.

However, your ignorance of the chip manufacturing process does not prevent you from using the microcontroller, but it limits your discussion of the chip design and manufacturing process - you simply cannot communicate with the chip designers and manufacturers.

chunyang

Shenzhen Xiaohua posted on 2021-9-3 15:27 chunyang posted on 2021-9-3 15:25 Basic concept error, what else is wrong? There is no more serious mistake than this one. If you don't spend enough...

Using an antenna and designing an antenna are two different things. Moreover, physical objects such as devices, tools, and items are different from theories. Physical objects can be used without knowing the principles, but it is impossible to discuss theories without understanding them. The two are completely incomparable.

maychang

Shenzhen Xiaohua posted on 2021-9-3 15:27 chunyang posted on 2021-9-3 15:25 Basic concept error, what else is wrong? There is no more serious mistake than this one. If you don't spend enough...

"I can't go to graduate school for antenna design just to use an antenna for my NB."

Do you know Ernest Rutherford? After winning the Nobel Prize, Rutherford took a one-semester probability course at the Department of Mathematics in Cambridge to solve the computational problems in the alpha particle scattering experiment. A genuine professor who had already won the Nobel Prize took an undergraduate course. This is Rutherford.

深圳小花

maychang posted on 2021-9-3 16:11 "I can't go to graduate school for antenna design just to use an antenna for NB water water." Do you know Europe...

In fact, in most cases, I only need to know how to use it, which corresponds to only one knowledge point, rather than how to make it, which may require learning millions of knowledge points. For example, when I use a microcontroller, I only need to know how to use it, but I don’t need to know how to design or manufacture a 5-nanometer microcontroller.

maychang

Shenzhen Xiaohua published on 2021-9-4 10:48 In fact, in most cases, I only need to know how to use it, which corresponds to only one knowledge point, rather than how to build it. I may need to learn millions of...

From a practical point of view, it is indeed unnecessary to know the photons.

In fact, the bipolar transistor was invented based on the knowledge of quantum mechanics. Among the three inventors of the transistor, Shockley later became a professor at Stanford University, teaching solid-state physics. Bardeen was a professor of physics at the University of Illinois, also studying solid-state physics. Later, he won the Nobel Prize in Physics for the second time for his theory of superconductivity and served as the president of the American Physical Society. The third inventor, Brattain, became a professor at Whitman College, engaged in semiconductor physics research, and discovered the photoelectric effect on the free surface of semiconductors.