What happens to the energy when two beams interfere with each other and create a dark zone?

A beam of light can be thought of as being composed of a series of waves. If two beams meet at a small angle, then the waves of one beam may meet the waves of the other beam in such a way that the upward motion of one wave happens to meet the downward motion of the other, and vice versa.

At this point, the two waves "interfere" with each other and partially or even completely cancel each other out. As a result, the light produced by the two waves combining in this way is less intense than the light produced by either of these two waves alone.

But each wave train represents a certain amount of energy. If one wave cancels out another wave, creating a dark area where there was light, does that mean that the energy is gone?

Of course not! One of the fundamental laws of physics is the inextinguishability of energy, which is the "law of conservation of energy". In interference, certain energies no longer exist in the form of light. In this way, there must be exactly equal amounts of energy in some other form.

The worst organized form of energy is the irregular motion of the particles that make up matter, which we call "heat." When energy changes form, it always tends to lose its organization, so when energy seems to be gone, it is better to look for heat, for molecules that move irregularly at a higher speed than before.

This is the case when light interferes. Theoretically, you could arrange the two beams in such a way that they interfere completely. At this point, let these two beams be projected onto a screen, and the screen will be completely dark.

But in this case, the screen gets hot. The energy doesn't go away, it just changes form.

Now suppose you let the winding spring dissolve in acid. At this point, what happens to the energy?

At this time, the energy is also converted into heat. If you start with two cups of an acid solution at the same temperature, and then let the unwound spring dissolve in one cup of acid solution and the wound spring in another cup of acid solution (the same is true for swapping the two cups of solution), the temperature of the solution that dissolves the spring is a bit higher than that of the solution that dissolves the unwound.

It was not until 1847, after physicists thoroughly understood the nature of heat, that the law of conservation of energy was understood.

Since then, people have gained a new understanding of some basic phenomena because of their belief in this law. For example, the amount of heat generated in radioactive transmutation was more than might have been anticipated by physical calculations in the nineteenth century, and this problem was not solved until Einstein proposed his famous equation e mc2, which showed that matter itself is a form of energy.

Similarly, the energy of the electrons produced in some radiotransmutations is too small. In 1931, Pauli did not believe that this phenomenon violated the law of conservation of energy, and proposed that not only electrons were produced, but also another particle, neutrinos, which took the rest of the energy with them.

He was right.

When two beams of light they change the interference and turn into heat.

The collision of two beams of light will cause the brightness to intensify.

If two beams of light have the same frequency, the phenomenon of light interference occurs.

Energy is converted into heat. Changed the form, but did not disappear.

It's just that it changes its form and converts it into heat.

If two beams meet at a small angle, then the individual waves of one beam may meet in the same way as the individual waves of the other beam.

That might be converted into heat, but it doesn't go away, because the energy doesn't go away for no reason.

It may turn into heat, and it won't go away because the energy doesn't go away for no reason.

There may be an outpouring of energy, or it may coexist with each other.

The energy is not gone, it is just converted into heat.

a. In the interference phenomenon of light, the interference light fringe part is the place where the photon has a high probability of reaching, and the dark fringe part is the place where the photon has a small chance of reaching Therefore, a is correct;

b. The principle of the anti-reflection coating of the optical lens is that the thin film of light interferes to increase the transmittance of visible light, so B is wrong;

c. The optical fiber is the total reflection phenomenon of light, so that the light can always propagate within the specified route, so C is wrong;

d. Polarized light is the light that vibrates in a specific direction, and natural light is the light that vibrates in all directions and is evenly distributed

Therefore, a

Answer B only has light waves with the same frequency, constant space, and the same direction of vibration, and in the space where they meet, Lu Kuan can produce stable interference, and a stable interference pattern is observed, so B should be chosen

This statement is completely incorrect, and it is not correct beforehand. (1) Light waves are not formed by the interaction between photons. You have to understand that the essence of light is electromagnetic waves, which is a kind of wave, and photons are a concept we introduced, when the wavelength of light is relatively large, it is more convenient to treat light as a wave, and it is more convenient to treat it as a particle when the frequency is relatively large.

For nature, there are currently 4 interactions, 1 ° photon is no static mass, that is to say, it must move at the speed of light, so for each photon is identical, relatively speaking, one photon is stationary to another photon, that is to say, there is no gravitational effect, 2 ° light is not charged, and there is no electromagnetic force, although light is an electromagnetic wave, but the wave is in line with the principle of superposition, in which there is no repulsion or attraction, 3 ° As for the weak interaction and strong interaction, there is no such thing as weak interaction and strong interaction in light. Therefore, there is no interaction between photons, and photons belong to bosons, which obey Bose-Einstein statistics and are not limited by Pauli's incompatibility principle. (2) We believe that a single photon also has fluctuation, all microscopic particles have wave-particle duality, photons are no exception, light itself is an electromagnetic wave, for a photon, of course, it also has fluctuation, in a beam of light, each photon is parallel, does not affect each other, and each has fluctuation characteristics.

For these things, I would also like to say that the photons in a beam of light are parallel, do not affect each other, and each has its own fluctuations, if not, because the photons are identical, there is either pure repulsion or there is noise and pure gravity, have you ever seen a beam of light that shoots into a vacuum "diffuse" (repulsion) or becomes "sticky" (gravitational)?! The double-slit single-photon experiment is to emit only one photon at a time, and after 10,000 experiments, the result still shows the wave characteristics on the light screen, which is a statistical law, but this proves that light has fluctuation, and light is composed of photons, that is, photons also have fluctuation.

Wave-particle duality is a basic property of matter, and it does not exist because it is not a single photon and the nature of the wave does not exist Photons are not quantized, and the spin is zero, and there is no interaction, not to mention the generation of light waves, which are generated by the transition of electromagnetic fields in a high-energy excited state to a low-energy state.

Light is wave-granular, and what the nature of light shows depends only on what measurements you make, so I think individual photons have fluctuations.

Light has wave-particle duality, and the distance between the baffle and the screen should also be proven.

A single photon can also exhibit waveability, as in the case of double-slit single-photon experiments.

a. The wavelength of the photon with greater energy is shorter, and its particle property is more significant, so a mismatches the pure group;

b. The longer the wavelength of light, the more significant its volatility, the higher the frequency, the shorter the wavelength, the more significant its particle, so B is positive;

c. Photons have both wave and particle properties, and wave-particle duality means that light sometimes behaves as waves, and sometimes as particles, so C is correct;

d. The effect of individual photons is often particle-like; The effect of a large number of photon pants nuclei tends to be fluctuating, so d is correct;

If you choose an incorrect question, choose a

Answer C is talking about the phenomenon of Tyndall cavity in the description of the topic, and to appear such a phenomenon, hunger should be in the colloidal rotten nucleus dispersion system, and in the option, only C is the colloidal dispersion system, so C should be chosen.

As soon as two light waves meet, light and dark interference fringes are formed. （）

a.That's right. b.Mistake.

Correct answer: B