Find a prism and put it in the sun, what kind of dispersion of light can be observed through the pri

The phenomenon of the decomposition of polychromatic light into monochromatic light is called the dispersion of light Newton was the first to observe the dispersion of light with a prism in 1672, and decomposed white light into colored light bands (spectrum).The phenomenon of dispersion states that the velocity (or refractive index n=c v) of light in a medium varies with the frequency of the light. The dispersion of light can be achieved with prisms, diffraction gratings, interferometers, etc.

White light is composed of red, orange, yellow, green, blue, indigo, violet and other colors of light, which is called polychromatic light. Red, orange, yellow, green, and other colors of light are called monochromatic light.

After the polychromatic light enters the prism, because it has different refractive indices for light of various frequencies, the propagation direction of various colored lights has different degrees of deflection, so when it leaves the prism, it disperses separately to form a spectrum.

From top to bottom, red, orange, yellow, green, blue, indigo and purple.

See a spectrum. White light is made up of all visible light.

It is made of transparent material and has a triangular cross-section.

The optical instrument is also called a "prism", and the transparent body with a triangular cross-section in optics is called a prism.

A prism of a photodense medium is placed in a photophobic medium (usually in air), and the light incident on the side of the prism is refracted by the prism and deflected towards the underside of the prism. Light enters from one side of the prism and exits from the other, and the outgoing light will be deflected towards the underside (the third side), the magnitude of the deflection angle is the same as the refractive index of the prism.

The apex angle of the prism is related to the angle of incidence White light is a polychromatic light composed of various monochromatic lights; The refractive index of the same medium is different for different colors of light; Different colors of light propagation in the same medium at different speeds Therefore, because the same medium has different refractive indices for various monochromatic lights, the deflection angle of each monochromatic light is different when passing through the prism. As a result, white light passing through a prism separates the monochromatic light and forms red. Orange.

Yellow. Green. Blue.

Indigo. The seven colors of purple light are dispersion.

The description in the book is correct.

It depends on whether the top angle of the prism is facing up or down. It's also about the incident surface, so you check the specifics of the surface where the light enters the experiment.

As shown below:

After two refractions, one reflection, there should be one less reflection.

I didn't use the light screen, and what I saw was an inverted (inverted) virtual image of equal size.

Newton discovered that a beam of white light passed through a prism and was dispersed into seven different colors of light due to the refraction and wavelength of the light. This phenomenon is called the dispersion of light

The optical principle of the prism is that the light rays are deflected, and the parallel rays are deflected to the base after passing through the prism, which causes the object image to shift to the top of the prism.

Isaac Newton (1642-1727), an English physicist, mathematician, and astronomer, studied optics with great interest and enthusiasm. In 1666, Newton performed his famous dispersion experiment with a prism while on vacation at home. After a beam of sunlight passes through the prism, it is decomposed into several color spectral bands, and then a baffle with a slit is used to block the light of other colors, and only one color of light passes through the second prism, and the result is only the same color of light, so it is found that white light is composed of various different colors of light.

In order to verify this discovery, Newton managed to synthesize several different monochromatic lights into white light, and calculated the refractive index of different colors of light, which accurately explained the phenomenon of dispersion and uncovered the mystery of the color of matter, which is caused by the different reflectance and refractive index of different colors of light on objects. In 1672, Newton published his findings in the Philosophical Journal of the Royal Society. Newton's spectroscopic experiments brought geometrical optics into a new field:

Physical Optics. Newton proposed the "particle theory" of light, which believed that light is formed from particles and follows the fastest linear path.

Colorless sunlight can be broken down into color by a prism. （）

a.That's right. b.Mistake.

Correct Answer: a

White light passes through a prism.

Light can be refracted into various colors, and they are: red, orange, yellow, green, blue, indigo, and violet from one end to the other. Black is not included.

Additional Knowledge: Triangular Prism Dispersion of Sunlight.

Experimental phenomena let the enlightenment:

1) In the experiment, it can be seen that after the white light passes through the prism, it not only changes direction, but also forms a colored light band on the white screen, and the colors on the color band are red, orange, yellow, green, blue, indigo, and purple from one end to the other.

2) In the experiment, it can also be seen that the colored skin light bands reconverge into white light.

White light is composed of light of different frequencies, and the refractive index of various round wax light is not the same, so seven colors of light will be produced on the prism, and the incident light of a single color will not have this phenomenon, and the refractive index of monochromatic light is the same.

a. The first to experimentally study the dispersion of light was the British physicist Isaac Newton.

Therefore A is correct B. Galileo.

Experiments have confirmed that the heliocentric theory is therefore b's wrong

C, Archimime did not know that he discovered the principle of lever and Archimedes' principle, so C is wrong D, Oster is suspected of giving up the current magnetic effect, so D is wrong so A