What could be the reason why convex lenses can concentrate light

The reason why convex lenses can concentrate light may be because of the refraction of light.

Note: Convex lens imaging is the refraction of light, and we are studying thin lenses, so it only involves the refraction of light twice - at the left and right interfaces of the lens.

When light is obliquely transmitted from one transparent medium to another, the direction of propagation generally changes, a phenomenon called refraction of light. Understanding: The refraction of light and the reflection of light occur at the junction of two media, but the reflected light returns to the original medium, while the refracted light enters another medium, because the light travels at different speeds in two different substances, so the direction of propagation changes at the junction of the two media, which is the refraction of lightNote:

At the junction of the two media, both refraction and reflection occur. The speed of light of reflected light is the same as that of incident light, and the speed of light of refracted light is different from that of incident light.

Convex lenses take advantage of the law of refraction of light, which is produced when different media are converted. Based on this characteristic, convex lenses, concave lenses, microscopes, and cameras are manufactured.

Because the convex lens will concentrate the light into a point to form strong light and high temperature, this is called concentrated light.

Hello dear, convex lenses have a converging effect on any light. The convex lens is a common lens of this liquid, with a thick middle and thin edges. When light rays enter the convex lens from the air, the refractive angle is less than the angle of incidence due to the refraction of the light, and the light rays are deflected to a thicker shape.

A convex lens is a common type of lens that is thick in the middle and thin at the edges. When light rays enter a convex lens from air due to the refraction of light, the angle of refraction is less than the angle of incidence, and the light rays are deflected towards a thicker deflection. The parallel light rays (such as sunlight) parallel to the main optical axis (the connection line of the spherical scum center of the two spherical surfaces of the convex lens is called the main optical axis of this lens) is injected into the convex lens, and the light is concentrated at a point on the axis after two refractions on both sides of the lens, so the convex lens has a convergence pin base for any wandering light.

Convex translucent mirrors are made according to the principle of refraction of light. Convex lenses are thicker lenses with thinner edges. Convex lenses are divided into the forms of double convex, plano-convex hunger and concave and convex (or positive meniscus), convex lenses have the effect of converging rays, so they are also called converging lenses, and the convex lenses that are thicker are expected to be far away and converge, which is related to the thickness of the lens.

Farsighted glasses are convex lenses.

Don't make noise about the circle.

The semi-correct statement is that convex lenses have a converging effect on light. This sentence means that the outgoing light rays are more bent towards the main optical axis in the direction of propagation than the incident light, that is, bent towards the main optical axis. The converging light is relative to the divergence of light, that is, the light converges at one point in the direction of its propagation, and the divergent light is the convergence of light at one point on the reverse extension line of its propagation!

For example, for example, the divergent orange light emitted at the focal point becomes parallel light through the lens, and the propagation direction is folded to the main optical axis relative to the original divergent light, that is, the bending reflects the convergence effect of the lens, but what comes out is parallel light, not divergent light!

To say that it is semi-correct is to say that it is not always correct, and that it is conditional. That is, the refractive law of the medium outside the lens must be smaller than that of the lens. For example, a glass lens is placed in the air.

However, if the other way around, the air lens is placed in the glass (like a small bubble in the glass).This lens has a divergent effect on light!

This is the phenomenon of light refraction in physics, and we know that when light rays enter from one medium to another, the light rays will be deflected and no longer propagate in the original direction of propagation, which is the refraction of light.

For the general transparent medium such as glass, if it is a cuboid structure, or at least two sides are parallel to each other, then the light enters the glass from one side and then shoots out from the other side, then the incident ray and the exit ray are parallel, but for the glass body like the convex lens, because the two faces are not parallel, but a face is convex, then the light will be deflected in the process of propagating inside, and the deflection direction is deflected to the thicker side, because the common convex lenses are circular. And the outside is thin and the inside is thick, so eventually the light is segregated to the middle, and finally converges at a point on the perpendicular line of the convex lens, forming the bright spot we see, which in physics we call the focal point. This is how the magnifying glass is focused.

When a myriad of intense rays of light converge at the same point, it generates a powerful heat that is hot enough to ignite a lot of matter.

Hope it can help you, please give a "good review".

Light is focused on a point by refraction.