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Is it true that the less curved a lens is the more it refracts light?
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How do you a curved surface of a lens affects the transmission of light?
More curved surfaces will change the angle of refraction when compared to a less curved surface, independent of the angle of the light source.
How the focal length of a convex lens changes as the sides of the lens become less curved?
Longer focal lengths and less light rays are being bent. :) It's in the book.
Can we curve light?
Very good question. To make a body to move along a curved path it has to be massive. But photon, the quantum of light, is having zero rest mass and even in motion negligible mass. If the particle is charged one, it can be driven along a curved path as in the case of charged particle in a magnetic field. But photon is charge less. But light can be bent. As light falls on a glass prism, then the out coming light is found to be deviated towards the base of the prism. By using the phenomenon of total internal reflection, light is easily taken through the optical fibres now a days. Light can be assumed to be along a curved path as if we see that light passes through curved optical fibre. But the reality is not so. With the idea of gravitational lens, of course, light can go along a curved path.
What is the difference between dispersion and reflection?
Dispersion is when light is refracted inside a prism and all the colours are separated because red light refracts less than violet light. Reflection is when light hits an object and bounces back off it.
What happend to rays of light when they are refracted by a convex lens?
Now suppose that the rays of light are traveling through the focal point on the way to the lens. These rays of light will refract when they enter the lens and refract when they leave the lens. As the light rays enter into the more dense lens material, they refract towards the normal; and as they exit into the less dense air, they refract away from the normal. These specific rays will exit the lens traveling parallel to the principal axis.
How do you a curved surface of a lens affects the transmission of light?
More curved surfaces will change the angle of refraction when compared to a less curved surface, independent of the angle of the light source.
How the focal length of a convex lens changes as the sides of the lens become less curved?
Longer focal lengths and less light rays are being bent. :) It's in the book.
What does stopping down the lens' mean?
That means increasing the f-stop (which actually reduces the amount of light that passes through the lens). Since the lens is curved, the result of increasing the f-stop usually is that just about everything is in focus (huge depth of field or DOF) because the surface area of the lens being used is minimal and thus less "curved" where the light enters.
Is there more or less light passing through the ocular lens when using the higher power objective lens compared to the low power why?
Less light
What 3d shape is this- 1 curved edge plus 1 flat surface plus 1 curved surface?
its a lens...1 curved edge = a circle, 1 flat surface = back, 1 curved surface = front. (these are used in some battery-less flashlights, as an example.)
Can we curve light?
Very good question. To make a body to move along a curved path it has to be massive. But photon, the quantum of light, is having zero rest mass and even in motion negligible mass. If the particle is charged one, it can be driven along a curved path as in the case of charged particle in a magnetic field. But photon is charge less. But light can be bent. As light falls on a glass prism, then the out coming light is found to be deviated towards the base of the prism. By using the phenomenon of total internal reflection, light is easily taken through the optical fibres now a days. Light can be assumed to be along a curved path as if we see that light passes through curved optical fibre. But the reality is not so. With the idea of gravitational lens, of course, light can go along a curved path.
If a concave lens is thick then the light will diverge more or less?
The thicker the lance, the more light diverges.
Contraction of the ciliary muscle causes the lens to bend the light less?
false
Does a lens heat up when light passes through it?
Typically a lens will heat up as light passes through it. No lens is perfectly transparent so some of the light energy will be reflected and some of it will be absorbed. The part that is absorbed will manifest as an increase in the temperature of the lens. The closer the lens is to being perfectly transparent to the wavelengths of the light passing through, the less it will heat up.
How does the lens in your eye change shape when you look at a nearby object then a distant object?
As an object gets farther from your eye, the focal length of the lens has to increase. The muscles around the lens stretch it so it has a less convex shape. But when you focus on a nearby object, these muscles make the lens more curved, causing the focal length to decrease.
What is the difference between dispersion and reflection?
Dispersion is when light is refracted inside a prism and all the colours are separated because red light refracts less than violet light. Reflection is when light hits an object and bounces back off it.
What happend to rays of light when they are refracted by a convex lens?
Now suppose that the rays of light are traveling through the focal point on the way to the lens. These rays of light will refract when they enter the lens and refract when they leave the lens. As the light rays enter into the more dense lens material, they refract towards the normal; and as they exit into the less dense air, they refract away from the normal. These specific rays will exit the lens traveling parallel to the principal axis.
