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Some kind of lens or a change in a substance: the surface of a pond, through a prism, through glass... all of these may refract light.
becomes more converging
It slows the light down
When it passes through optical centre.
Yes, best kind. (clear lets the light through)
the magnifying glass has a convex lens and it curves to magnify objects.
Some kind of lens or a change in a substance: the surface of a pond, through a prism, through glass... all of these may refract light.
becomes more converging
It slows the light down
The light refracts or bend .
Refraction
No it do not bend.
Opening of the lens diaphragm through which light passes
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.
objective lens system
sh@@ happens
As light enters the eye, it passes through the cornea and the lens and is eventually focused onto the retina.