Cost differences
Yes. Imagine your window. Light passes through does it not.
Light beams CAN go through an object, but most of the time they are refracted if they do, meaning the light rays are bent. If you've seen the Pink Floyd album cover with the prism and rainbow coming out, you can see the light beam goes through the prism but the different types of light in the light beam are broken up in to the rainbow Light can't always go through an object, though. If you hold up a rock (like granite) to light, the light wont go through it, although it might go around the rock, called diffraction. Windows, TV screens, lenses, ice cubes, light bulbs, diamonds - all these work or look better because light can go through them.
It does not go through if it is opauqe
opaque.
can light go through a book .and why
it is strong and flexible and light also it does not rust
Depends on the "object" and the frequency of the "light." All light waves can go through SOME objects, and some are stopped by an object that others can go right through. Radio waves can easily go through walls, optical light waves can go through glass, UV light can be easily stopped by many objects but can go through some others, and x-rays and gamma rays go through a wide variety of objects.
postman are leally allowed to go through a red light
Cost differences
Yes. Imagine your window. Light passes through does it not.
the name of the hole that allows light to go through into your eye is: pupil
Find the light and go through there.
Light beams CAN go through an object, but most of the time they are refracted if they do, meaning the light rays are bent. If you've seen the Pink Floyd album cover with the prism and rainbow coming out, you can see the light beam goes through the prism but the different types of light in the light beam are broken up in to the rainbow Light can't always go through an object, though. If you hold up a rock (like granite) to light, the light wont go through it, although it might go around the rock, called diffraction. Windows, TV screens, lenses, ice cubes, light bulbs, diamonds - all these work or look better because light can go through them.
A vacuum.
Alluminum
It does not go through if it is opauqe