Want this question answered?
it is because the view we are seeing the coin is from rarer to denser that is from air to water so the refractive index differs so the view we so the coin at the bottom of the cointer appears to be raised
due to refraction of light
refraction (beams on light bend in the water)
It's an optical illusion created by the bending of light though the water.
It is an optical illusion due to the fact that water is more dense than air and so slows the speed of light. When light travels from a less dense to a more dense material, it slows down and 'bends'.
This is due to the phenomenon of refraction. When the rays of light from the coin travel from denser medium to rarer medium, the refracted rays bend away from the normal. The point from which the refracted rays appear to come gives the apparent position of the coin. Since the rays appear to come from a point above the Coin, it appears to be raised.
it is because the view we are seeing the coin is from rarer to denser that is from air to water so the refractive index differs so the view we so the coin at the bottom of the cointer appears to be raised
due to refraction of light
because it is refracted.
refraction (beams on light bend in the water)
It's an optical illusion created by the bending of light though the water.
It is an optical illusion due to the fact that water is more dense than air and so slows the speed of light. When light travels from a less dense to a more dense material, it slows down and 'bends'.
You put the coin in a handkerchief over a glass of water. Then let someone hold the coin through the handkerchief. Then ask if anybody has a magic wand. If they don't. Next ask if anybody knows any magic words. Say the magic words and tell the person to drop the coin. Remove the handkerchief from over the glass of water. The coin should be gone. That is how I would do it. Oh I forgot one thing. When you put the coin in the handkerchief switch it with a clear glass disc.
Coins are not cylinders. The rim of the coin is sometimes raised, as well there are depressions and peaks from the design of the coin. You should use a specific gravity test with water and a scale.
Glass would be the insulator of the choices given. All the other items are metal (conductors) or water (minerals cause conductivity).
If you refer to a copper coin, simply place it in a measuring glass of water and work out the difference between the start and final volumes; that is the volume of the coin.
If you slowly move the cardboard the coin on top will move with the cardboard. Law of Inertia. There is not enough force to drop the coin into the water.