coule someone tell me something about color spectrum and how different colors are formed?

Answer 1

When light travels from air into glass (or any other transparent medium) it bends in direction. Similarly when it travels from glass back into air. Different colors of light bend more or less, depending on the color.

When white light passes through a prism, the spectrum of colors comes out the other side. If you take the resulting beam of colored light and pass it through another identical prism 'upside down' from the first prism, the multicolored light is recombined into white light.

But, if you take just one of the colors emerging from the first prism, and pass it through the second, the color does not change after passing through the second. This shows that the colors are in the light, and not added by the glass.

So white light is a mixture of all the colors of the spectrum. This was first shown by Isaac Newton in 1672.

Answer 2

The white light is a bundle of seven colours, viz. violet, indigo, blue, green, yellow, orange and red. For easy learning "VIBGYOR" can be remembered. the colour spectrum is formed by splitting colour components of the light. This can be done by using prism. In nature the rainbow is the best example, the tiny droplets of water act as prism.

Answer 3

All the colors are just waves of different lengths. Think of a coil spring stretched out to different lengths. The longer you stretch it apart, the 'redder' it gets, and the shorter you squeeze it together, the 'bluer' it gets.

Normally, the waves are emitted by a star or something, and they are one color or another, but when they are moving toward a gravity source (like another star or planet or black hole) they get shorter, bluer. When they are moving away from a gravity source (star planet or black hole) they get longer, redder.

That is how we can look at the colors of stars and determine whether they are moving toward us or away from us.

Answer 4

Apparently, everything around us - earth or space - are all related to one thing: Vibrations.
That's how we get different colours, because it vibrates at a different level.
Ghosts, apparently, can't be seen, because they vibrate at a different level.
Check this: Look at your fan when it's still, and you can see through it, but also the blades. Now, turn it on, and the blades disappear; you can see right through the fan:Vibration.

Answer 5

Honestly this is a very basic and treated very well in all physics text book. Go and read. If you dont understand something specific ask here. We can not read text books for you