white
The surface of a radio telescope doesn't have to be as flawless as the surface of an optical telescope because the radio telescope is collecting radio waves, something that will not be affected by faults in the glass. Optical telescopes, on the other hand, are collecting light, where faults in the surface can interfere with the image.
PITS
newton
Yes, but the reflective surface may cause odd behaviors.
It is a spiral layout
red
No. It's straight through the center of the sphere that the curved surface is part of.
An optical, and an electron microscope.
A rainbow is an optical and meteorological phenomenon caused by the refraction and dispersion of light through water droplets in the atmosphere. The back of a rainbow is not a physical object or surface, but rather an illusion created by the way light interacts with water droplets in the sky.
Jet black is the darkest colour. Not sure what is meant by surface?
A red sandy color.
No, "colour" is not a verb. It is a noun that refers to the characteristic of an object or surface due to the way it reflects or emits light. The verb form of "colour" is "to colour," which means to add colour to something.