The military satellites use a blue/green or aquamarine color LASER beam to communicate with submerged submarines.
violet
Your question is meaningless. Light is electromagnetic radiation and the colour of light depends on the wavelength of this radiation. There is no such thing as a "weak" wavelength.
The colour blue is a name we give to a certain wavelength of electromagnetic radiation that our eyes are sensitive to. Electromagnetic radiation is not matter. The number 12 is an Idea. Ideas are not matter.
"Color" is a property for part of the electromagnetic spectrum. It doesn't make sense for other types of radiation, including gravitational waves.
"Color" is a way of describing how an object interacts with electromagnetic radiation in the visible region of the spectrum. This has no impact whatsoever on how it interacts with electromagnetic radiation in the microwave region of the spectrum. So, no, they don't.
star produce radiation and it is usually gamma which is deadly and it affects the color of the star
Photoelectric effect
verb - to illuminate, or to set afire adjective - not heavy, or of lower caloric content adjective - of a color that is less dark noun - illumination, or a source of illumination noun (physics) - radiation : any frequency of electromagnetic radiation within the visible range for human beings. This constitutes a comparatively small range of possible electromagnetic energies. -- Briefly, light or light(s) means: 1) Electromagnetic radiation of a visible frequency or wavelength 2) A source of illumination 3) A source of fire or to set fire 4) A comparative shade of color or hue 5) Laundry that is not dark in color
white light is not a single color..it is made up of 7 different colors which include red and blue and yes it is there in the electromagnetic spectrum between ultraviolet and infrared radiation
Electromagnetic interference. Remember that light is electromagnetic radiation. Radio waves are nothing more than a different "color" of light (albeit a color which is invisible to our human eyes).
Objects that are black in color are the most efficient emitters/absorbers of electromagnetic radiation. Heat is infrared (IR) electromagnetic radiation. If the black object is hotter than its surroundings (which a car radiator usually is) it acts as an emitter, if the black object is cooler than its surroundings it acts as an absorber. Thus a hot car radiator that is black will emit IR heat radiation more efficiently than ti would if it was any other color. Thus it will help keep the engine from overheating better than a radiator of any other color.
Not exactly. Different colors are different frequencies of light. "Spectrum", on the other hand, refers to an analysis of a mix of wavelengths.