rainbow
A collection of diamonds is typically referred to as a "parcel" or a "lot."
Cosmic rays.
Gamma Rays are the highest frequency waves. Lower than that are X-rays then Ultraviolet. Then visible light, infrared, microwave, and radio waves are the lowest frequency. Here is a link which gives more information http://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html
That time is called sunrise. It marks the beginning of the day when the sun's rays first appear over the horizon, illuminating the Earth as it rotates.
A large collection of tiny droplets of water on ice crystals is called frost. Frost forms when water vapor in the air condenses directly onto a surface as ice crystals. It is often seen on cold surfaces like windows or plants.
A collection of rays of light is called a beam or a ray bundle.
rainbow
A collection of rays is commonly referred to as a "pencil of rays." In geometrical optics, this term describes a group of rays that emanate from a single point or a common origin, often used to analyze light propagation and behavior in lenses and mirrors.
A group of rays is called a "bundle of rays." In optics, this term is often used to describe a collection of light rays that are traveling in similar directions, which can be relevant in the study of lenses, mirrors, and other optical systems. In other contexts, such as physics or geometry, a group of rays originating from a common point may also be referred to as a "fan of rays" or simply a "ray cluster."
The collection of wavelengths is called the electromagnetic spectrum. It includes all forms of electromagnetic radiation, from radio waves to gamma rays.
The electromagnetic spectrum.
Light rays coming in are called incident light rays.
they are called UV, or Ultraviolet rays.
At collection of stamps is refered to as a stamp collection. They are frequently kept in albums. Philately is the name for the study and collection of stamps.
The light rays that bounce back are called reflected light rays.
it is called a range of mountains
a collection of fish is called a school of fish