What is the EM spectrum?

Answer 1

The electromagnetic (EM) spectrum is the entire range of frequencies that electromagnetic radiation can have. The EM spectrum is divided into sections based on the common characteristics that certain frequency ranges have. These sections are, in order from low to high frequency, radio waves, microwaves, infrared waves, visible light (which from low to high frequency is further divided into red, orange, yellow, green, blue, indigo, and violet), ultraviolet waves, X-rays, and gamma rays. You can think of the EM spectrum as an invisible rainbow with visible light being a small part of it. And, like a rainbow, the edges of the divided sections are blurry; i.e. there is no exact frequency where one can say, for example, that this wave is no longer an X-ray, but is instead a gamma ray.

it is waves of light in order of their wavelengths and frequencies

APEX: A chart of frequencies of light waves.

Answer 2

By analogy with the spectrum of visible light from violet to red, with colours ordered in increasing wavelength, the electromagnetic spectrum is the collection of all types of electromagnetic radiation ordered by increasing wavelength. EM radiation that we can

detect runs from ultra-long wavelength radio waves used to communicate with submarines, through long-wave, short-wave, VHF and UHF radio to microwaves, infra-red (heat radiation), visible light, UV, X-rays and gamma rays.

Answer 3

The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object.

Answer 4

The electromagnetic spectrum is a name given collectively to all frequencies of electromagnetic energy, based on a continuous scale of their frequency or wavelength, with higher frequences (shorter wavelengths) at one end of the scale and low frequencies (longer wavelengths) at the other. If you consider how a prism refracts visible light, you would have a section from this scale, for frequencies detectible by the human eye (roughly 400 to 700 nanometers). Electromagnetic force is carried by a particle (the photon) whose energy is a function of the frequency, with higher frequencies correlating to higher energies. Above the frequencies of visible light are ultraviolet light, x-rays and gamma rays; below it are infrared, microwave, and radio waves.

Answer 5

it is a range of different radiation with different wave length

Answer 6

The EM spectrum is the order of electromagnetic waves.