# What is frequency electromagnetic spectrum?

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electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. … The electromagnetic spectrum comprises the span of all electromagnetic radiation and consists of many subranges, commonly referred to as portions, such as visible light or ultraviolet radiation.

## What is electromagnetic frequency?

Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz. Visible light makes up just a small part of the full electromagnetic spectrum.

The EM spectrum.

Type of Radiation Frequency Range (Hz) Wavelength Range
visible 4 – 7.5*1014 750 nm – 400 nm
near-infrared 1*1014 – 4*1014 2.5 μm – 750 nm

## Do electromagnetic waves have frequencies?

They have have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths from 1 millimeter to 100 kilometers. Like all other electromagnetic waves, radio waves travel at the speed of light. … The range of frequencies and wavelengths is remarkable.

## What is high frequency electromagnetic spectrum?

High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).

## What is the highest frequency?

Gamma rays have the highest frequency in the electromagnetic spectrum. They have a frequency of the order of about 1020 to 1022 Hz.

## What are 7 electromagnetic waves?

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays. To tour the electromagnetic spectrum, follow the links below!

## How does radio frequency work?

Radio frequency waves (RF) are generated when an alternating current goes through a conductive material. … Frequency is measured in hertz (or cycles per second) and wavelength is measured in meters (or centimeters). Radio waves are electromagnetic waves and they travel at the speed of light in free space.

## What frequency is gamma?

Gamma rays have frequencies greater than about 10^19 cycles per second, or hertz (Hz), and wavelengths of less than 100 picometers (pm), or 4 x 10^9 inches. (A picometer is one-trillionth of a meter.)

## What is the relationship between wavelength and frequency?

Frequency and wavelength are inversely proportional to each other. The wave with the greatest frequency has the shortest wavelength. Twice the frequency means one-half the wavelength. For this reason, the wavelength ratio is the inverse of the frequency ratio.

## What is the difference between low and high frequency?

When we talk about sound, we talk in terms of high and low-frequency waves. … This measurement of cycles per second is expressed in Hertz (Hz), with a higher Hz representing higher frequency sound. Low-frequency sounds are 500 Hz or lower while high-frequency waves are above 2000 Hz.

## Which electromagnetic has the highest frequency?

Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.

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## What is the lowest frequency wave?

Radio waves have the lowest frequency.

## What is the highest frequency a human can hear?

Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)

## What color has the longest frequency?

Violet waves have the highest frequencies. Red waves have the longest wavelengths.