# What do we mean by the frequency of electromagnetic radiation?

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Frequency. So when we talk about light traveling in waves, we can also talk about frequency, or the number of wavelengths that pass a certain point in a given length of time. We usually measure this as the number of wavelength cycles that pass per second.

## What is the frequency of electromagnetic radiation?

The electromagnetic spectrum (EMS) is the general name given to the known range of electromagnetic radiation. Wavelengths increase from approximately 10-18 m to 100 km, and this corresponds to frequencies decreasing from 3 × 1026 Hz to 3 ×103 Hz.

Gamma-rays

## What is light frequency?

Light waves also come in many frequencies. The frequency is the number of waves that pass a point in space during any time interval, usually one second. … The frequency of visible light is referred to as color, and ranges from 430 trillion hertz, seen as red, to 750 trillion hertz, seen as violet.

## How are the wavelength and frequency of electromagnetic radiation related?

EM waves carry energy and transfer their energy upon interaction with matter. The energy associated with EM radiation is proportional to frequency and inversely proportional to wavelength. Thus, EM waves with shorter wavelengths have more energy.

## What frequency is harmful to humans?

The most restrictive limits on whole-body exposure are in the frequency range of 30-300 MHz where the human body absorbs RF energy most efficiently when the whole body is exposed.

## What are the 7 types of electromagnetic radiation?

The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

red

## What is the frequency of cosmic rays?

Cosmic rays Cosmic ray frequency =10 23 Hz m Cosmic ray =

Gamma rays

## What’s the meaning of frequency?

Frequency describes the number of waves that pass a fixed place in a given amount of time. So if the time it takes for a wave to pass is is 1/2 second, the frequency is 2 per second. … The hertz measurement, abbreviated Hz, is the number of waves that pass by per second.

## How do u find the frequency?

Frequency of a wave is given by the equations:

1. f=1T. where: f is the frequency of the wave in hertz. T is the period of the wave in seconds.
2. f=vλ where: f is the frequency of the wave in hertz. v is the velocity of the wave in meters per second. λ is the wavelength of the wave in meters. …
3. f=cλ

## What is the frequency of ultraviolet light?

Ultraviolet (UV) light falls in the range of the EM spectrum between visible light and X-rays. It has frequencies of about 8 × 1014 to 3 × 1016 cycles per second, or hertz (Hz), and wavelengths of about 380 nanometers (1.5 × 10−5 inches) to about 10 nm (4 × 10−7 inches).