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# 12 Types of Radio Waves

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Radio waves are wavelengths of electromagnetic radiation in the range 1 millimeter to 100,000 kilometers. All electromagnetic radiation with a wavelength longer than infrared light is considered a radio wave. Radio waves are naturally present in the solar system and on Planet Earth. They are also commonly used by technologies to transmit information. The following are common types of radio wave with examples.
In general, lower frequencies have better range but have less data capacity.
Although terms like "Tremendously High Frequency" sound quite dramatic, regular visible light is far higher frequency. Tremendously High Frequency is up to 3 THz and the frequency of visible light is about 400 to 790 THz. For this reason, the theoretical bandwidth capacity of fibre optics is far greater than any radio band used for wireless communications.
Ionizing radiation is far higher frequency than visible light or radio waves. For example, x-rays are 30 petahertz (PHz) to 30 exahertz (EHz).

## Frequencies vs Wavelength

A frequency indicates how often waves repeat. This is measured in hertz such as Hz, kHz, MHz, GHz and THz. A wavelength indicates the length of each wave. This is measured with metric lengths such as millimeter, meter and kilometer. There is a relationship between frequencies and wavelengths as follows.
 Frequency Wavelength 1 Hz 299792.5 Kilometers 1 kHz 299.8 Kilometers 1 MHz 299.8 Meters 1 GHz 299.8 Millimeters 1 THz 299.8 Micrometers
The table above is rounded to one decimal place.

## Frequencies

A hertz represents one cycle per second. This varies by wavelength and the speed of electromagnetic radiation. In a vacuum, electromagnetic radiation moves at the speed of light. The following units are used to represent hertz.
 Unit Cycles Per Second Hertz (Hz) 1 Kilohertz (kHz) 1,000 Megahertz (MHz) 1,000,000 Gigahertz (GHz) 1,000,000,000 Terahertz (THz) 1,000,000,000,000 Petahertz (PHz) 1,000,000,000,000,000 Exahertz (EHz) 1,000,000,000,000,000,000
The cycles per second of a frequency is directly related to how much information can be sent on that frequency. For example, you can send more information on a 1 GHz frequency that an 1 MHz frequency.

## Allocations

Each nation regulates the use of radio waves by dividing the radio spectrum into regions that are assigned to a purpose or entity. This is unbelievably complex as these aren't standardized from one country to the next and can change with time.

## Science

This is the complete list of articles we have written about science.
Animals
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Falsifiability
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Inertia
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Nature vs Nurture
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## Electromagnetic Spectrum

An overview of the common wavelengths of the electromagnetic spectrum.

## Cold Things

An a-z list of cold things.

## Physical Properties

An a-z list of physical properties with basic explanations of each.

## Science

A list of sciences.

## Mohs Scale

A list of materials ranked by mohs hardness.

## Infinity

The definition of infinity with examples.

## Rationalism

The definition of rationalism with examples.

## Sound

An overview of the characteristics and properties of sound.

## Words To Describe Science

A vocabulary for describing science, research and scientific knowledge.

## Moon

Everything you ever wanted to know about the moon.

## Life

An overview of life with examples.

## Hypothesis Types

The common types of hypothesis with examples.
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## New Articles

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