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 .
What are the uses of the 7 electromagnetic waves?
- Radio waves. Radio waves are used for communication such as television and radio. ...
- Microwaves. Microwaves are used for cooking food and for satellite communications. ...
- Infrared. ...
- Visible light. ...
- Ultraviolet radiation.
What are the 7 types of electromagnetic spectrum?
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 many light waves are there?
From lowest energy to highest energy (red to blue) there are radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays. Each of them have their uses and, at the high energy end, they also have their dangers.
What are the 7 electromagnetic waves in order?
In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves .
What is the highest frequency color?
Violet waves have the highest frequencies.
What is the highest frequency?
The highest frequency colour, which is violet , also has the most energy when it comes to visible light. The lowest visible light frequency, which is red, has the least energy. There is more energy in higher-frequency waves. Gamma rays have the shortest wavelengths and highest frequencies of all electromagnetic waves.
What is the most important electromagnetic wave?
The different types of waves have different uses and functions in our everyday lives. The most important of these is visible light , which enables us to see. Radio waves have the longest wavelengths of all the electromagnetic waves. They range from around a foot long to several miles long.
How do humans detect light waves?
Using cells from the retinas of mice and people, and infrared lasers , the group found that when laser light pulses rapidly, light-sensing cells in the retina sometimes get a double hit of infrared energy. When that happens, the eye is able to detect light that falls outside the visible spectrum.
Which color of light carries the highest energy?
Your eyes detect electromagnetic waves that are roughly the size of a virus. Your brain interprets the various energies of visible light as different colors, ranging from red to violet . Red has the lowest energy and violet the highest.
What colors are in the light spectrum?
In the visible spectrum of light, the color of the light depends on the frequency. The visible spectrum is always the same for a rainbow or the separated light from a prism. The order of colors is red, orange, yellow, green, blue, indigo, and violet .
What is meant by spectrum of light?
The spectrum is the range of different colours which is produced when light passes through a glass prism or through a drop of water. A rainbow shows the colours in the spectrum.
Why is light an electromagnetic wave?
1. Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field . This changing magnetic field then creates a changing electric field and BOOM – you have light.
What are light waves called?
Light radiates from a source in waves. Each wave has two parts; an electric part, and a magnetic part. That’s why light is called Electromagnetic Radiation . ... The shortest wavelengths of the spectrum are the ultraviolet, x-ray, and gamma radiation. The visible portion is a very small part of the electromagnetic spectrum.
Which wave has the longest period?
The wave with a frequency of 6 Hz has the longest period. Period and frequency have an inverse relationship. thus, the wave with the lowest frequency has the longest period.
Are radio waves harmful?
It has been known for many years that exposure to very high levels of RF radiation can be harmful due to the ability of RF energy to heat biological tissue rapidly. ... Exposure to very high RF intensities can result in heating of biological tissue and an increase in body temperature.
