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 Hint:Electromagnetic waves are also known as EM waves. These waves are not deviated by any electric or magnetic field. They can travel even in vacuum. Light waves are the most common example of Electromagnetic waves as it came to us from the Sun by travelling millions of kilometers in vacuum and are known to us as Visible Light Rays. Complete answer: Basically, there are 7 different types of Electromagnetic Wave, these are categorized by in terms of frequency and wavelength. These 7 types of waves are as follows: Radio Waves, Microwaves, Infrared, Visible, Ultraviolet, X-Ray, Gamma Rays. Radio waves have the longest wavelength and small frequency while the gamma rays have shortest wavelength and high frequency. The frequency and wavelength of these waves are as shown in figure. A special technique called spectroscopy is used to detect the region of these waves in terms of wavelength. Apart from frequency and wavelength these waves are also categorized in terms of energy and temperature. Gamma rays have the highest energy and radio waves have the lowest energy in the above spectrum. Some rays are also classified as ionizing rays as they have enough power to ionize the hydrogen atom; these waves are Gamma rays, X-Rays and High energy ultraviolet rays. Note:
Electromagnetic radiation is a type of energy that is all around us and takes many forms, such as radio waves, microwaves, X-rays and gamma-rays. Sunlight is also a form of electromagnetic energy, but visible light is only a small portion of the electromagnetic spectrum, which contains a broad range of wavelengths. When was electromagnetism discovered?People have known about electricity and magnetism since ancient times, but the concepts were not well understood until the 19th century, according to a history (opens in new tab) from physicist Gary Bedrosian of the Rensselaer Polytechnic Institute in Troy, New York. In 1873, Scottish physicist James Clerk Maxwell showed that the two phenomena were connected and developed a unified theory of electromagnetism, according to Live Science sister site Space.com (opens in new tab). The study of electromagnetism deals with how electrically charged particles interact with each other and with magnetic fields. Maxwell developed a set of formulas, called Maxwell's equations, to describe the different interactions of electricity and magnetism. Though there were initially 20 equations, Maxwell later simplified them to just four basic ones. In simple terms, these four equations state the following:
How is electromagnetism created?Electromagnetic radiation is created when a charged atomic particle, such as an electron, is accelerated by an electric field, causing it to move. The movement produces oscillating electric and magnetic fields, which travel at right angles to each other, according to an online physics and astronomy course from PhysLink.com (opens in new tab). The waves have certain characteristics, given as frequency, wavelength or energy. A wavelength is the distance between two consecutive peaks of a wave, according to the University Corporation for Atmospheric Research (UCAR) (opens in new tab). This distance is given in meters or fractions thereof. Frequency is the number of waves that form in a given length of time. It is usually measured as the number of wave cycles per second, or hertz (Hz). A short wavelength means that the frequency will be higher because one cycle can pass in a shorter amount of time. Similarly, a longer wavelength has a lower frequency because each cycle takes longer to complete. What are the parts of the electromagnetic spectrum?Electromagnetic radiation spans an enormous range of wavelengths and frequencies. This range is known as the electromagnetic spectrum, according to UCAR (opens in new tab). The electromagnetic 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) light, X-rays and gamma-rays. Radio wavesRadio waves are at the lowest range of the electromagnetic spectrum, with frequencies of up to about 30 billion hertz, or 30 gigahertz (GHz), and wavelengths greater than about 0.4 inch (10 millimeters). Radio is used primarily for communications, including voice, data and entertainment media. MicrowavesMicrowaves fall in the range of the electromagnetic spectrum between radio and IR. They have frequencies from about 3 GHz to 30 trillion hertz, or 30 terahertz (THz), and wavelengths of about 0.004 to 0.4 inch (0.1 to 10 mm). Microwaves are used for high-bandwidth communications and radar, as well as for a heat source for microwave ovens and industrial applications. InfraredInfrared is in the range of the electromagnetic spectrum between microwaves and visible light. IR has frequencies from about 30 to 400 THz and wavelengths of about 0.00003 to 0.004 inch (740 nanometers to 100 micrometers). IR light is invisible to human eyes, but we can feel it as heat if the intensity is sufficient. Visible lightVisible light is found in the middle of the electromagnetic spectrum, between IR and UV. It has frequencies of about 400 to 800 THz and wavelengths of about 0.000015 to 0.00003 inch (380 to 740 nanometers). More generally, visible light is defined as the wavelengths that are visible to most human eyes. UltravioletUltraviolet light is the range of the electromagnetic spectrum between visible light and X-rays. It has frequencies of about 8 × 1014 to 3 x 1016 Hz and wavelengths of about 0.0000004 to 0.000015 inch (10 to 380 nanometers). UV light is a component of sunlight, but it is invisible to the human eye. It has numerous medical and industrial applications, but it can damage living tissue. X-raysX-rays are roughly classified into two types: soft X-rays and hard X-rays. Soft X-rays make up the range of the electromagnetic spectrum between UV and gamma-rays. Soft X-rays have frequencies of about 3 × 1016 to 1018 Hz and wavelengths of about 4 × 10−7 to 4 × 10−8 inch (100 picometers to 10 nanometers). Hard X-rays occupy the same region of the electromagnetic spectrum as gamma-rays. The only difference between them is their source: X-rays are produced by accelerating electrons, while gamma-rays are produced by atomic nuclei. Gamma-raysGamma-rays are in the range of the spectrum above soft X-rays. Gamma-rays have frequencies greater than about 1018 Hz and wavelengths of less than 4 × 10−9 inch (100 picometers). Gamma radiation causes damage to living tissue, which makes it useful for killing cancer cells when applied in carefully measured doses to small regions. Uncontrolled exposure, though, is extremely dangerous to humans. This article was updated on March 17, 2022, by Live Science contributor Adam Mann. Additional resources
BibliographySutter, P. (2021, September 29). Who was James Clerk Maxwell? The greatest physicist you've probably never heard of. Space.com. https://www.space.com/who-was-james-clerk-maxwell-physicist (opens in new tab) University Corporation for Atmospheric Research, Center for Science Education. (2017). Electromagnetic (EM) spectrum. https://scied.ucar.edu/learning-zone/atmosphere/electromagnetic-spectrum (opens in new tab) University Corporation for Atmospheric Research, Center for Science Education. (2018). Wavelength. https://scied.ucar.edu/learning-zone/atmosphere/wavelength (opens in new tab) Walorski, P. (n.d.). Why is that electrons radiate electromagnetic energy when they are accelerated? PhysLink.com. Retrieved March 17, 2022, from https://www.physlink.com/education/askexperts/ae436.cfm (opens in new tab) Jim Lucas is a contributing writer for Live Science. He covers physics, astronomy and engineering. Jim graduated from Missouri State University, where he earned a bachelor of science degree in physics with minors in astronomy and technical writing. After graduation he worked at Los Alamos National Laboratory as a network systems administrator, a technical writer-editor and a nuclear security specialist. In addition to writing, he edits scientific journal articles in a variety of topical areas. With contributions from
Which among the 7 EM waves carry the highest energy?Gamma rays have the highest energies and shortest wavelengths on the electromagnetic spectrum.
What are the 7 types of electromagnetic waves in order of increasing frequency?The seven electromagnetic waves in increasing order of frequency and decreasing order of wavelength are:. Radio waves.. Microwaves.. Infrared radiation.. Visible light. 5 × 10 - 6 m t o 0 . 8 × 10 - 6 m.. Ultraviolet radiation.. X-rays.. Gamma rays.. What are the 7 types of electromagnetic waves and their sources?The entire electromagnetic spectrum, from the lowest to the highest frequency (longest to shortest wavelength), includes all radio waves (e.g., commercial radio and television, microwaves, radar), infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
Which of the 7 types of electromagnetic waves is the most important?Electromagnetic waves are classified according to their frequency. 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.
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7 types of electromagnetic waves from lowest to highest energy
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