Discovered more than a century ago, the electromagnetic spectrum is the basis on which our universe operates . Without it we wouldn’t be able to see, stars wouldn’t shine, and life would not exist. It is one of the most important principles that governs everything around us.
Read moreHow is the electromagnetic spectrum used in space?
Astronomers use the entire electromagnetic spectrum to observe a variety of things. Radio waves and microwaves – the longest wavelengths and lowest energies of light – are used to peer inside dense interstellar clouds and track the motion of cold, dark gas .
Read moreWhat electromagnetic frequency is harmful to humans?
Most mobile operators use from radiofrequency waves in the range up 300 MHz to 3 GHz that can be harmful for human health (1).
Read moreWhat causes electromagnetic frequency?
Electromagnetic radiation is produced whenever a charged particle, such as an electron, changes its velocity —i.e., whenever it is accelerated or decelerated. The energy of the electromagnetic radiation thus produced comes from the charged particle and is therefore lost by it.
Read moreDoes electromagnetic have frequency?
Electromagnetic radiation can be expressed in terms of energy, wavelength, or frequency . Frequency is measured in cycles per second, or Hertz. Wavelength is measured in meters.
Read moreWhat is electromagnetic frequency?
Frequency is the number of cycles of a wave to pass some point in a second . The units of frequency are thus cycles per second, or Hertz (Hz). Radio stations have frequencies. They are usually equal to the station number times 1,000,000 Hz.
Read moreWhat is the cause of magnetic field inside a human body?
The Human Nervous System works on electrical impulses produced in the nerves. These impulses arise because of electrical charge differences in the neurons . These ions and electrical charges produce weak currents in the human body. Even weak currents can produce a magnetic field.
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