FAQ

What is electromagnetic radiation composed of?

What is electromagnetic radiation composed of?

Electromagnetic radiation consists essentially of two wave motions, one magnetic and one electric at right angles to one another.

What is electromagnetic radiation explain?

Electromagnetic radiation is an electric and magnetic disturbance traveling through space at the speed of light (2.998 × 108 m/s). Examples of EM radiation include radio waves and microwaves, as well as infrared, ultraviolet, gamma, and x-rays.

What are two components of electromagnetic radiation?

Electromagnetic waves have two components: an oscillating electric field and a perpendicular, comoving magnetic field which oscillates at the same frequency, but with a phase shifted by 90°. They describe the movement of a packet of energy between two points.

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What are the properties of electromagnetic radiation?

Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f), wavelength (λ), or photon energy (E). The spectrum can be ordered according to frequency or wavelength.

Which of the electromagnetic radiation is radioactive?

A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively. Gamma rays, X-rays and the higher energy range of ultraviolet light constitute the ionizing part of the electromagnetic spectrum.

Why is electromagnetic radiation called electromagnetic?

Electromagnetic waves are produced by the motion of electrically charged particles. These waves are also called “electromagnetic radiation” because they radiate from the electrically charged particles. They travel through empty space as well as through air and other substances.

What is the fundamental source of electromagnetic radiation?

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The fundamental source of electromagnetic radiation is oscillating electric charges, which emit oscillating electric and magnetic fields.

What is the difference between electromagnetic radiation and nuclear radiation?

Nuclear radiation is emitted only in nuclear reactions but electromagnetic radiation can be emitted in any situation. Nuclear radiation mainly consists of gamma rays and other high-energy electromagnetic rays as well as small particles such as electrons and neutrinos. Electromagnetic radiation only consists of photons.

How is particle radiation produced?

Particle radiation can be emitted by an unstable atomic nucleus (via radioactive decay), or it can be produced from some other kind of nuclear reaction. Many types of particles may be emitted: high-speed electrons that are not from the beta decay process, but others such as internal conversion and Auger effect.

What are properties of electromagnetic radiation?

What are the different types of electromagnetic radiation?

There are 7 types of electromagnetic radiation which are given in the list below: Light. Infrared radiation. Microwaves radiations. X-rays. Ultraviolet radiations. Radiowaves . Gamma rays.

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What are the harmful effects of electromagnetic radiation?

Salivary Gland Cancer. An Israeli study reports that people who used cell phones for 22 hours a month or more were 50 percent more likely to develop parotid gland cancer

  • Brain Tumour.
  • Lymphatic Cancer and Bone Marrow Cancer.
  • Miscarriage.
  • Suicide.
  • What does electromagnetic radiation do to the human body?

    Key points A wide range of environmental influences causes biological effects. At low frequencies, external electric and magnetic fields induce small circulating currents within the body. The main effect of radiofrequency electromagnetic fields is heating of body tissues.

    What exactly is electromagnetic radiation?

    Electromagnetic radiation is an electric and magnetic disturbance traveling through space at the speed of light (2.998 × 108 m/s). It contains neither mass nor charge but travels in packets of radiant energy called photons, or quanta.