The fundamental source of electromagnetic radiation is the vibrational interaction between an electric field and a magnetic field. This phenomena is driven by the motion of electrically induced particles propagating thro... More »

The spectrum of electromagnetic radiation is comprised of waves or particles that carry different amounts of energy. The visible spectrum is what humans and most animals see. The least energetic range of electromagnetic ... More »

Electromagnetic waves can travel and transport energy without a medium through which it may travel. This contrasts with mechanical waves, such as sound waves, which cannot travel through a vacuum. If electromagnetic radi... More »

To reduce the dose of ionizing radiation absorbed from electromagnetic radiation, it is important to minimize the time exposed, be as far as possible from the source and take shelter behind an adequate shield. These thre... More »

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Electromagnetic radiation is energy that comes from a wide variety of sources. It comes in a broad spectrum of wavelengths, frequencies and energies. Scientists break the electromagnetic spectrum into several different c... More »

The spectrum of electromagnetic radiation is comprised of waves or particles that carry different amounts of energy. The visible spectrum is what humans and most animals see. The least energetic range of electromagnetic ... More »

Common electromagnetic devices include tape recorders, loudspeakers, maglev trains and electric motors. Other common devices are electromagnetic locks, doorbells and magnets used to pick up metal scrap. More »