Electromagnetic radiation

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15 Terms

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Electromagnetic radiation

a range of electromagnetic waves consisting of oscillating electric and magnetic fields travelling at the speed of light.

<p>a range of electromagnetic waves consisting of oscillating electric and magnetic fields travelling at the speed of light.</p>
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electromagnetic spectrum

the range of frequencies of electromagnetic radiation, from high-energy gamma rays to low energy radio waves.

<p>the range of frequencies of electromagnetic radiation, from high-energy gamma rays to low energy radio waves.</p>
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electromagnetic wave

transverse electric and magnetic fields positioned at right angles to each other and travelling through empty space at the speed of light.

<p>transverse electric and magnetic fields positioned at right angles to each other and travelling through empty space at the speed of light.</p>
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frequency

the number of waves produced per second, measured in hertz (Hz).

<p>the number of waves produced per second, measured in hertz (Hz).</p>
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gamma rays

extremely high-energy electromagnetic radiation emitted by radioactive materials.

<p>extremely high-energy electromagnetic radiation emitted by radioactive materials.</p>
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infrared radiation

a band of the electromagnetic spectrum with energies just below that of visible light, detected by our skin as heat.

<p>a band of the electromagnetic spectrum with energies just below that of visible light, detected by our skin as heat.</p>
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transverse waves

a wave in which its particles vibrate at right angles to the direction of motion of the wave itself.

<p>a wave in which its particles vibrate at right angles to the direction of motion of the wave itself.</p>
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microwaves

electromagnetic radiation with wavelengths ranging from a fraction of a millimetre to tens of centimetres, used in communication and cooking.

<p>electromagnetic radiation with wavelengths ranging from a fraction of a millimetre to tens of centimetres, used in communication and cooking.</p>
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longitudinal wave

a wave in which the particles travel in the sane direction as the direction as that of the wave itself.

<p>a wave in which the particles travel in the sane direction as the direction as that of the wave itself.</p>
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radio waves

electromagnetic radiation with wavelengths ranging from hundreds of meters to tens of centimetres, used in communication.

<p>electromagnetic radiation with wavelengths ranging from hundreds of meters to tens of centimetres, used in communication.</p>
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ultraviolet (UV) light

a band of electromagnetic radiation with energies just above those of visible light, contained in sunlight.

<p>a band of electromagnetic radiation with energies just above those of visible light, contained in sunlight.</p>
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visible light

a band of electromagnetic radiation detected by our eyes.

<p>a band of electromagnetic radiation detected by our eyes.</p>
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wave motion

the transfer of energy without transferring matter.

<p>the transfer of energy without transferring matter.</p>
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wavelength

the distances between successive wave crests, measured in metres.

<p>the distances between successive wave crests, measured in metres.</p>
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x-rays

high-energy electromagnetic radiation that can penetrate materials.

<p>high-energy electromagnetic radiation that can penetrate materials.</p>