Ultraviolet (UV) Radiation

Ultraviolet (UV) Radiation

Ultraviolet (UV) Radiation These two photographs of a flower show how the evening primrose looks in two different wavelengths. The upper panel shows the flower as humans see it in visible light. The lower panel shows the primrose in UV, and reveals the “honey guides” (the dark areas) invisible to ...

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Visible Light

Visible Light

Visible Light Visible light is one way energy uses to get around. Light waves are the result of vibrations of electric and magnetic fields, and are thus a form of electromagnetic (EM) radiation. Visible light is just one of many types of EM radiation, and occupies a very small range of ...

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Infrared (IR) Radiation

Infrared (IR) Radiation Infrared (IR) radiation is a type of electromagnetic radiation. Infrared “light” has a longer wavelength than visible light. Red light has a longer wavelength than other colors of light, and infrared has even longer waves than red does; so infrared is sort of “redder-than-red” light or “beyond red” light. We cannot ...

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Radio Waves

Radio Waves

Radio Waves Radio waves are a type of electromagnetic radiation. A radio wave has a much longer wavelength than does visible light. We use radio wave,s extensively for communications. Radio waves have wavelengths as short as a few millimeters (tenths of inches) and as long as hundreds of kilometers (hundreds of miles). Visible light, for ...

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The Electromagnetic Spectrum

The Electromagnetic Spectrum

The Electromagnetic Spectrum Electromagnetic Spectrum Light is a form of electromagnetic radiation that is very familiar to us. However, there are several other forms of electromagnetic (EM) radiation, such as X-rays, radio waves, and ultraviolet and infrared “light”. Together, these different types of EM radiation make up the electromagnetic spectrum. Each section ...

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Electromagnetic Radiation

Electromagnetic Radiation

Electromagnetic Radiation Electromagnetic radiation is the result of oscillating electric and magnetic fields. The wave of energy generated by such vibrations moves through space at the speed of light. And well it should… for visible light is indeed one form of electromagnetic (EM) radiation. X-rays, radio waves, gamma rays, and infrared and ultraviolet “light” are the other main ...

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Basic Facts About Bounce Motion

Basic Facts About Bounce Motion

Basic Facts About Bounce Motion Bounce Motion Some particles do move along the field lines of the Earth. The crowded magnetic field lines near the poles cause particles to “reflect” and move back the same direction the from which they came. They bounce back and forth from one pole of ...

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Basic Facts About Spiral Motion

Basic Facts About Spiral Motion

Basic Facts About Spiral Motion Spiral Motion Protons and electrons can’t move across magnetic field lines very easily. So sometimes these particles are are forced to spiral around them. Electrons cirle the field line in one direction, protons in the opposite direction.  

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Generating a Magnetic Field

Generating a Magnetic Field

Generating a Magnetic Field Generating a Magnetic Field Scientists think, although not certain, there are two essential ingredients for generating a magnetic field. Those two ingredients are magnetic material currents A bar of iron can be made into a magnet by wrapping it with wires and running a current through the wires. ...

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