Electromagnetic Spectrum The Electromagnetic (EM) Spectrum is just a name that scientists give a bunch of types of radiation when they want to talk about them as a group.Electromagnetic (EM) Spectrumradiation Electromagnetic Radiation is energy that does not require a medium. The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. electromagnetic radiation

Electromagnetic Waves Do not require a medium; Capable of transmitting its energy through a vacuum; Produced by the vibration of charged particles; Propagates by the oscillation of both the electric and magnetic fields which support one another As the electric field recedes, the magnetic field increases and vice versa

Electromagnetic Waves

300,000,000 meters in one second (3.0 x 10 8 m/s) Light from the sun reaches the earth in 8 minutes.

Only visible light Why can’t you see the others? –The waves are moving either too fast or too slow for your eyes to pick them up.

PICTURE TIME…WAVELENGTH AND FREQUENCY

Transverse waves that have some electrical and some magnetic properties.

What is a prism? A triangular shaped translucent object which reflects light

Wavelength R O Y G B I V Red longest Violet shortest

There are times when it is easier to understand light as a stream of particles or a RAY DUAL THEORY OF LIGHT NOT ALWAYS A WAVE

When light goes through a filter eliminating some of the waves

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Sunlight Radio Infrared Visible light Ultra Violet Television X-rays Gamma Rays Ocean

Radio Infrared Visible light X Rays Gamma Rays

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What is Visible light Shorter wavelengths and higher frequencies than infrared… Colors ROYGBIV

They are opposites. When the wavelength gets bigger, the frequency gets lower….

Electromagnetic Spectrum

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