The Electromagnetic Spectrum (EMS)

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Presentation transcript:

The Electromagnetic Spectrum (EMS) Notes 3-12-08 Entry 4

The Electromagnetic Spectrum (EMS) EMS- name for the range of waves when placed in order of increasing frequency.

Mnemonic Device for the order... Respucia’s =Radio Mom =Micro Is =Infrared Very =Visible Light Ugly =Ultraviolet Xcept when =X-rays Giggling =Gamma Rays

Radio Waves (LLL) Long Wavelength, Low Freq, Low Nrg. Radio signal TV signal

Micro Waves Microwave Ovens Cell Phones Radar MRI

Infrared Waves Energy is felt as heat. Toaster, Stove top, Hair Dryers. Used in cameras/scopes for night vision.

Visible Light ROY G BIV= Red, orange, yellow, green, blue, violet

Ultraviolet Kills bacteria in hospitals. Makes Vitamin D in the body= strong bones and teeth. Too much = skin cancer and damage eyes.

X-rays Pass through human tissue to take photos of bones. Dark areas show cracks or cavities.

Gamma Rays (HHS) High Nrg, High Freq. Short wavelength. Can go through objects the easiest of all waves. Treatment for cancer Too much=serious illness