Electromagnetic Spectrum Flashcards

Radio & TV

Source -Electrical circuits

Application - Signals for radio and TV, communications

Detector - Aerial

Microwaves

Source - Circuits and microwave ovens

Application - Communications with satellites ,mobile phones, heating food rapidly

Detector - Aerial 

Infrared

Source - Electric circuits, hot or warm objects, the Sun

Application - night vision, tv remote control

Detector - Heat sensitive paper, electronic detector, photodiode, thermistor 

Visible light

Source - Lamps, LEDs, lasers, the Sun

Application - Sight, photography

Detector - the retina of the eye, photographic film, electronic sensors

Ultraviolet

Source - The Sun, gas discharge lamps

Application - Treat skin conditions such as jaundice, detecting UV inks

Detector - Causes some materials to fluoresce (glow in the dark) and photographic film

X-rays

Source - High speed electrons on a metal surface

Application - A way to see inside the human body

Detector - photographic film

Gamma

Source - Radioactive nuclei decaying 

Application - Sterilising medical equipments, killing cancer

Detector - Photographic film, GM tube