Page 27 - form 5 physics chapter 1

X- rays x-ray tube • Medicine
i. X-ray photograph of the
Ultraviolet rays The sun, internal organs of the body,
mercury e.g to locate bone fracture.
vapour ii. Cancer treatment
lamp.
• Engineering – to detect cracks in
metal

• Checking of luggage at airports

• Cause sunburn

• Stimulates the formation of
vitamin D needed for assimilation
of calcium and the prevention of
rickets.

• Detect fake notes

• Fluorescent lamp

• Sterilization of surgical tools and
plant seedlings.

Visible light Flames, • Visual communication
lamps, • Photography
the sun • Photosynthesis

Infrared Hot objects • A sensation of warmth is felt
radiation such as when IR falls on the skin.
flames, the
Microwaves human • Thermal imaging and
body, the physiotherapy
Radio waves sun
• Infrared binoculars for night time
Radar vision. IR radiation emitted by a
transmitter living thing can be detected.
Microwaves
oven • Remote control for TV / VCR

Electrons • Communication system with
oscillating satellites
in aerials
Radio/ • Used in radar system
television • Cooking
• Cellular (mobile) phone service

• For broadcasting and wireless
communication

• UHF (ultra high frequency) radio
waves – television and hand
phones

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