Wave nature of light Flashcards

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1
Q

Dispersion

A

separating out of the different wavelengths present in light

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2
Q

Recombination

A

second prism will recombine the constituents of white light to again form white light

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3
Q

Primary colours

A

Red, Green, Blue

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4
Q

Secondary colours

A

2 primary colours of equal intensity are mixed

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5
Q

Complementary colours

A

Primary and secondary colour = white

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6
Q

Electromagnetic spectrum

A

Act as a wave

C = F(lambda)

also known as electromagnetic radiation

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7
Q

UV light/radiation

A

Red - violet

cause some substances to fluoresce ( vaseline)
effects photographic light
causes sunburn, harmful to eyes, skin cancer
produces vitamin d in skin
can cause photoemission

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8
Q

Infrared light

A

longer than red therefore not visible
radiated heat
heat proportional to IR radiation
detected using blackened thermometer bulb

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9
Q

properties of IR

A

Pass through fog and mist
causes substances it falls on to heat up
Photograph in darkness

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