Topic 19 Flashcards by Oliver Woodroffe | Brainscape

Q

What is light?

A

Transverse electormagnetic wave, characterised by frequency, period, wavelength and amplitude.

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Q

Equation to calculate a period

A

T = 1/ν

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Q

Equation to calculate frequency

A

ν = 1/T

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Q

What is a period?

A

The time between 2 waves

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Q

What is wavelength?

A

The distance between 2 peaks

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Q

What is Amplitude?

A

The maximum magnitude

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Q

Equation to calculate the speed of light.

A

C = λ/T

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Q

What is the intensity of light proportional to?

A

The amplitude squared (A²)

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Q

What is amplitude of light?

A

The displacement of light

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Q

What are sinusoidal waves?

A

Waves with sinus or cosinus function.

They repeat every 2π

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Q

What are waves that are in phase?

A

Where two waves peak simoultaneuosly

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Q

Give the order of the electromagnetic spectrum

A

X rays

UV

Visible

Infra-red

Microwaves

Radio Waves

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