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In prism and listening to the radio

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Harvey Buckle

on 15 August 2017

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Transcript of In prism and listening to the radio

To know the nature of a prism and why it produces certain phenomena
To know the properties and uses of radio waves
WHat happens?
Light is refracted when it enters the prism, and each colour is refracted by a different amount. This means that the light leaving the prism is spread out into its different colours, a process called dispersion.
Radio waves
Radio waves have lower frequencies and longer wavelengths than microwaves. They are used to transmit television and radio programmes. Television uses higher frequencies than radio.
Turn to 326-7

Describe ANOTHER use of Radio waves
When was the first radio broadcast?

Why is the sky blue?
Light and prisms
White light is a mixture of many different colours, ROYGBIV. Each with a different frequency. White light can be split up into a spectrum of these colours using a prism, a triangular block of glass or Perspex.
In prism and listening to the radio
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