Australian Screen

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Division of Radiophysics (1950)

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Moon echoes

This clip chosen to be G

Clip description

This clip explains how radio signals are sent to the moon and reflected back. It begins with exterior footage of the Radio Australia headquarters in Shepparton, Victoria where radio signals are sent to a receiving station at Hornsby, New South Wales. When the moon is in the aerial beam, the signals can be picked up a second time as an echo after travelling to the moon and back. A monitor displays the direct signals from the transmitter and their echoes from the moon.

Curator’s notes

A moon echo occurs when radio signals are reflected from the moon’s surface, allowing scientists to study what happens when radio waves pass out and back through the Earth’s atmosphere.

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australianscreen is produced by the National Film and Sound Archive. By using the website you agree to comply with the terms and conditions described elsewhere on this site. The NFSA may amend the 'Conditions of Use’ from time to time without notice.

All materials on the site, including but not limited to text, video clips, audio clips, designs, logos, illustrations and still images, are protected by the Copyright Laws of Australia and international conventions.

When you access australianscreen you agree that:

  • You may retrieve materials for information only.
  • You may download materials for your personal use or for non-commercial educational purposes, but you must not publish them elsewhere or redistribute clips in any way.
  • The National Film and Sound Archive’s permission must be sought to amend any information in the materials, unless otherwise stated in notices throughout the Site.

All other rights reserved.

ANY UNAUTHORISED USE OF MATERIAL ON THIS SITE MAY RESULT IN CIVIL AND CRIMINAL LIABILITY.

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