3 results found for physics

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00:33:00

Communication on Earth, using Cables and Satellites

by Colin Byfleet
Communication on Earth, using Cables and Satellites
for 11-14 and upwards,
Lectures | 11-14 and upwards | 15 years ago | 1933 views
Rating:

A brief look at the Physics behind sending signals along cables and via geostationary satellites. An experiment to measure the speed of an electrical pulse in a cable is described and the Physics of the orbits of communcations satellites is develope....

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00:25:00

Communication with Space Probes and beyond

by Colin Byfleet
Communication with Space Probes and beyond
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 6128 views
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The main problems associated with communicating with distant space probes like Voyager 1 are investigated. The role played by diffraction in limiting the amount of power receivable on Earth is discussed. The further problems of reaching a nearby st....

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00:05:00

Light

by Shalini Golla
Light
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 14 years ago | 1552 views
Rating:

Shalini Golla presents on the science behind light.

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