News tagged with radio
Radio
Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, or phase. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.
For more information about Radio, read the full article at
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Soviet find of water on the Moon in the 1970s ignored by the West
(Phys.org) -- In August 1976 Luna 24 landed on the moon and returned to Earth with samples of rocks, which were found to contain water, but this finding was ignored by scientists in the West.
Space & Earth / Space Exploration
Jun 01, 2012 |
4.7 / 5 (34) |
33
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ALMA turns its eyes to Centaurus A
(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...
May 31, 2012 |
4.9 / 5 (10) |
0
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Australia hails surprise super-telescope decision
Australia has hailed a surprise decision giving it a role in a radio telescope project aimed at revolutionising astronomy, vowing to draw on its decades of experience in space science.
May 26, 2012 |
5 / 5 (4) |
3
Splitting the SKA - why a dual-site setup is a win for everyone
The Square Kilometre Array (SKA) is a concept that's been slowly growing and evolving since 1991. But recently this ambitious project took a giant leap towards reality with the announcement of a SKA site decision.
Space & Earth / Space Exploration
May 28, 2012 |
5 / 5 (3) |
0
NASA lunar spacecraft GRAIL complete prime mission ahead of schedule
(Phys.org) -- A NASA mission to study the moon from crust to core has completed its prime mission earlier than expected. The team of NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission, with twin ...
Space & Earth / Space Exploration
May 29, 2012 |
5 / 5 (3) |
0
