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This might sound strange, but instead of radio broadcasts, what about the possibility of doing broadcasts with bursts of light utilising lasers? I guess my tho
by froo 18y ago
This might sound strange, but instead of radio broadcasts, what about the possibility of doing broadcasts with bursts of light utilising lasers?
I guess my thought is based off the old idea that you could intercept data off a modem by reading its LED at some considerable distance - and just upscaling it with more powerful tech.
http://applied-math.org/optical_tempest.pdf http://applied-math.org/optical_tempest.pdf
I realise that it would be near impossible to have the Earth visually see the transmission on a consistent basis, so what about a satellite in earth's orbit that essentially matched the moon's orbit, creating some kind of relay station.
- gravitycop 18y agowhat about a satellite in earth's orbit that essentially matched the moon's orbit L1. http://en.wikipedia.org/wiki/Lagrangian_point http://en.wikipedia.org/wiki/Lagrangian_point
- ivankirigin 18y agodoesn't it also have to move? and isn't the point to make some progress in spacefaring?
- gravitycop 18y agoit would be near impossible to have the Earth visually see the transmission on a consistent basis How do you figure?
- jws 18y agoOr better yet, use a passive element on the moon side. There are optical reflectors up there from moon missions that people can bounce (large) earth based lasers off of. Imagine one of those with a single LCD film over it. You can then selectively polarize the reflected light at virtually zero power use. It won't be a fast bit rate, the LCD could to 100bps easily, but I wonder what the atmospheric scattering does to the wavefront.
- JabavuAdams 18y ago> I realise that it would be near impossible to have the Earth visually see the transmission on a consistent basis, so what about a satellite in earth's orbit that essentially matched the moon's orbit, creating some kind of relay station. Expensive.