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Old 08-06-2016, 10:10 AM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
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Quote:
Originally Posted by skysurfer View Post

And why 1/5th of light speed in 4 minutes, why not (almost, e.g. 90%) full light speed in, say, 6 minutes ?
I think because it gets a long way away real quick - you only have a very limited opportunity to give it any propulsion, before beam spread with distance reduces the laser power received by the sail.
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