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Is it possible to creat a laser light with the center missing like in a "Life Saver"?? If the ruby lens was ground in such a way a hole would be right down the center.
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Opticly, sure. Why would you want to? So you can start a fourth thread about the pipeline to the sky?
[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]
[i]The glass is at 50% of capacity[/i]
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Possibly, who knows what might be discovered on the way?
How far could a powerfull one go into space if it was emmited from earth? What would happen to the air in the hole in the center?
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Unless you focus the beam extremely well the diameter of your laser tube would be considerably larger by the time it reaches space. You would also need a power supply suitable for driving the beam for prolonged periods of time. As to the inner portion of the light tube, would molecules not just pass through the walls, its only light after all.
Graeme
There was a young lady named Bright.
Whose speed was far faster than light;
She set out one day
in a relative way
And returned on the previous night.
--Arthur Buller--
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