On 23 Jul, 11:08, "J. Chisholm" wrote:
I suspect something like a linear 'sunpipe' would be quite effective
see:http://www.sunpipe.co.uk

Like that, but on a much much larger scale. The bottom of the sunpipe
will look like this:

http://www.crossrail.co.uk/pages/pad...alisation.html

That opening at the top of the picture will run the length of the
platforms and extend all the way up to ground level. Presumably
they've done the modeling to prove this will actually work.

U

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