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Construction needs cloud flexibility
Australia’s embattled construction sector could benefit from cloud based information systems that can be switched on and off in lockstep with individual projects – with the exception of those organisations based in remote areas like the Kimberleys.
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Total lunar eclipse this coming weekend
David Heath
Sunday, 04 December 2011 22:14
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For the night-owls, look up in the northern sky a little after midnight on Sunday December 11th and the moon which ought to be blazing down will be strangely dim.
If you think about it, the Earth has a permanent shadow extending out into space on the opposite side from the Sun. Obviously, as the Earth is much smaller than the Sun, this shadow will taper out to a point some distance away.
However, at the distance the Moon is from the Earth, it fits quite neatly into the shadow, with a little room to spare.
Astute observers might notice that the shadow cone from the Moon comes close to a point at about the distance the Moon is from the Earth - which is why a solar eclipse (when the Moon comes between the Earth and the Sun) lasts for such a few brief minutes.
A lunar eclipse lasts much longer - generally close to an hour of totality (with a maximum possible of about 1:45 when everything lines up perfectly). Also unlike a solar eclipse, a lunar eclipse is visible from any part of the Earth from where the Moon may be seen.
Another point to contemplate is that a solar eclipse will frequently occur either 14 days before or after a lunar eclipse. This event is no different, following a recent partial solar eclipse on November 25th.
Read on for the exact times of the eclipse and when future eclipses will occur.
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