That's between you, your "moon", and your fetishes, Squiggy.
If we're going to coat the moon in anything, let it be habitat domes so we can colonize.
Mirrors On The Moon
- Thread starter All Seeing Eye
- Start date
That's between you, your "moon", and your fetishes, Squiggy.
If we're going to coat the moon in anything, let it be habitat domes so we can colonize.
I enjoy nighttime too much. Even if this cover-the-moon-with-mirrors scheme had no effects on the environment or our ecosystems, I would hate having so little darkness in which to enjoy a good view of the stars, or just a break from the daylight. Granted, we would still get dark nights at every new moon, but once a month is not enough.
Squiggy-win?
Hey. Atleast if this were done the sales of black-out curtains and shades would go through the roof.
No, we should cover it in paper, just as Ella Fitzgerald says we should.
All Seeing Eye
Admiral
A very small one, maybe. But any asteroid of any significant size to be a risk to us would have too much mass and energy in it to be effected by this laser.
It would do nothing, except that during an eclipse, we could see up the Sun's skirt.
Joe, boo cocky
Or "Preparation H."
The heating effect you could get from a focussed array of mirrors could be powerful enough to vapourise the surface of an asteroid.
Use Stefan's law. power density == s . temperature ^ 4
The moon is 3475 km diameter = Disc area of 9.5 x 10^12 square metres. Solar radiation is about 1kW per square metre at this distance, meaning the lunar disc gets 9.5 x 10^15 watts.
Coating the moon in mirrors which focus sunlight on an asteroid 1 km diameter (785,000 square-metres disc area), we can use Stefan's law to estimate the temperature it would be heated to.
power density = 9.5e15 / 7.85e5 = 1.21e10 W/m^2
t^4 = power density / (5.67e-8) = 2.13e17
t = 21000 'C , which would rapidly vapourise the surface of the asteroid.
I'm not sure how quickly it would cut into the surface, or how much material would be lifted to give a useful deflection.
All Seeing Eye
Admiral
The heating effect you could get from a focussed array of mirrors could be powerful enough to vapourise the surface of an asteroid.
Use Stefan's law. power density == s . temperature ^ 4
The moon is 3475 km diameter = Disc area of 9.5 x 10^12 square metres. Solar radiation is about 1kW per square metre at this distance, meaning the lunar disc gets 9.5 x 10^15 watts.
Coating the moon in mirrors which focus sunlight on an asteroid 1 km diameter (785,000 square-metres disc area), we can use Stefan's law to estimate the temperature it would be heated to.
power density = 9.5e15 / 7.85e5 = 1.21e10 W/m^2
t^4 = power density / (5.67e-8) = 2.13e17
t = 21000 'C , which would rapidly vapourise the surface of the asteroid.
I'm not sure how quickly it would cut into the surface, or how much material would be lifted to give a useful deflection.
Were you genetically engineered before birth with DNA from the greatest scientific minds of the time?
It's basic school physics. If you got yourself a physics book like mine, you could do calculations like this yourself.
Here. This is mine. You can read it online on Googlebooks.
Now you go and read that, and come back to us a new man.
Here. This is mine. You can read it online on Googlebooks.
Now you go and read that, and come back to us a new man.
All Seeing Eye
Admiral
It's basic school physics. If you got yourself a physics book like mine, you could do calculations like this yourself.
Here. This is mine. You can read it online on Googlebooks.
Now you go and read that, and come back to us a new man.
I don't read books. They bore me, especially when calculations are involved.
All Seeing Eye
Admiral
I don't read books now. Back in school there wasn't really a choice. If I want to learn something now i'll watch a documentary.
It's basic school physics. If you got yourself a physics book like mine, you could do calculations like this yourself.
Here. This is mine. You can read it online on Googlebooks.
Now you go and read that, and come back to us a new man.
I don't read books. They bore me, especially when calculations are involved.
This explains so much.
A Star Drive? You're talking mighty big circles. Maybe some magnets could be used for artificial gravity...
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