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Saleh0003
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if we fix huge amount of mirrors on surfface of moon...can we obtain light on Earth during night ?
Yes.Saleh0003 said:if we fix huge amount of mirrors on surfface of moon...can we obtain light on Earth during night ?
coz...surface of moon is rough so it is not reflecting properly sunlight but with mirrors, we can obtain it at night which may plays an important role in food chainOmCheeto said:Yes.
But we already obtain light on Earth at night from the moon, without mirrors, so I'm wondering why you think that we might want more light at night.
The position of the moon with respect to the Earth is not fixed. At some times during the month, the moon is actually located on the opposite side of the Earth from the night side. What will you do with your mirrors then?Saleh0003 said:if we fix huge amount of mirrors on surfface of moon...can we obtain light on Earth during night ?
SteamKing said:The position of the moon with respect to the Earth is not fixed. At some times during the month, the moon is actually located on the opposite side of the Earth from the night side. What will you do with your mirrors then?
you are right but this is just supposition that if it happens can we obtain same light of sun as we obtain during day?
I suppose it would work, theoretically.Saleh0003 said:coz...surface of moon is rough so it is not reflecting properly sunlight but with mirrors, we can obtain it at night which may plays an important role in food chain
The biggest "selfie" mirror ever?SteamKing said:The position of the moon with respect to the Earth is not fixed. At some times during the month, the moon is actually located on the opposite side of the Earth from the night side. What will you do with your mirrors then?
yeah! As people have much craze of selfies these days ...so it will work in better way :)OmCheeto said:I suppose it would work, theoretically.
We discussed telescopes on the Moon, which is basically your idea on a smaller scale.The biggest "selfie" mirror ever?
Goodness! Why would you want to abolish nighttime? That would screw things up beyond all recognition...Saleh0003 said:you are right but this is just supposition that if it happens can we obtain same light of sun as we obtain during day?
lot of sins take place at night...Probably we achieve peace on Earth :)SteamKing said:Goodness! Why would you want to abolish nighttime? That would screw things up beyond all recognition...
Or as Black Sabbath put it: The moon is just the sun at nightSteamKing said:Goodness! Why would you want to abolish nighttime? That would screw things up beyond all recognition...
Yes, many nocturnal animals might go extinct.SteamKing said:Goodness! Why would you want to abolish nighttime? That would screw things up beyond all recognition...
Sin is a 24 hour a day business. I think that having no day/night would make things worse, not better.Saleh0003 said:lot of sins take place at night...Probably we achieve peace on Earth :)
I agree with you, day and night is a natural phenomena, if we broken up this, Life on Earth is to be broken,that will be horrible.OmCheeto said:Yes, many nocturnal animals might go extinct.
That would be a shame.
Sins? Like watching adult TV? Or even turning on the electric lights according to some religious varieties.Saleh0003 said:lot of sins take place at night...Probably we achieve peace on Earth :)
Lots of problems ran through my mind. This was one of them.Merlin3189 said:If we could significantly increase the amount of energy we receive from the sun, wouldn't that increase "global warming"?
mrspeedybob said:If we mirrored the moon we would get more heat, but less useful energy then we have now.
OmCheeto said:I believe it was @nsaspook that posted something about the current power level of moonlight being 400,000 times less than from the sun. (Very interesting experiment!) Increasing the albedo alone, by painting the moon white, would yield light that is about 40,000 times less than from the sun.
Saleh0003, the OP, mentioned in post #6 that he wanted it for food production.DaveC426913 said:The engineering solution to lighting the nightside of the Earth is not mirrors on the Moon but mirrors in orbit. There is quite a bit of literature about it.
It's much more feasible:
- much closer
- don't need to climb into and out of a moon's gravity well to visit/service
- in micro-g so structure can be gossamer-light
- reflection can subtend an arbitrarily large angle of the sky
- can be moved around as needed
- etc.
The question is: would we want to, and should we?
How Midnight Sun Affects The Environment
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Parts of Alaska such as the Tanana Valley between Fairbanks and Delta and the Matanuska Valley near Anchorage are famous for their production of gigantic vegetables. Among the largest vegetables have been a 138 pound cabbage from Wasilla, and 18.9-pound carrot from Palmer, and a 1,287 pound pumpkin from Nikiski on the Kenai Peninsula.
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Same thing we do with mirror arrays now. Make em tiltable.Anyway, it's still a far better option to put em in Earth orbit. Their location above the night side as well as their orientation to the Sun is built right in.Hasratbrar said:Mirrors will not work always as moon's position with respect to the Earth is not fixed
So what are you going to do with those mirrors then; p
Yes this option may work better than putting mirrors on moon from engineering point of viewDaveC426913 said:Same thing we do with mirror arrays now. Make em tiltable.Anyway, it's still a far better option to put em in Earth orbit. Their location above the night side as well as their orientation to the Sun is built right in.
OmCheeto said:Should we do it? IMHO, no. At least, not yet.
And since it's purpose is food production, I think we can rule out painting the moon.
In case, it could theorically be useful to concentrate those mirrors' light on collectors on Earth to get electric energy. Clearly those mirrors should be perfectly adjustable via Earth control. Not possible with actual technology, anyway.Saleh0003 said:if we fix huge amount of mirrors on surfface of moon...can we obtain light on Earth during night ?
Certainly I didn't mean to rotate the Moon too :-) We should be satisfied to have light for half of the time (= it's better than nothing).Neon said:If we did build mirrors on the moon, it must be rotated as the moon is not only at different points of view but also like like up and down from the earth.And that is why we don't get the beautiful lunar eclipse every month.:(
DaveC426913 said:...
Anyway, it's still a far better option to put em in Earth orbit. Their location above the night side as well as their orientation to the Sun is built right in.
The Man Who Turned Night Into Day
WRITTEN BY BRIAN MERCHANT
January 20, 2016 // 10:00 AM EST
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After years of development, in 1992, Syromyatnikov and his team launched the 88-pound Znamya-2 into space aboard a vessel called Progress M15, bound for the Mir space station as a secondary payload.
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As planned, on February 4, Znamya left Mir. When it found its orbit a safe distance away, the mirror successfully deployed. And, sure enough, it sent a five kilometer-wide beam of light back down to Earth. The beam swept through Europe, moving from the south of France to western Russia at a reported speed of eight kilometers per second. “Several” turned out to be an overstatement—its luminosity was equivalent to a single full moon’s. Unfortunately, excessive cloud cover prevented the effect from being seen much on land; as the BBC reported, some Europeans reported noticing a flash of light as it glanced by, but that was about it.
Still, the theory had proved correct, and the design was sound. Znamya was de-orbited after a few hours and burned up in the atmosphere above Canada upon reentry.
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