Wikiversity:Help desk/archives/June 2008

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Viewing stars from the moon[edit source]

Aldrin Looks Back at Tranquility Base - GPN-2000-001102.jpg

How come this picture shows a black sky? Is it because the sun is out and it drowns out all the other light from all the stars, and then there is not enough atmosphere to show a blue sky? Something else? --Remi 05:54, 3 June 2008 (UTC)

This type of pic has been used by conspiracy theory advocates to "prove" that the Moon landing was faked. Of course, only idiots would forget the stars when filming a faked Moon landing. The real explanation is rather boring, that point objects like stars don't show up well with a close focus in a low resolution pic. If they used an infinite focus setting, the stars would show up better but the foreground would be blurry. The lack of atmosphere may also play a role, as Earth's atmosphere tends to make the stars look larger and blurrier than they look in space or on the Moon. StuRat 08:53, 3 June 2008 (UTC)

What are the key differences between Wikiversity and Wikibooks?[edit source]

... and where should I start a Free per article commentary project of the The Civil Code of the Russian Federation? (in russian) --Eugrus 13:54, 14 June 2008 (UTC)

Please see: Wikiversity:differences between Wikiversity and Wikibooks. --McCormack 13:56, 14 June 2008 (UTC)
But what is about my Free per article commentary project of the The Civil Code of the Russian Federation? (Civil code text + links on corresponding laws and court practice). It is a book by its' form (as a large law itself law is), but not actually. Are there any other law commentary projects at Wikimedia sites?
P.S. The project will be closely integrated with Russian Civil code text at Wikisource and Law Project at Russian Wikipedia --eugrus 14:10, 14 June 2008 (UTC)
A commentary on a code of civil law probably isn't suitable for Wikiversity. I'd suggest you try Wikibooks. --McCormack 14:26, 14 June 2008 (UTC)

can we convert power into signals ?[edit source]

this question was asked by User:Eeeismail (copied from here), ----Erkan Yilmaz uses the Wikiversity:Chat (try) 07:27, 22 June 2008 (UTC)

I'm not quite sure how to interpret the question, but the answer appears to be "yes" to any interpretation I can think of:
1) Can any source of power be used to generate some form of signal ? Yes, by converting the source of power to electricity and using that to send radio signals, for example.
2) Can signals be sent through electrical lines ? Yes, even at the same time as electricity is sent on those lines.
3) Can the power actually be the signal ? Yes, by varying amount of power in any medium, such as radio waves, you can also send a signal.
If you meant the question is some other way, please let us know. StuRat 10:40, 23 June 2008 (UTC)