Comment Re:visible from space (Score 1) 274
Do you know that Google Maps is not made of satellite images only?
Your house is visible on aerial photographies. This is not what is usually refered to as "visible from space".
Do you know that Google Maps is not made of satellite images only?
Your house is visible on aerial photographies. This is not what is usually refered to as "visible from space".
As the screen is very close to your face, you need an eyepiece. One for each eye.
Do US troops count as wildlife?
And US saved half of Europe from being Soviet.
"L'effet DCRI", of course.
This new translation was even proposed by a journalist during the 13:00 news flash this Sunday on France Inter, the main state-owned radio.
http://tech.slashdot.org/story/13/03/30/0312223/new-catalyst-allows-cheaper-hydrogen-production
In space no one can hear you boom.
"Han and Chewie at the controls of the Millennium Falcon [...] wouldn't see star lines stretching out past the ship during the jump to hyperspace, but would actually see a central disc of bright light."
George Lucas will need to re-edit again his movies with up-to-date CGI.
Counting PC screen at work plus TV screen at home, that represents easily 80% during the working week. Thanks to the week-end and holidays, that percentage drops.
Volume, hence mass if density is similar, hence gravity, is proportional with the cube of the radius. But gravity is also proportional with the inverse square of the distance from the center. Therefore gravity on a planet surface is proportional with its radius: R^3/R^2 = R.
By definition, a planet has cleared its orbit of other bodies of similar or larger size other than its own satellites.
With your definition Earth would not be a planet, because there are more than 8000 near-Earth asteroids.
What is the use in increasing the percentage of a free energy source converted into electricity?
The factor that matters is the panel production price, in watts per dollar. Along with life duration, total pollution during production, etc. But not watts per candela!
How do we justify the cost of putting a person on the moon?
If I remember well it was justified by a political competition, which is not very far from religion.
Do you take into account deaths caused by uranium extraction in Africa, where little caution is taken regarding nearby population? Do you take into account deaths that may be caused by nuclear waste during the next 100,000 years?
4% of a free energy is still infinite efficiency.
The true question is the same as for other solar cells : what are the production price and the total power output during the life span of these cells?
The moon is made of green cheese. -- John Heywood