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05-24-2014, 10:03 AM
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#41
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jun 2006
Posts: 12,880
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Good comments, but I'd like to find out whether the Barbara Walters thing is too weird and too wacky. And am I generally on the right track for a fiction book?
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Al
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05-24-2014, 10:10 AM
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#42
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jul 2008
Posts: 35,712
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Quote:
Originally Posted by scrinch
How about this? The plane only travels 12500 miles. The plane lifts off and slowly moves south at constant speed of just over 6 miles per hour, letting the earth spin beneath it 83 times before it touches down at the south pole!
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This would work, but must be done at a very high altitude outside of the atmosphere!
If the craft does not spin with the earth, it will have to fight an increasingly strong crosswind as it comes down from the pole. The earth circumference is roughly 25,000 miles, and as it spins 1 round/24 hr, that's 1,000 mi/hr wind at the equator if one does not want to go along with the earth's spin.
PS. One would need an anti-gravity machine to be able to hover or move very slowly (in inertial space) at high altitudes. Outside of the atmosphere, an air machine like helicopters does not work, and something like a satellite or a shuttle has to move very fast in order to stay at orbital altitudes.
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"Old age is the most unexpected of all things that happen to a man" -- Leon Trotsky (1879-1940)
"Those Who Can Make You Believe Absurdities Can Make You Commit Atrocities" - Voltaire (1694-1778)
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05-24-2014, 05:38 PM
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#43
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Thinks s/he gets paid by the post
Join Date: Apr 2006
Location: North Bay
Posts: 1,246
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Well, as long as we're getting technical, I guess we'd have to count the miles traveled through space as the earth completed almost 1/4 of its circuit around the sun also.
Sent from my ADR6350 using Tapatalk 2
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05-24-2014, 05:46 PM
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#44
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jul 2008
Posts: 35,712
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Then, the problem is that we do not really have a reference frame to even talk about "absolute velocity" as such thing does not exist.
The sun and our own galaxy are also moving with respect to other galaxies. We have no absolute origin to measure from.
__________________
"Old age is the most unexpected of all things that happen to a man" -- Leon Trotsky (1879-1940)
"Those Who Can Make You Believe Absurdities Can Make You Commit Atrocities" - Voltaire (1694-1778)
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05-25-2014, 07:37 AM
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#45
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jul 2006
Location: Pacific latitude 20/49
Posts: 7,677
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Yes Al, I think you are on the right track. Because it is a work of fiction, you have license to change the details to make the piece entertaining.
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For the fun of it...Keith
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05-25-2014, 08:40 AM
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#46
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jun 2006
Posts: 12,880
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Quote:
Originally Posted by scrinch
Well, as long as we're getting technical, I guess we'd have to count the miles traveled through space as the earth completed almost 1/4 of its circuit around the sun also.
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Yesterday I rode my bike at 67,000 miles per hour.
__________________
Al
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05-26-2014, 09:44 AM
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#47
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Thinks s/he gets paid by the post
Join Date: Apr 2006
Location: North Bay
Posts: 1,246
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Quote:
Originally Posted by TromboneAl
Yesterday I rode my bike at 67,000 miles per hour.
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...and didn't even mess up your hair, I'll bet. 😁
Sent from my Nexus 7 using Tapatalk
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05-26-2014, 09:53 AM
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#48
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jul 2008
Posts: 35,712
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Quote:
Originally Posted by TromboneAl
Yesterday I rode my bike at 67,000 miles per hour.
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That's just the orbital speed of the earth around the sun. But the sun is moving at 490,000 miles/hr inside our galaxy, relative to other stars.
__________________
"Old age is the most unexpected of all things that happen to a man" -- Leon Trotsky (1879-1940)
"Those Who Can Make You Believe Absurdities Can Make You Commit Atrocities" - Voltaire (1694-1778)
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05-27-2014, 06:56 AM
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#49
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Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Join Date: Jul 2006
Location: Pacific latitude 20/49
Posts: 7,677
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According to Neil Tyson, this is how we get to pick up space debris from The Milky Way.
__________________
For the fun of it...Keith
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