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Author Topic: Space  (Read 1158 times)

Offline Chairboy

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« Reply #45 on: November 04, 2005, 07:41:14 PM »
Quote
Originally posted by g00b
I really need to stop replying to this thread.
Yes, but not for the reasons you think.
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Offline Debonair

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« Reply #46 on: November 04, 2005, 10:53:03 PM »
Quote
Originally posted by g00b
You do not feel inertia in space. Only acceleration.


If you were sitting in the ISS on a couch reading this thread, instead of getting up & making yourself dinner, you would be feeling inertia.
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Offline Thrawn

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« Reply #47 on: November 05, 2005, 01:10:46 AM »
"You do not feel inertia in space. Only acceleration."


Tie yourself to the ISS put a relatively massive block of stuff in freefall beside you.

Push on it, feel that resistance to movement?  That's inertia.
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Offline bozon

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« Reply #48 on: November 05, 2005, 03:20:56 AM »
Quote
Originally posted by Gh0stFT
its still beyound me why they dont build rotating space stations,
like "von Braun" suggested, to avoid the problems Humans get
while in space with zero Gravity, and we are now in 2005...

What most people ignore are some funny consequance of living in such a station. If you stay put then everything is fine and you feel earth-like gravity. Now, if you start walking and pick up some speed, you start feeling couriolis forces.

The interesting implication is that going one way around the station you'd feel stronger gravity and walking the other direction you'd feel lower gravity. If you walk fast enough in the direction opposite to the station rotation, you feel zero gravity...
If you have to carry a heavy 50 kg sack, just pick it up and start running in the right direction - it will get lighter and lighter till you can hold it on one finger. At that point you can lift both you feet off the floor and "fly" along the station.
This is because for an outside stationary viewer, you are hovering in one location while the station is rotating around you.
Stopping once you got to where you wanted might be a little tricky.

Bozon
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Offline Gh0stFT

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« Reply #49 on: November 05, 2005, 07:20:20 AM »
Bozon where did you get that Info from? first time i heard about this.

Very interesting, but i dont buy it right now ;)
But if its for real, i dont see a problem, just move in the right direction
and you would feel the G's like one earth, sitting is no problem at all
like you said. This could work, no?
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Offline AWMac

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« Reply #50 on: November 05, 2005, 07:20:53 AM »
SPACE THE FINAL FRONTIER. THESE ARE THE VOYAGES OF THE STARSHIP ENTERPRISE, Dammit Sulu stop it, tha hurt Fk'r HER FIVE-YEAR MISSION TO EXPLORE STRANGE NEW WORLDS, Dammit Sulu...TO SEEK OUT NEW LIFE AND NEW CIVILIZATION, TO BOLDLY GO WHERE NO MAN HAS GONE BEFORE." Dammit Sulu that's it... Scotty Beam this Fk'r down!!!  

Doc:  Dammit Jim he's dead!

Jim:   Dead? Scotty is Dead?

Doc: Yes, Dead Jim.

Jim: Sooooo who's beaming us down and back again?
Dammit Sulu knock it off, I swear you do that again I'll cut you...

Capt Kirk: Spock report....

Spock:  In Captain...

Capt Kirk: And have you anything to..dammit Sulu stoppit!!! Spock meet me at the sick bay, Doc too... dammit let me go Sulu...

Now is when Nash rushes in and protects Sulu, swears that Jim killed Scotty and Spock is really CanaDUHian.

Frikken Liberals!


:D

Mac
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Offline GrimCO

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« Reply #51 on: November 05, 2005, 10:33:52 AM »
Actually, space is not a "zero gravity" environment...  Gravity is the weakest of the 4 fundamental forces, but it is the farthest acting. Astronauts in orbit experience a zero gravity environment because their spacecraft is contiuously "falling" toward the earth. It's the same as becoming weightless on a rollercoaster when it goes downward. What prevents them from spiralling to their death is their forward velocity. Essentially, a spacecraft in orbit achieves an outward velocity equal to it's rate of descent. Because an object in motion tends to stay in motion, the astronauts inside are going forward while their spacecraft is falling away from them continuously.

If they are floating around and the spacecraft changes direction or velocity, they will feel "G" forces as soon as they come into contact with an inside surface of the spacecraft. If they are strapped into a seat at the time, they will feel "G" forces immediately.
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Offline Chairboy

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« Reply #52 on: November 05, 2005, 10:52:34 AM »
Exactly.  

Watch out, though, gOOb might show up and try telling you how you're wrong because you'd be 'feeling inertia' or somesuch claptrap.
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Offline Tuomio

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« Reply #53 on: November 05, 2005, 10:56:45 AM »
Quote
Originally posted by bozon
What most people ignore are some funny consequance of living in such a station. If you stay put then everything is fine and you feel earth-like gravity. Now, if you start walking and pick up some speed, you start feeling couriolis forces.

The interesting implication is that going one way around the station you'd feel stronger gravity and walking the other direction you'd feel lower gravity. If you walk fast enough in the direction opposite to the station rotation, you feel zero gravity...
If you have to carry a heavy 50 kg sack, just pick it up and start running in the right direction - it will get lighter and lighter till you can hold it on one finger. At that point you can lift both you feet off the floor and "fly" along the station.
This is because for an outside stationary viewer, you are hovering in one location while the station is rotating around you.
Stopping once you got to where you wanted might be a little tricky.

Bozon


With feet you aint gonna do that.

Driving car inside the centrifuge would prove different results. You would still have to constantly overcome the air rushing against the car, so status quo, the weightlessness would be maintained only as long as you can insert opposite amount of energy. Also the energy equilibrium has to be kept in mind. More weight you would have initially, more energy would be required to reach the speed between floor and you equal to the spin.
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Offline GrimCO

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« Reply #54 on: November 05, 2005, 11:07:12 AM »
Maybe if schools would quit incorrectly teaching that gravity is an "invisible attractive force" instead of the bending of space, people would better understand it. After all, thanks to Einstein, we've known what it really is for about 100 years now.
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Offline Wolfala

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« Reply #55 on: November 05, 2005, 03:35:21 PM »
You guys might want to refer to this fourm for responses that are way above my paygrade.

http://orbit.m6.net/v2/forum.asp?forumid=6
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