Ladewig said:Ooooooo, ooooooo, I know, I know. Just look at the Bad Astronomy page. It has links to NASA and everything.
Agammamon said:Gee, maybe they used a crossbar to support it. And maybe its "flapping" only while the guys are fiddling with it and stops when they do.
You remain unconvinced, even though earth-bound astronomers routinely bounce lasers off the cubical ranging reflectors the Apollo astrounauts left up there? Gee, what WOULD it take to convince you?No Answers said:I remain unconvinced that we ever went to the moon. It could easily have been faked, and the US had enormous motives for faking it. Probably it will be achieved someday though.
PS there's no wind on the moon.
Any wave transmitted through the fabric would not depend on air for that transmission, in fact air would impede it. If you extend a rope along the ground, pick up one end and give it a shake do you think the wave you propogate down the rope depends on air? It doesn't.INRM said:
Also, how did they make it "flap" in the wind?
With no wind to resist the flag, the whole flag would turn uniformly, if the astronaut moved the flag, the end of the flag would move immediately with the rest of the flag becuase no air will prevent the flag from moving with the bar... in other words it wouldn't form a wave, it would all move at once.
Unless the flag was deflected downwards and sideways at the same time. I don't know
-INRM
garys_2k said:
You remain unconvinced, even though earth-bound astronomers routinely bounce lasers off the cubical ranging reflectors the Apollo astrounauts left up there? Gee, what WOULD it take to convince you?![]()
No Answers said:I remain unconvinced that we ever went to the moon. It could easily have been faked, and the US had enormous motives for faking it. Probably it will be achieved someday though.
PS there's no wind on the moon.
INRM said:
Also, how did they make it "flap" in the wind?
With no wind to resist the flag, the whole flag would turn uniformly, if the astronaut moved the flag, the end of the flag would move immediately with the rest of the flag becuase no air will prevent the flag from moving with the bar... in other words it wouldn't form a wave, it would all move at once.
Unless the flag was deflected downwards and sideways at the same time. I don't know
-INRM
rwguinn said:
Go out to your garage, workshop, or office. Find a rule/yardstick/meter stick, anything made of wood/plastic/steel, which is about 10 times as long as it is wide, and about 10 times as wide as it is thick. place one end on a table, and hold it down really well-or stick it in a vise. flick the other end, which is hanging off the table/out of the vise. Watch it go boooiiiinnnnggggg many times. Remove all air from the room, so it is in a vaccuum. do it again. you won't hear the boooiiiinnnnggggg, but you can see the end go up and down very fast. That is called free vibration (as opposed to forced vibration), and it will die down after a few cycles, just as the flag on the moon did when they whacked the pole with a hammer/space suit/fist getting it stuck in the ground.
RW
OK, against my better judgement, I can't help but ask, what would convince you?No Answers: I remain unconvinced that we ever went to the moon.
xouper said:OK, against my better judgement, I can't help but ask, what would convince you?
If you watch the clip, you will see dust thrown up by the wheels of the rover. The dust goes up in a perfect parabolic arc and falls back down to the surface. Again, the Moon isn't the Earth! If this were filmed on the Earth, which has air, the dust would have billowed up around the wheel and floated over the surface. This clearly does not happen in the video clips; the dust goes up and right back down. It's actually a beautiful demonstration of ballistic flight in a vacuum. Had NASA faked this shot, they would have had to have a whole set (which would have been very large) with all the air removed. We don't have this technology today!