Is this proof for wind on the moon?

[spillthebeans]

http://www.youtube.com/watch?v=e8fCxRQJS9M

[Race4Peace]

1. false;

they had to thread a wire through the flag to keep it up instead of hangin down as it would without wind.

besides, the moon has no atmosphere :dunce: doo-doo-doo

[spillthebeans]

2. No atmosphere?

Someone should tell him about the flag trick.



And what are the aliens breathing? Vacuum?

[Anarcho-Socialist]

3. ??

What?

[spillthebeans]

4. some sites don't allow hyperlinks

I should have checked before

[mainegreen]

5. Its proof of momentum.

:P

[spillthebeans]

6. You mean ?

p=m*v


if v=0 than p=0, or not?

[mainegreen]

7. V !=0 ! Those astronauts are moving that flagpole all around.

There's plenty of V.

[spillthebeans]

8. I mean at 40 secs of that clip

[mainegreen]

9. I see what your talking about, but I believe the flag has 2 stabalizing rods in it,

The top, which is the full length of the flag and the lower, which appears to be about 1/3-1/2 of the flag length. In fact, if you look at the last scene, notice the corner of the flag fold rather sharply, rather unlike it would behave in the wind and much like it would if momentum whipped allowed the tail end to continue moving and the rod prevented the first half (towards the pole) to move. At 40 seconds what you're seeing, if you look close, is the astronaut moving the lower rod. I believe the lower rod is not attached to the poll, but is there to add more weight, causing the flag to drape in a more visually pleasing manner, much like the lower rod in curtains does.

[spillthebeans]

10. I think there is only one rod

http://www.jsc.nasa.gov/history/flag/flag.htm

Two other major constraints were the weight of the assembly and the stowage space required. The team designed the entire assembly to be as lightweight as possible -- when completed it weighed only 9 pounds and 7 ounces. They reduced the size of the package by developing a two-part telescoping pole apparatus with a telescoping crossbar. It was also necessary to design a flagpole that could be easily assembled and deployed by astronauts wearing space suits. Space suits used for the lunar surface EVA were pressurized to approximately 3.7 pounds per square inch and, as a result, the amount of force that the astronauts could apply with their gloved hands was limited and their range of movement was restricted (Fig. 3).

Sketch of an astronaut's reach constraints. Fig. 3. - Astronaut Reach Constraints. (NASA Press Release 69-83K, p. 122)

A 3 x 5 ft. nylon flag, obtained through the government supply catalog, (footnote 10) was altered by sewing a hem along the top. The crossbar, hinged to the pole, went through this hem, and a loop sewn around the bottom of the flag secured it to the pole. An astronaut would unfurl the flag by extending the telescoping crossbar and by raising it first to a position just above 90 degrees. He then lowered it to a position perpendicular to the pole where a catch prevented the hinge from moving. The upper portion then slipped into the base portion of the flagpole, which had been driven into the ground using a lunar geological hammer. A red ring was painted around the base of the assembly 18 inches from the bottom to aid the astronauts in judging the distance that the pole had penetrated the surface. (footnote 11)
Finally, it was necessary to protect the flag during the descent portion of the lunar landing. To make the flag easily accessible during the EVA, it was mounted on the left-hand side of the ladder on the Lunar Module (LM) (fig. 4).

It seems it was just a loop... I don't know it seems still a bit puzzling to me

[mainegreen]

12. Also remember the moons gravity is ~1/5 that of earths.

Your brain is programmed to view movement based on earth standard norm gravity. Things moving in lesser gravities will appear to be moving to extremely or moving as if an invisible force is acting upon them (as compared to earth normal). The movement of that flag would actually be much harder to explain in either a vacuum on earth with earth norm gravity or in air.

[spillthebeans]

14. I thought about the 1/6 gravity, but it's somehow strange

to me that one small movement has such a big reaction and other small movements have not.

[TheBaldyMan]

11. no n/t

[Ptah]

13. No, it's not proof of wind on the moon.

At :40 the astronaut's hand moves up to the lower edge
of the flag,





causing the flag to 'fold' away from the viewer.