Search found 6 matches

by Quizzer
Sat Jun 05, 2010 5:33 am
Forum: The Library: Information Desk and Educational Resources
Topic: GRED Answer: Twirling pole paradox
Replies: 26
Views: 19083

Re: GRED Answer: Twirling pole paradox

Let me try... If the pole does not break, then it will stretch and seemingly be deformed into a spiral form. The end will move at some finite speed < c, depending on the pole rigidity. The momentum of turning the pole will move along the length of the pole with some finite speed < c (the speed of so...
by Quizzer
Thu Mar 11, 2010 9:51 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The ISS from Above (2010 Mar 03)
Replies: 116
Views: 21192

Re: APOD: The ISS from Above (2010 Mar 03)

I actually didn't look at the coordinates my tracker gave me, just looked at the map, noticed, south pacific, relatively south on my map (I blame bad map projection :wink:), picture shows white -> so it must be Antarctica. On closer inspection (ty Chris) I already concluded that it was too south for...
by Quizzer
Fri Mar 05, 2010 8:58 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The ISS from Above (2010 Mar 03)
Replies: 116
Views: 21192

Re: APOD: The ISS from Above (2010 Mar 03)

I'd vote for clouds and water. I see nothing in the image that looks like land, and nothing that looks all that much like ice. And at this time of year, the ISS shouldn't be over any sort of sea ice at all in the Southern Hemisphere. After re-examining the picture at 100%, I must con-cure, indeed, ...
by Quizzer
Fri Mar 05, 2010 11:39 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The ISS from Above (2010 Mar 03)
Replies: 116
Views: 21192

Re: APOD: The ISS from Above (2010 Mar 03)

what about the daytime in there? does it match with the picture? it seems it is dawn or dusk in the upper right region. I also checked that, for added confidence. The terminator is ahead about 30 minutes, so that would fit perfectly. I think you are right with dusk showing in the corners, especiall...
by Quizzer
Fri Mar 05, 2010 9:46 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The ISS from Above (2010 Mar 03)
Replies: 116
Views: 21192

Re: APOD: The ISS from Above (2010 Mar 03)

Aren't all the shores of Antarctica the "north shore"? <g> Hm, yah, good point :wink:. I don't think Antarctica is remotely visible from the ISS anywhere over the South Pacific. The only part of Antarctica that stands a chance of not being over the horizon from the ISS is the Antarctic Pe...
by Quizzer
Fri Mar 05, 2010 12:16 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The ISS from Above (2010 Mar 03)
Replies: 116
Views: 21192

Re: APOD: The ISS from Above (2010 Mar 03)

The picture is showing the south pacific and the north shore of Antarctica. Quite easy to find out: Here we find more pictures of the mission, including some more made after separation: http://commons.wikimedia.org/wiki/STS-130 One of the pictures includes this one: http://commons.wikimedia.org/wiki...