Live data from Hacker News

What happens when you wring out a washcloth in space [video]

boingboing.net

81–90 of 113 posts

Re: What happens when you wring out a washcloth in space [video]

#81
post #64
post #36

A similar phenomenon makes it dangerous to sleep without proper ventilation: >It is important that crew accommodations be well ventilated; otherwise, astronauts can wake up oxygen-deprived and gasping for air, because a bubble of their own exhaled carbon dioxide has formed around their heads. http://en.wikipedia.org/wiki/International_Space_Station#Cre...

This sounds like the exact opposite of fan death.

Because it's real?

Re: What happens when you wring out a washcloth in space [video]

#82
post #19

Earlier quoted context omitted.

I was really suprised to see them in the original package. One would think they had applied some form of vacuum sealed pressured bag or something to minimize space, or had special designed wipes with material that’s light weight. I guess not everything up there is special space stuff. Some of it is just the same stuff as in the local Grocery store.

Reminds me of that famous anecdote where NASA invested a million in developing a pen that could write in zero G, while the Russians used a pencil.

A fictional anecdote, FWIW:

http://www.snopes.com/business/genius/spacepen.asp

Re: What happens when you wring out a washcloth in space [video]

#83
post #64

Earlier quoted context omitted.

This sounds like the exact opposite of fan death.

Because it's real?

The funny part is fans mix gases and prevent exactly the scenario they're accused of causing in fan death (assuming we're talking about asphyxiation and not hypothermia... the hypothermia concern is beyond ridiculous). I don't think I've ever even heard of fan death, but I checked and the issue I mentioned in the OP is actually discussed on the fan death wikipedia page.

Re: What happens when you wring out a washcloth in space [video]

#84
post #3

I thought just watching the microphone float in front of him was interesting enough. I was totally not prepared for the awesomeness of the wrung-out washcloth.

I always wonder, if you spend a length of time in space, you must get used to being able to leave an object in mid air, go do something, and go back and pick it up later.

When astronauts come back to earth, do they have some adjusting period where they keep dropping items on the floor because they forget about gravity?

Re: What happens when you wring out a washcloth in space [video]

#85
post #84
post #3

I thought just watching the microphone float in front of him was interesting enough. I was totally not prepared for the awesomeness of the wrung-out washcloth.

I always wonder, if you spend a length of time in space, you must get used to being able to leave an object in mid air, go do something, and go back and pick it up later. When astronauts come back to earth, do they have some adjusting period where they keep dropping items on the floor because they forget about gravity?

Every time I watch one of those videos, I imagine how annoying it must be to not be able to release something with zero drift.

If I'm ever allowed to be a space tourist, I suspect I'd spend hours just trying to get something to stop drifting relative to the cabin. And then play with water.

Re: What happens when you wring out a washcloth in space [video]

#86
What I love about Chris Hadfields updates are that he is entirely world centric. "400 thousand of us live here" in Countries on the other side of the world. Devoting time not only to Canada and the US but truly communicating the importance of "International" in the title of the ISS.

Re: What happens when you wring out a washcloth in space [video]

#87
post #49
post #48

Earlier quoted context omitted.

TV makeup is split into two types, 1) getting people looking good (same reason people wear makeup any time - but if you're being filmed, more people will see you, so you care more) 2) preventing the shine While it's true that the lighting often doesn't help, the biggest problem is that the lighting can produce a lot of heat, so it's actually the lights making people sweat, not just making sweat show up more. Not sure…

Alexandr Laveikin (cosmonaut) spent time on the Mir (Мир) spacestation in 1987. He said it was "very noisy, very hot." (This is from 'Packing for Mars' by Mary Roach) I guess heat conduction is difficult if your spacecraft is in a vacuum.

> I guess heat conduction is difficult if your spacecraft is in a vacuum.

Very much so. Search for "heat" in this SVG and you'll see the giant accordion radiators: http://upload.wikimedia.org/wikipedia/commons/a/aa/Iss027e03...

When the Space Shuttle was in orbit, it kept its giant bay doors open to expose its radiators.

If you'd like, I can dig up some extensive articlage written for hard sci-fi writers about dealing with heat for engines and for life support.

Re: What happens when you wring out a washcloth in space [video]

#88
post #72

Does anyone else here find it amazing that NASA paid to send a fullsize wireless microphone into space. Given the cost per kilogram of sending things into space, I'm surprised they didn't go with something much smaller/lighter.

Can you imagine a wired mic in zero g? Given how easily headphones etc tangle in gravity, I'd hate to see what they could do IN SPACE.

It doesn't even need to be a wired mic. There are lighter wireless mics available.

Re: What happens when you wring out a washcloth in space [video]

#89
post #71

Does anyone else here find it amazing that NASA paid to send a fullsize wireless microphone into space. Given the cost per kilogram of sending things into space, I'm surprised they didn't go with something much smaller/lighter.

I would feel wary sending anything smaller, lest it get stuck or lost in some nook somewhere and caused problems. Besides, part of CSA's mandate is to "advance the knowledge of space through science", and sending up cameras and microphones is well within that mandate. http://www.asc-csa.gc.ca/eng/about/mission.asp

I wasn't questioning the sending up of the microphone or video camera. I was just surprised they didn't send up something smaller/lighter. I kind of imagined there there are people who are tasked with "light weighting" everything that is sent on a launch mission so long as the lightweighting doesn't compromise on the engineering integrity of what is being sent into space.

Re: What happens when you wring out a washcloth in space [video]

#90
post #46

I did a talk yesterday with one of those headset radio mics, and all through that video I kept thinking "I want a floating microphone next time". No matter what you say, a floating microphone will hold the audience :-)

I wonder whether, after he returns to Earth, Cmdr Hadfield will expect things to hang in the air for him; looks habit-forming.

Just be careful if he hands you a beer...
Post reply on HN