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... what will Neil's spirit level do in space?
Just turn yourself until the shelf is level, then use some superglue to make sure you stay that way..........
If you have a centrifugal capsule, then your level should work just fine.Otherwise... Just buy some of this in bulk....And it won't matter which side is up, and which side is down.
Just remember to buy a big can of spray contact adhesive to stick the one side to the wall/floor/roof.
The problem is that Up & Down are pretty arbitrary in the Space Ship (without artificial gravity).[attachment=15955]You can, of course, use your basic tape measure and square to make your shelf parallel to another surface. But... It is equally fine to velcro stuff to the bottom of your shelf as to the top of your shelf.
You seem to be suggesting that a shelf needs to be put up level. You may have inadvertently answered my long standing question as to the reason things always seem to fall off the shelving I have erected in my home!As for what might happen to your spirit level in space, I think the bubble would maintain its integrity, but would become as near to spherical as the vial allows, as RD said. It would become a bubble without purpose, a lost bubble, unable to decide where to settle. Ahhhhh! Poor little bubble.A bubble went off into space one dayTo see if it’s shape would remain that wayBut to it’s delight the bubble foundIt went from tear drop to perfectly round.“Oh look at me” the bubble criedAs it twisted and turned to show every side“I’m exactly the same from every angleAnd light from the sun makes me twinkle and spangle”The bubble was elated and full of gleeAs it danced around in the space ship you seeBut it went outside to test this new forceWhereupon it exploded, of course.
Quote from: chris on 25/01/2012 18:40:06... what will Neil's spirit level do in space?IMO air bubble would adopt as near a spherical shape as was possible in the glass tube ...[attachment=15953]If the spirit level was taken outside the spacecraft into the vacuum of space, the air bubble (@1atm) could cause the glass vial to explode.