Muppit Member Profile in The AnswerBank

helium

what property of helium allows the airship to float

How do you determine the age of old material?

I collect old military uniforms and cloth badges and with the advent of better and better fakes on the market is there a scientific process that can date an item, a bit like 'carbon dating'? Thankyou!

Oakleaf51

Helium 3

What is so special about this isotpe of helium that newspapers reported, Nasa could be thinking of mining from below the Moons surface? Don't we have any here on Earth, and if not, why not?

Flibert

Frozen Air!

My friend, Jojo, tells me that you heat air at an extreme tempreture to freeze it, is this true?

matt_london1

Why do we yawn?

and why is it catching?

Bert

Lagging pipes

Many (many) years ago, my old physics teacher told us (though I may have been the only one listening) that lagging pipes to prevent heat loss was a waste of material after a certain point. This...

willow27

god v aliens

do aliens exist, cause it occurred to me the other day that if they do then that totally rules out the theory of god because in the bible it says that there are no other planets in the universe or any...

osh

water flow rate in stream / ditch

Does anyone have any suggestions as to how to measure the flow rate / volume of water flowing within a ditch. Preferably something home made (i.e. cheap!). I have a few ideas but thought I would ask...

Questions

Answers

Best Answers