Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: paul.fr on 23/07/2007 21:34:28

Title: Does the wind have weight?
Post by: paul.fr on 23/07/2007 21:34:28

Pretty powerful stuff, wind. Now i can feel the force of the wind as it hits me, but does it have a measurable weight?

Title: Does the wind have weight?
Post by: Karen W. on 23/07/2007 21:53:21

Would not force imply weight??? Secondly is that before the wind picks up particles and dust and such, or after..? Would you be including all of the elements being picked up by the wind?

Title: Does the wind have weight?
Post by: theroyalburgh on 23/07/2007 22:15:39

Wind is the movement of air. So would the weight of the wind not just be the weight of air in a given volume, dependant on the pressure.

Title: Does the wind have weight?
Post by: lyner on 23/07/2007 22:35:36

One metre cube of air at sea level has a mass in the region of 1kg.
It's not surprising that you can feel that when it bumps into your face!
It's mass - not weight - that counts. The weight is just the downward force, caused by gravity. I'm not just being picky about this.

Title: Does the wind have weight?
Post by: daveshorts on 23/07/2007 22:42:34

Air has weight on earth however it is mostly floating on other air so you don't feel it. If you take a vacuum chamber and pump out the air weigh it, then let the air back in, it will get heavier. - I have done this about 50 times in the last 3 weeks ;)

Title: Does the wind have weight?
Post by: another_someone on 23/07/2007 23:02:34

To be pedantic, there would be an imperceptible relativistic weight caused by the small velocity of the wind (unlikely to be measurable with our instruments).