Recent content by vmars316

Thanks All , Great help !

So you are saying that the insect spray contains freon ? Why would it contain freon , instead of just compressed air ? Thanks

This sounds right But : When I use a can of bug spray , the can in my hand gets cold . I don't know if the spay is cold or not (too toxic to check it out) . But the hole in the nozzle is much smaller that the tube leading to it . So there is work being done there also as air is released into...

Because the cold has a starting point . Think about it : Suppose the funnel is made of a stack of iron rings . Each ring having a smaller diameter than the ring above it . And in between each ring is a ring of an insulating material keeping the cold from spreading . Again , where does the...

Yes, obviously, But I am thinking of a fan blowing into a funnel shaped thing where the speed of the air increases as it goes thru the very narrowest end of funnel shaped thing . And if the funnel was made of iron I am wondering where on that funnel would be the coldest point ? Where would...

Hello & Thanks, Is it possible to use only a powerful fan without a compressor to make very cold air ? Thanks

* I found a pretty good answer here: http://www.math.montana.edu/frankw/ccp/before-calculus/function/boyle/learn.htm Boyle's Law involves a relationship between three properties of a gas in a container. The volume of the container -- denoted V. Volume is measured in units of length^3 -- for...

[ "certain parts" heating up; which parts? ] Holding the can while spraying: the can itself gets cooler. Does it get hot elsewhere? Nozzle? etc.. Thanks...vmars316

Greetings, I would like to know the physics of a 'pressurized can of sprayPaint', or insecticide, etc.. When the gas is released: some area heats up, and another area cools off. Could someone explain this to me. Or aim me at an article, with diagrams, that will explain why and which...