You're still missing the point. At the same pressure, a litre of hot air does have less mass than a litre of cold air. Hot air rises because it is less dense than cold air, because the particles bounce off each other more energetically. So yes, heating unconfined air does make a given volume lighter. The relationship between the particles average speed (be careful here, you said velocity) and the Earth's escape velocity is such a smaller effect as to be negligible.
It's very likely there is life on Mars, but not necessarily native Martian life. Given that we've found lots of Martian meteorites on Earth, a lot of Earth rocks must have made it to Mars - and living organisms pervade the upper crust of our planet.
Actually the energy released in conventional chemical explosives is governed by E=mc^2 too, the spent explosives weigh less than before they exploded. The difference per mole is much smaller than for nuclear explosives, but E=mc^2 is a universal rule and still applies.
sounds like you think conventional graphics pads/tablet PCs have squidgy pressure sensitive screens?
that isn't the case, the pressure sensitivity (up to 1024 increments) is always built into the spring-loaded stylus tip, and communicated wirelessly to the PC.
Slashdot Mirror
You're still missing the point. At the same pressure, a litre of hot air does have less mass than a litre of cold air. Hot air rises because it is less dense than cold air, because the particles bounce off each other more energetically. So yes, heating unconfined air does make a given volume lighter. The relationship between the particles average speed (be careful here, you said velocity) and the Earth's escape velocity is such a smaller effect as to be negligible.
It's very likely there is life on Mars, but not necessarily native Martian life. Given that we've found lots of Martian meteorites on Earth, a lot of Earth rocks must have made it to Mars - and living organisms pervade the upper crust of our planet.
Actually the energy released in conventional chemical explosives is governed by E=mc^2 too, the spent explosives weigh less than before they exploded. The difference per mole is much smaller than for nuclear explosives, but E=mc^2 is a universal rule and still applies.
Fair enough, I misread.
sounds like you think conventional graphics pads/tablet PCs have squidgy pressure sensitive screens? that isn't the case, the pressure sensitivity (up to 1024 increments) is always built into the spring-loaded stylus tip, and communicated wirelessly to the PC.
OSx86 project