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nrqed

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Yes, but one has to be clear with the maths concepts before using math terminology in physics. So it's not a waste of time to get the math right.MeJennifer said:Yes, but how is that relevant to physics? Math and physics are two entirely difference things. One simply uses math as a tool in physics.

So you would tell your students that negative temperature are *impossible*?And apparently some do not even understand the suitability of selection of scale in cases of temperature.

Btw, have you ever heard of spin systems in which the thermodynamic temperature may be negative (because putting in more energy may decrease the number of microstates available)? If not, you should look this up.

If the criterion is to be able to measure something experimentally, then the O Celsius point *is* well defined experimentally. Tell mw how to go in the lab and obtain a system at 0 Kelvin?Really now? 0 Celcius is "well defined" while 0 Kelvin is not?

You are the one who keep insisting that math is secondary and that physics comes first. Then what is so horrendous about a scale which has a zero that is accesible experimentally? The zeroth of the Kelvin scale is a theoretical construct.

That's so incredibly childish...to put words in my mouth. As if I had argued that I wanted to allow for negative speed and negative mass. Please be more mature and don't put words in my mouth.0 Kelvin is very well defined in classic theory.

Of course the uncertainty principle will disallow making something 0 Kelvin for any lenght of time but the same goes here for 0 Celsius. But presumably that would go for mass as well.

Anyway there is no point in arguing with you on this.

Keep telling students that temperature, speed, mass etc can be negative because one can make a scale in "almighty" math that would make it so.

By the way, your comparison with mass (and doubling the mass of the Everest using 2 x 0 ) is inappropriate because this mass and temperature are not both extensive quantities.

But if I am to join the ranks of people on this site you consider stupid, I am in good company (I resisted the temptation to give links to some of your other arrogant posts).

Have a good day