The discussion centers on the Joule-Thomson effect and its calculation for gases, specifically helium (He), carbon dioxide (CO2), and nitrogen (N2). The experimentally determined Joule-Thomson coefficients are μJT (CO2) = 0.815 bar/K, μJT (N2) = 0.1319 bar/K, and μJT (He) = -0.0949 bar/K. The participant encountered discrepancies while calculating theoretical values using the van der Waals ...
Hackaday: Creating A Joule-Thomson Cryocooler And A Little Bit Of History At Home
Creating A Joule-Thomson Cryocooler And A Little Bit Of History At Home
A joule in mechanical work is 1 N of force applied on an object to move it a distance of 1 m. So a joule persecond is doing the above action in one second. Btw, a "joule per second" and a "joule second" are not the same thing. Jule per second is dividing by seconds, joule second would be multiplying by seconds.
Then 1 volt means 1 joule per coulomb; 2 volts mean 2 joules per coulomb, and 5 volts mean 5 joules per coulomb. But what is meant by 2 or 5 volts? If one coulomb contains a set amount of electrons, how can one coulomb have more energy or potential to do work than another coulomb? What is different?
The same with Joule's. Don't think of it as Kg*m^2/s^2, think about it as a force being applied over a distance. Joule is energy, and an external force does work on an object by an amount of where F is the force and ds is a small chunk of the path that it travels (a line is 1d).
A joule is the same as a Newton times meter, while a Newton is the force required to accelerate a mass of 1 kg by 1 meter per second squared. so if you write it out it becomes: