What Makes Electron Volts So Powerful in Relating Mass, Temperature, and Energy?

[Kevin McHugh]

The electron volt can be defined as mass, temp and energy.

1 eV = 1.6022 x 10^-19J

1 eV = 1.783 x 10^-36kg

1 eV= 1.160 x 10⁴K

How can something with such small energy and mass exhibit such high temperature? 10⁴K is white hot

 

[Doc Al]

The electron volt can be defined as mass, temp and energy.

The electron volt can be used to define units of mass, temp, and energy.

How can something with such small energy and mass exhibit such high temperature?

It's not a 'thing'; it's a unit of measure that proves convenient in the right context.

 

[Khashishi]

It's unfortunately confusing because physicists are lazy. Electron volts are really a measure of energy. But if you multiply temperature by Boltzmann's constant you get an energy, so if we (lazily) say the temperature is 0.03 eV, what we really mean is that temperature times $k_B$ is 0.03 eV.
If we measure mass in electron volts, we really mean the energy equivalent of the mass is in electron volts. $E = mc^2$ gives the energy equivalent for a mass.

 

[Kevin McHugh]

The electron volt can be used to define units of mass, temp, and energy.It's not a 'thing'; it's a unit of measure that proves convenient in the right context.

Electron volt is a noun, i.e. a person, place or thing. Besides being useful, how can an energy of 1.6022 x 10^-19 J be equivalent to a temperature of 1.160 x10¹¹ K?

 

[Khashishi]

I already answered that...

 

[Kevin McHugh]

It's unfortunately confusing because physicists are lazy. Electron volts are really a measure of energy. But if you multiply temperature by Boltzmann's constant you get an energy, so if we (lazily) say the temperature is 0.03 eV, what we really mean is that temperature times $k_B$ is 0.03 eV.
If we measure mass in electron volts, we really mean the energy equivalent of the mass is in electron volts. $E = mc^2$ gives the energy equivalent for a mass.

Thanks man.

 

[Kevin McHugh]

I already answered that...

I think I'll call you speedy

 

[Doc Al]

Electron volt is a noun, i.e. a person, place or thing.

You need to expand your definition of noun to include abstractions, such as units of measure. The idea that there is some "thing" called an electron volt that has the given mass and temperature is incorrect.

Besides being useful, how can an energy of 1.6022 x 10-19 J be equivalent to a temperature of 1.160 x1011 K?

How the eV can be used to measure temperature and mass, nicely summarized by Khashishi, is covered in the wiki page for electron volt.

 

[David Lewis]

In this context, electron actually means the amount of electric charge possessed by one electron or proton (a.k.a. an elementary charge), which is the same as 1.6 x 10^-19 coulomb.

When you multiply charge by voltage, you get energy.