Darren New wrote:
> Mueen Nawaz wrote:
>> Darren New wrote:
>>> Nope. Electric charge, yes,
Though quarks are supposed to have fractional charge.
>>> but not mass. Photons will have mass 
>>> proportional to their frequency, and frequency isn't apparently 
>>> quantified.
>>
>>     Define mass.
> 
> E=mc^2?  Isn't mass measured in electron-volts?
> 
> Why? What's your point?  (This isn't sarcastic. I don't know enough to 
> know why someone who knows more would point out that I didn't define 
> mass, or that my naive understanding of it isn't correct.)
> 

Also not sure what Mueen means, but the m in E=mc^2 is the m that was 
used by einstein. IIRC the current definition would require a division 
by sqrt(1-v^2/c^2). The old definition was certainly not quantified for 
arbitrary velocities.

> Maybe mass is quantified at the quantum level, since mass seems to be 
> related to gravity (as in, inertial mass seems to always equal 
> gravitational mass) and gravity hasn't found a quantum theory yet, sure.

I have still not heard if the experiment to do gravitational experiments 
with anti-hydrogen (anti-proton with positron) did succeed, but I left 
the field some time ago.

> But frequency isn't "and everything is an integer multiple of that 
> amount" kind of thing, as far as I know, right?
>

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