Why is it easier to convert matter into energy but harder to do the reverse

Does it have to do with entropy?

yes -- it's the same reason that heat flows from hot to cold and not the reverse.

that single asymmetry is why it is easier to heat things than to cool them. i.e. much more energy is paid to cool something than to heat it.

("Does it have to do with entropy?")

That's what I think.

Matter appears to be of a low state of entropy, but when converted to energy, entropy increases as the 'distribution' (divergence) of energy increases. There is only one way to account for matter (low-entropy); there are an infinite number of ways to account for the conversion to energy (high-entropy). Matter converted to energy usually results in the release of some form of 'heat'. Heat is extremely high-entropy energy.

Any attempt to reverse the process and convert energy back into matter would 'necessarily' require - time reversal - or turning back the clock. If that statement is correct, and I'm not sure that it is, the implications would be cosmic.

See: Entropy Conversion
http://www.processassociates.com/process…

See: Energy Conversion - e-News -- Penn State ...
http://www.ems.psu.edu/~radovic/fundamen…

Best regards


Best regards