Absorption of Radiant Energy by Different Colors- equation 5
Posted: Thu Jan 07, 2016 1:43 pm
Can anyone help this math challenged mama figure out how, in converting joules to eV, the exponent came out to positive 22?
Hi Susie50,
I’m assuming that you’re working on the project described here:
https://www.sciencebuddies.org/science- ... ml#summary
Equation 5 is a conversion from energy to the rate of photon emission. The large exponent in the final result (22) comes from division by numbers with very small exponents. Take a look at the second term on the left hand side of the equation. This division of 1 by 1.6E-19 gives 6.25E18. The division in third term (1/0.000124) gives 8.06E3. Multiplication of these two results gives 5.04E22.
I hope this helps. Please ask again if you have more questions.
A. Norman