# Calculations involving Wavelength, Frequency and Energy

This is simple drill and practice involving electromagnetic radiation. On loading,
and when you press "New Problem", one of the cells in the first table will be filled.
Enter the two missing values and press "Check Answer" Results appear in the second
table. Pay close attention to the dimensions. You should continue with a problem
until you get it correct, but you can generate a new problem at any time. Use "e"
notation for scientific notation. Thus, 2.3e-4 equals 2.3*10^{-4}

- Pressing the "Show Answer" will cause the correct answer to appear and you will no longer be able submit an answer for that problem.