Electromagnetic waves travel at the speed of light (29,979,245,800 centimeters per second) and their frequency and wavelength can be determined by the formulas:

Also, the photon energy can be calculated by the formulas: where 'e' is energy (ergs), 'f' is frequency (cycles per second), 'h' is Planck's constant (4.13566 x 10-15 electron volts/second) and wavelength λ is in centimeters. As always, we have written a calculator to make the work a little easier for you. INPUT Amount >>>>> Now click on one of these boxes The box below is NOT for input. >>>>> >>>>> >>>>> >>>>> Significant Figures >>> For easy readibility, the answers are displayed in a "significant figure" format so you will not see answers such as 77.3333333333333333. Numbers larger than 1,000 and smaller than .001 will be displayed in scientific notation and with the same number of significant figures specified. You may change the significant figures displayed by changing the number in the box above. Most browsers, will display the answers properly but there are a few browsers that will show no output whatsoever. If so, enter a zero in the box above. This eliminates all formatting but it is better than seeing no output at all. Return To Home Page Copyright © 1999 - 1728 Software Systems