The first flag of the United States of America had 13 stars, white  on a field of blue representing a new constellation.. The 13 stars  actually represented the first 13 stâ¦ates of our new nation in 1776.
#c = 3.00 x 10^8#m/s (the speed of light in a vacuum) #lambda# = wavelength in meters. #nu# = frequency in Hertz (Hz) or #1/s# or #s^-1#. So basically the wavelength times the frequency of an electromagnetic wave equals the speed of light. FYI, #lambda# is the Greek letter lambda , and #nu# is the Greek letter nu (it is not the same as a v). To find wavelength (#lambda#), the equation is manipulated so that #lambda = c/nu#. EXAMPLE PROBLEM.
The only difference between these manifestions of electromagnetic radiation is due to differences in the frequency and wavelength of the oscillations. These two quantities are related by the formula (velocity) = (frequency) x (wavelength), which in this case reads c = f l. The types of electromagnetic radiation are listed above in decreasing order of wavelength, and hence increasing order of frequency. (When we study a little quantum mechanics later in the course, we will learn that this is also the order of increasing energy for the individual photons.)