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 frequency of a wave is one of its most fundamental principles, and the range of possible frequencies makes up something known as the electromagnetic spectrum. This runs from low-energy radio waves to high-energy gamma rays. Unlike its wavelength, the electromagnetic frequency of a wave doesnât change. Electromagnetic radiation is a type of wave that travels at the speed of light. It is a transverse wave, which means it oscillates up and down in a direction opposite that in which it is moving. The electromagnetic frequency of a wave is defined as how many times the peak of this oscillation moves past a point each second. This has a major effect on the properties of the wave, including its energy. The wavelength, on the other hand, is the distance between two peaks of the wave or, in other words, the length of a full cycle.