Speed, Frequency and Wavelength - How they are related, with examples
Others have answered with the formulaic relationship. I will give a more general conceptual answer. Wavelength is the length of the wave (no kidding). Sound, like all waves, travels at certain speeds through different media and The relationship between the speed of sound, its frequency, and wavelength is the. The relationship between the frequency (the number of wave crests that pass by a certain point in a given amount of time) and wavelength for electromagnetic.
That is, "2 per second". The speed of light has been given the letter c. In fact, as with all mathematical letters it is just a label and any letter would do providing we state what we mean when we use it.
Another way of writing this is: This means a three with eight zeros behind it, i. Again this is just a label, or shorthand, in order to allow us to work quickly with the equation.
HubbleSite - Reference Desk - FAQs
Wavelengths are usually measured in metres. Providing we know any two of the three quantities we can find the other one, either directly or by rearranging the equation. The next section solves the equation as it is, and there is a calculator for frequency, wavelength and speed here. Solving the Equation In this example we will consider the frequency of radio waves.
Radio waves are just another form of "light", i. Let's say we have a radio with a dial that is only marked in MHz. This is a measurement of frequency and we note that 1 MHz is the same as 1 million hertz the M in MHz stands for " mega ", which means million.
Optics - Wavelength, Frequency, And The Speed Of Light
We are told of a radio broadcast we want to hear but we are only given the wavelength of the station and not the frequency. The wavelength we are given is 3.
We know the speed of light and we know the wavelength so it's now an easy matter to plug these numbers into the equation and find the frequency of the radio station: White is actually not a color, but a combination of all colors, occurring when all frequencies of light are reflected. Likewise, black is actually the absence of reflected light, occurring when all frequencies of light are absorbed.
Light waves exhibit constructively and destructive interference patterns. Constructive interference occurs when two or more light waves meet in phase e.
When the light waves meet out of phase e. The concept of interference is important for understanding the phenomena of diffraction. Young's double-slit interference experiment is a classic explanation for diffraction, which is the bending of light as it passes around an object.
Young made two small slits relatively close to each other on a dark board. When he shined a light through the slits and observed the light on a screen, he noticed that the light did not pass directly though in two straight lines.
Instead, there was a pattern of alternating bright and dark bands of light. This resulted from the light waves fanning out-diffracting-as they passed through the barrier slits, much like water ripples when it passes from a small opening into a larger body of water. Because light waves were passing through two slits, two fans were created that overlapped at certain points.
Some of these points experienced destructive interference, while others were constructive, thus leading to the alternating bands of light. The dark bands occurred when light waves canceled each other out. Optics - Reflection And Refraction [next] [back] Optics - Electromagnetic Waves Citing this material Please include a link to this page if you have found this material useful for research or writing a related article. Content on this website is from high-quality, licensed material originally published in print form.