The distance between two adjacent wave peaks (or troughs).
Wave length..
Distance from one crest to the next crest of a wave.
1 wavelength in a transverse wave is equal too the distance between crest and crest or trough and trough
wavelength, amplitude, and frequency
By frequency on the electromagnetic spectrum
To measure the speed of a wave, you multiply the frequency by the wavelength.
Wave length..
Distance from one crest to the next crest of a wave.
1 wavelength in a transverse wave is equal too the distance between crest and crest or trough and trough
Yes. To be precise, the wavelength is the length of one precise cycle, and one way to measure that is from top to top.
wavelength, amplitude, and frequency
By frequency on the electromagnetic spectrum
The speed of a wave equals the frequency times the wavelength (speed = frequency x wavelength). Therefore, the wavelength would equal the speed divided by the frequency. Also, the speed of a wave in a vacuum is the speed of light, c, which is a constant.
to measure wavelength and other wave characters
You can measure it from crest to crest (highest point of a wave), trough to trough (lowest point of a wave), or from normal to normal.
Here is an equation that relates three quantities of any wave: speed = frequency x wavelength. However, I am pretty sure that usually, you'll have to somehow measure the speed of the wave, instead of calculating it. In other words, you would measure the speed and the frequency, and then use the formula to calculate the wavelength; or measure the speed and wavelength, and use the formula to calculate the frequency.
speed= frequency x wavelength