|Traveling Wave Relationship|
The relationship of the wave frequency, wavelength and propagation velocity.
|Doppler Effect in sound|
Calculation of frequency and wavelength change for a moving source
|Symbol frequencies table|
This online calculator builds symbol frequency table for a given message
With Planetcalc plugin for Wordpress you can easily insert any planetcalc calculator in your wordpress-based site or blog pages.
|The waves and the wind. Calculation of wave characteristics|
Calculation of wave characteristics
|Text fitness (version 3)|
This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses logarithms of probabilities with normalization to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.