Interesting Facts

Sigma is the 18th letter of the Greek alphabet, but it's also a measurement of standard deviation and it's used in particle physics as a measurement for a discovery. (Seemingly any discovery in particle physics needs a five-sigma level of certainty. This is the equivalent of tossing a coin and getting the same result more than 20 times in a row, because this is very unlikely (try it), a five-sigma result becomes an accepted discovery. So, basically - particle physics is like tossing a coin.)

The dot over an i or j is called a 'tittle'! (So instead of saying "dot your is" you could say "don't forget the tittle. I wonder what a tattle is then?) Source - Wikipedia

There are only 12 letters in the Hawaiian alphabet. (Now I bet you are all wishing you were learning Hawaiian.)

E is the most frequently used letter in the English alphabet. (Samuel Morse (1791-1872), the inventor of Morse code, worked it out so that he could assign the simplest codes to the most frequently used letters. The letters of the alphabet in order of frequency of use are:- ETAISONHRDLUCMFWYPGVBKJQXZ)