Day 18 | LThMath Advent Calendar

In today's post I wanted to share a little creative way of showing some digits of square root of 2. The square root of 2 (approximately 1.4142) is a positive real number that, when multiplied by itself, equals the number 2. Technically, it should be called the principal square root of 2, to distinguish it from the negative number with the same property. General Information It is the length of a diagonal across a square with sides of one unit of length; this follows from the P