In the previous essay, we saw how 1 + 2 + 3 +... n = n(n+1)/2, which can also be expressed using the sum symbol as But what if we wanted a formula for the sum of sums, specifically , 1 + 3 + 6 + 10 + ... n(n+1)/2, Notice that 1 = 1;... Continue Reading →

# From Dominoes to Math Summation Formulas

Standard dominoes have 28 tiles. Figuring why is fairly straightforward. Think of all the tiles with a blank. There are seven in all. Next are tiles that begin with the number 1. We already have the one paired with a blank, so the number 1 can only be paired with the numbers 1 through 6.... Continue Reading →

# (Not So) Absurd Search For Dark Matter

Here is a transcript and some images from the excellent video: https://www.youtube.com/watch?v=6etTERFUlUI (in case you want to save electricity or simply prefer reading over watching). "I am at a gold mine a couple hours outside of Melbourne,because, one kilometer underground, they're putting in a detector to look for dark matter. Let's go. It's gonna take... Continue Reading →