There’s a new tiny sci.math archive out there

My friend Porsupah Rhee — you might know her work from a sometimes-viral photo of rabbits fighting, available on some fun merchandise — tipped me off to this. It’s a new attempt at archiving Usenet, and also Fidonet and other bulletin boards. These are the things we used for communicating before web forums and then … Continue reading "There’s a new tiny sci.math archive out there"

No, You Can’t Say What 6/2(1+2) Equals

I am made aware that a section of Twitter argues about how to evaluate an expression. There may be more than one of these going around, but the expression I’ve seen is: Many people feel that the challenge is knowing the order of operations. This is reasonable. That is, that to evaluate arithmetic, you evaluate … Continue reading "No, You Can’t Say What 6/2(1+2) Equals"

Reading the Comics Follow-up: Where Else Is A Tetrahedron’s Centroid Edition

A Reading the Comics post a couple weeks back inspired me to find the centroid of a regular tetrahedron. A regular tetrahedron, also known as “a tetrahedron”, is the four-sided die shape. A pyramid with triangular base. Or a cone with a triangle base, if you prefer. If one asks a person to draw a … Continue reading "Reading the Comics Follow-up: Where Else Is A Tetrahedron’s Centroid Edition"

In Our Time podcast has episode on Pierre-Simon Laplace

I have another mathematics-themed podcast to share. It’s again from the BBC’s In Our Time, a 50-minute program in which three experts discuss a topic. Here they came back around to mathematics and physics. And along the way chemistry and mensuration. The topic here was Pierre-Simon Laplace, who’s one of those people whose name you … Continue reading "In Our Time podcast has episode on Pierre-Simon Laplace"