RT @neiltyson: Not that anybody asked, but… Measure the circumference of your head in inches, then divide that number by Pi. That’s your Hat size. Mathematically, your Hat size is the diameter of your head in inches if your head were a perfect sphere.

Not that anybody asked, but…

Measure the circumference of your head in inches, then divide that number by Pi. That’s your Hat size.

Mathematically, your Hat size is the diameter of your head in inches if your head were a perfect sphere.

— Neil deGrasse Tyson (@neiltyson) March 14, 2019

from Will Bermender on Twitter

March 14, 2019 at 10:28AM