Problem: A person wishes to build a square house with an area of 500 square feet. What should be the length of the side of the house?
Articles from April 2020
C. Raymo Sr.'s slide rule • Photo by Tom Raymo
Photo by Kyle Gregory Devaras on Unsplash
Black velvet skies
Every astronomer and backyard stargazer who has ever looked into the night has made one of the most important observations in the history of astronomy. The night sky is dark! Stars shine in a black sky.