Science teacher

"If it don't fit, don't force it. Turn it over and try again." Cliff, a dockworker at MJ Rudolpf, ca. 1977 P...

On August 9, 1945, just over 2 1/2 pounds of plutonium was converted to energy 1650 feet over Nagasaki. Two and a half pounds--about...

19th century version: Yesterday I headed for one of my favorite places with one of my favorite people to do one of my favorite things--cla...

If you want to kill a child's interest in astronomy, buy her the biggest piece of glass you can afford the first hour she expresses any ...

This post is a mess, an amalgam of several yet-born posts swirling about. This is a tool, made by Takeshi Yamada ,  an artist who saw visi...

A Crooke's radiometer measures sunlight intensity, which sounds all scary and scientificy, until you see one in action. It's simpler...

On August 9, 1945, just over 2 1/2 pounds of plutonium was converted to energy 1650 feet over Nagasaki. Two and a half pounds--about the wei...