Latest from William Gurstelle


Gravity Catapult

Gravity Catapult

12/18/2012

I have long been enamored of catapults. Invented around 400 B.C., they were used until nearly A.D. 1300. So for...

The Fire Piston

The Fire Piston

12/18/2012

Carl von Linde was dead tired. The eminent engineer, considered the father of the modern refrigerator, had just returned to...

1 2 3 4 5 6 7 8 9 10 11 16
Send this to a friend
FEEDBACK