To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
The life boat was patented in 1845!
29
Any modern jet is capable of breaking the sound barrier.
34
Castor oil is used as a lubricant in jet planes.
-5
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
A small airplane can fly backwards.
75
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
A toaster uses almost half as much energy as a full-sized oven.
33