To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Any modern jet is capable of breaking the sound barrier.
34
There are only 14 blimps in the world.
69
More than a billion transistors are manufactured every second.
-25
Attics were invented in Attica.
43
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
First four countries to have television: England, the U.S., the U.S.S.R., and Brazil.
47
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7