To have your picture taken by the very first camera you would have had to sit still for 8 hours!
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The ball on top of a flagpole is called a 'truck'.
24
The life boat was patented in 1845!
29
The Queen Mary - the grandest vessel of her day - had many of her vital components made by car manufacturer Skoda!
23
The IRS processes more than 2 billion pieces of paper each year.
28
The United States produces enough plastic film annually to cover the entire state of Texas.
13