The sampling rate of such a system is constrained to relate simply to the field rate and field structure of the television standard used, so that an integer number of samples can be stored on each usable TV line in the field. Such a recording can be made on a monochrome recorder, and these recording are made in two standards, 525 lines at 60 Hz and 625 lines at 50 Hz.

so one could sail up the Nile, then drift back down with the current

after he was confined to his home. He figured it was unlikely to be controversial and get him in more trouble.

so they could assess the tensions of the ropes by ear

made from springy wood and only four spokes. worked like a bow to absorb shock.

the yacht America won the race (which was then named for it) largely because American sail makers used tighter woven fabrics with the weave arranged to align tensions with the fibres while the brits used loose woven flax sails arranged haphazardly. The American sails allowed the yacht to sail in higher winds and turn in a tighter radius. When the Queen was told that America had come in first, she asked who came in second and was informed that no other ships were yet in sight.

4’ 8.5” standard railway gauge derived from roman chariots. proved to be a major handicap (trains would be more stable and better able to go fast with a wider base)

the mitochondrial DNA makeup of Iceland is roughly 50 percent Norse and 50 percent Irish

Henry Gustav Molaison (February 26, 1926 - December 2, 2008), famously known as HM or H.M., was an American memory disorder patient whose hippocampus, parahippocampal gyrus, and amygdala were surgically removed in an attempt to cure his epilepsy.

The developers used ‘/’ for flags. Then, when DOS 2.0 added directories, ‘/’ was already taken, so they used backslash for the directory separator.