Instructional Video2:20
PBS

The Leap Second Explained

12th - Higher Ed
Every once in a while we add a second onto our days. Similar to the Leap Year, this is known as the Leap Second. But, if the Leap Year already helps us account for the offset from a calendar in days, what exactly does the Leap Second do?...
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Label Printing Press...

Pre-K - Higher Ed
Label Printing Press...
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Stitching Line sequence

Pre-K - Higher Ed
Stitching Line sequence
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Stitching Line sequence...

Pre-K - Higher Ed
Stitching Line sequence...
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Cylinder

Pre-K - Higher Ed
Sequence of clips of an old letterpress printing press in motion, from start up to delivery...
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Print Room

Pre-K - Higher Ed
Print Room
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Feeder In motion...

Pre-K - Higher Ed
Feeder In motion...
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Cylinder...

Pre-K - Higher Ed
Cylinder...