Collectors Go Bananas for Flawed $20 Bill
Story about a $20 Bill with a Del Monte sticker under the serial number and seal. With picture.
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Friday January 06, 2006
Monday January 02, 2006
The Pitch Drop Experiment- The longest continuously running lab experiment
In 1927 Professor Parnell heated a sample of pitch and poured it into a glass funnel with a sealed stem. Three years were allowed for the pitch to settle, and in 1930 the sealed stem was cut. From that date on the pitch has slowly dripped out of the funnel - so slowly that now, 72 years later, the eighth drop is only just about to fall.
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