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Lisa Gifford

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Rolf William Landauer

Died 27 Apr 1999 at age 72 (born 4 Feb 1927).German-born American physicist known for his formulation of Landauer's principle concerning the energy used during a computer's operation. Whenever the machine is resetting for another computation, bits are flushed from the computer's memory, and in that electronic operation, a certain amount of energy is lost. Thus, when information is erased, there is an inevitable "thermodynamic cost of forgetting," which governs the development of more energy-efficient computers. While engineers dealt with practical limitations of compacting ever more circuitry onto tiny chips, Landauer considered the theoretical limit, that if technology improved indefinitely, how soon will it run into the insuperable barriers set by nature?«

Husband (a doctor) and his wif...

Husband (a doctor) and his wife are having a fight at the breakfast table. Husband gets up in a rage and says, "And you are no good in bed either," and storms out of the house.
After sometime he realizes he was nasty and decides to make amends and rings her up. She comes to the phone after many rings, and the irritated husband says, "What took you so long to answer the phone?"
She says, "I was in bed."
"In bed this early, doing what?"
"Getting a second opinion!"
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