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Arcelie Viray

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Which number replaces the question mark?

Prince Louis-Victor de Broglie

Died 19 Mar 1987 at age 94 (born 15 Aug 1892). Louis Victor Pierre Raymond duc de Broglie was a French physicist best known for his research on quantum theory and for his discovery of the wave nature of electrons. De Broglie was of the French aristocracy - hence the title “duc”(Prince). In 1923, as part of his Ph.D. thesis, he argued that since light could be seen to behave under some conditions as particles (photoelectric effect) and other times as waves (diffraction), we should consider that matter has the same ambiguity of possessing both particle and wave properties. For this, he was awarded the 1929 Nobel Prize for Physics.

Avoiding A Big Object

Driving to work, a gentlman had to swerve to avoid a box that fell out of a truck in front of him. Seconds later, a policeman pulled him over for reckless driving. Fortunately, another officer had seen the carton in the road. The policmen stopped traffic and recovered the box. It was found to contain large upholstery tacks.
"I'm sorry sir," the first trooper told the driver, "but I am still going to have to write you a ticket."
Amazed, the driver asked for what.
The trooper replied, "Tacks evasion."
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