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Rudy Van Rossen

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421. Colleen Atkinson 2
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423. Rudy Van Rossen 2
424. kishore c.k 2
425. James Mason 2
last 3 solved tasks
MATH PUZZLE: Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?

Radar

In 1934, the first test of a practical radar apparatus was made by Rudolf Kuhnold in Kiel Harbour, Germany, Chief of the German Navy Signals Research Department. His 700-watt transmitter worked on a frequency of 600 megacycles, had a receiver and had disk reflectors. It received echoes from signals bounced off the battleship Hesse, anchored 600 yds away. In an October test, it picked up echoes from a ship seven miles away. Radar was to be an important asset in the coming WW II, but ironically it was the U.S. and Great Britain, that took Kuhnold's pioneering work and developed it into a reliable detection system. Kuhnold may thus be described as the man who won the Battle of Britain for the English!

Sibling lessons

Charlie was playing with his little brother Mickey when the little boy asked whether he could fly like Superman.

"Sure you can, Mickey," Charlie said, "Just flap your arms really *really* hard."

So Mickey climbed up on the windowsill, started flapping like mad, jumped, then smashed into the ground two stories below.

Horrified, their mother came screaming into the room and said, "What the heck happened?!?"

Charlie said, "I was just teaching Mickey not to believe everything someone tells him."

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