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Groucho's Fact Hunt

but what if a GOTer is one day presented with a question like : what is the sum of all the integer numbers 1 to 20? They now know how to quickly do it : ie (1+20)=21
21 x 20= 420
420 ÷ 2 = 210.

What's the expression?: give a man a fish, feed him for a day. Teach a man to fish, feed him for a lifetime
tenor.gif
 
Can I shoot myself in the back of my head though
if you put the gun behind you and fired into the back of your head...then yes. lol

But with the moon having 1/6th of Earth's gravity, and negligible air resistance, and a circumference of around 10,000km, if you fired the gun forwards, the back of your head, (even if it's a huge head like Chico's), wont be anywhere near being threatened.
 


Alexander Graham Bell invented a wireless telephone, named a photophone which allowed for the transmission of both sounds and normal human conversations on a beam of light.

On June 21, 1880, Bell transmitted a wireless voice telephone message a considerable distance, 19 years before the first voice radio transmissions.

Bell believed the photophone's principles were his life's "greatest achievement", telling a reporter shortly before his death that the photophone was "the greatest invention [I have] ever made, greater than the telephone".

The photophone was a precursor to the fibre-optic communication which achieved popular worldwide usage in the 1980s. Its master patent was issued in December 1880, a century before the photophone's principles came into popular use.
 

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