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Old 01-03-06, 10:51 AM   #31
K
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The penguin is the only bird that walks upright.

Flamingos can only eat with their heads upside down, and pigeons are the only birds that can drink water without having to raise their heads to swallow.

The most poisonous spider isn't the Black Widow - it's the Wingless Daddylonglegs, but it's fangs can't pierce human skin so it poses no threat.

Oh yeah, try this one - apparently no piece of paper can be folded in half more than seven times!
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Old 01-03-06, 10:56 AM   #32
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Last one is true they tried it on Brainiacs with a huge piece of paper.
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Old 01-03-06, 11:01 AM   #33
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What about that truely awful cheap paper you can get from staples? Something like 60gsm!
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Old 01-03-06, 11:03 AM   #34
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Quote:
Originally Posted by fizzwheel
Concorde had a system of baffles on its engines to slow down the air entering the engine to sub sonic speed as the engine wouldnt run properly otherwise
sorry to be an idiot poster........
but ALL supersonic aircraft have a system to 'ramp' air going into the intakes to ensure the air is not going supersonic into the engine.


so, yeah.... your comment was quite correct!!!
But... it could be changed to "a jet engine will only work if the air entering is subsonic."

anybody know why supersonic intakes are made square?
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Old 01-03-06, 11:06 AM   #35
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A 2p piece weighs the same as two 1p pieces - now that is a staggering fact!!
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Old 01-03-06, 11:14 AM   #36
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A container filled with small ball bearings has the same amount of air around them as the same container filled with larger ball bearings of the same total mass.

I remember reading that somewhere and i'm pretty sure it applies to 1 pence and 2 pence pieces too!
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Old 01-03-06, 11:15 AM   #37
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Quote:
Originally Posted by K
Jon Pertwee served as an officer aboard HMS Hood, adn was lucky enough to be on shore leave when she was sunk by the Bismark with only three survivors.

Denholm Elliot served with the RAF and was sot down during a bommbing mssion over Denmark. He saw out the last three years of the war in a POW camp in Silesia.

Murray Walker drove a tank during WWII.

Christopher Lee served as a Flight Lieutenant, as well as with Intelligence and Special Forces in the Western Desert, Malta, Sicily, Italy and Central Europe.
And Tony Hart was an officer in the Gurkhas.
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Old 01-03-06, 11:16 AM   #38
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Quote:
Originally Posted by branny

anybody know why supersonic intakes are made square?
Somthing to do with shockwaves and stagnation pressure ?

Are all supersonic inlets square
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Old 01-03-06, 11:17 AM   #39
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Does the addition of swarfega have any...bearing...on this fact?
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Old 01-03-06, 11:19 AM   #40
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Quote:
Originally Posted by mysteryjimbo
A container filled with small ball bearings has the same amount of air around them as the same container filled with larger ball bearings of the same total mass.
Well, thats a given isnt it!

Same mass, same material, same volume
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