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Author Topic: Today's Ponderance!  (Read 1319 times)

Martin [Admin]

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Today's Ponderance!
« on: December 06, 2010, 11:50:21 am »


Thunder!

To deaden a sound, we use lots light airy and irregular shaped materials... like cotton wool, yet the scientists tell us that
the 'crack' from the bolt of lighting is echoed between all those soft fluffy clouds to produce the loud thunder...

 ... have they been having me on all these years?

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malcolmfrary

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Re: Today's Ponderance!
« Reply #1 on: December 06, 2010, 01:57:42 pm »

Just think how loud it would be otherwise....... ;D ........speaking of cracks and thunder....... %)
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dodgy geezer

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Re: Today's Ponderance!
« Reply #2 on: December 06, 2010, 02:25:25 pm »



 yet the scientists tell us that the 'crack' from the bolt of lighting is echoed between all those soft fluffy clouds....


Reference, please?
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Lord Bungle

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Re: Today's Ponderance!
« Reply #3 on: December 06, 2010, 02:37:47 pm »

isn't a soft fluffy cloud made up from lots of hard lumpy drops of water? hit a lake of water at 100mph and its very very hard, speed of sound is 768 mph so it would be even harder, so it would echo.
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Martin [Admin]

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Re: Today's Ponderance!
« Reply #4 on: December 06, 2010, 02:50:21 pm »

Reference, please?

Mr. Davies, my secondary  school physics teacher!
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dreadnought72

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Re: Today's Ponderance!
« Reply #5 on: December 06, 2010, 02:58:23 pm »

isn't a soft fluffy cloud made up from lots of hard lumpy drops of water? hit a lake of water at 100mph and its very very hard, speed of sound is 768 mph so it would be even harder, so it would echo.

But audio frequencies range from 20Hz to 20kHz, giving wavelengths from 16.5m to 1.65cm (at the speed of sound of 330 m/s).

This is a range of wavelengths vastly bigger than raindrops: so raindrops shouldn't echo?  %)

Andy

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Lord Bungle

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Re: Today's Ponderance!
« Reply #6 on: December 06, 2010, 02:59:53 pm »

but its lots of raindrops so it would act like a solid.
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Corposant

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Re: Today's Ponderance!
« Reply #7 on: December 06, 2010, 04:20:49 pm »

A "soft fluffy" solid?
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Netleyned

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Re: Today's Ponderance!
« Reply #8 on: December 06, 2010, 04:42:04 pm »

When I was in the Fleet Air Arm we spent a lot of time repairing cloud collision damage  %% %% %%


Ned
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pugwash

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Re: Today's Ponderance!
« Reply #9 on: December 06, 2010, 05:49:50 pm »

Ned I always thought you were a dabtoe didn't realise you were an airy fairy.
Geoff
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Netleyned

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Re: Today's Ponderance!
« Reply #10 on: December 06, 2010, 06:27:10 pm »

Geoff
Airy Fairy for 2 years then offered accelerated promotion in the skimmers
Basically no roster time
Left Lossiemouth  in 62 Stood by Eskimo in Cowes then Hey Ho off to the Gulf
They got their own back 67 Eagle for two years and all my old mates were airside  <*< <*<

Ned
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