Date: 7/05/2015 13:32:55
From: CrazyNeutrino
ID: 719194
Subject: The first images of a thunderclap

the first images of a thunderclap

The Earth cops 4 million lightning strikes a day but understanding their energy and the impact of the accompanying thunder has challenged scientists and meteorologists for centuries.

In an experiment mimicking elements of Benjamin Franklin’s famous kite flying in a thunderstorm in June, 1752, US scientists have triggered a lightning strike by launching a rocket trailing grounded copper wire into a storm cloud over a military base in Florida.

more…

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Date: 7/05/2015 13:36:36
From: CrazyNeutrino
ID: 719200
Subject: re: The first images of a thunderclap

related, but off topic

Watch an Awesome Lightning Bolt Get Captured in a Box

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Date: 7/05/2015 13:45:01
From: dv
ID: 719210
Subject: re: The first images of a thunderclap

These are not the first images of a thunderclap

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Date: 7/05/2015 13:52:49
From: CrazyNeutrino
ID: 719213
Subject: re: The first images of a thunderclap

dv said:


These are not the first images of a thunderclap

sort of

SwRI scientists compared long-exposure optical photographs of two different triggered lightning events (on top) with acoustically imaged profiles of the discharge channel (below), corrected for sound speed propagation and atmospheric absorption effects. The apparent tilt of the lightning bolt in the left photo is also seen in the acoustic image.

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Date: 7/05/2015 13:54:14
From: CrazyNeutrino
ID: 719215
Subject: re: The first images of a thunderclap

if you could visualize thunder somehow, it would be impressive

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Date: 7/05/2015 14:29:44
From: roughbarked
ID: 719220
Subject: re: The first images of a thunderclap

CrazyNeutrino said:


if you could visualize thunder somehow, it would be impressive

I was under the impression that’s what lightning is.

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Date: 7/05/2015 23:59:51
From: mollwollfumble
ID: 719400
Subject: re: The first images of a thunderclap

CrazyNeutrino said:


if you could visualize thunder somehow, it would be impressive

“Using 15 microphones spaced a metre apart and 95 metres from the rocket launch pad, the researchers were able to capture the precise sound waves emanating from the resulting artificial lightning … The initial constructed images looked like a colourful piece of modern art that you could hang over your fireplace.”

Not so impressive. I think that what they’re seeing is the angle between the lightning strike and the ground.

roughbarked said:


I was under the impression that’s what lightning is.

No, thunder is caused by lightning, it isn’t what lightning is.

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Date: 8/05/2015 03:28:08
From: roughbarked
ID: 719408
Subject: re: The first images of a thunderclap

mollwollfumble said:


CrazyNeutrino said:

if you could visualize thunder somehow, it would be impressive

roughbarked said:


I was under the impression that’s what lightning is.

No, thunder is caused by lightning, it isn’t what lightning is.

If thunder is caused by lightning and you see the lightning then why haven’t you visualised thunder?

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Date: 8/05/2015 09:57:47
From: SCIENCE
ID: 719470
Subject: re: The first images of a thunderclap

Hard to say; every time someone uses a non sequitur god kills a kitten, and I see the non sequitur, but have I visualised god killing a kitten?

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