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Old 06-11-2012, 09:12 PM
 
15,922 posts, read 17,885,861 times
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And listen to the bullets whizzing by after the explosion....

How Far Away Was This Explosion? | Wired Science | Wired.com
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Old 06-11-2012, 10:01 PM
 
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Cool, but the guy with the website is a dweeb. A quick check shows the shockwave of C4 travels about 8,000 meters per second. The idea of timing the distance based on sound is fruitcake science. As he says himself "What do I know about explosives though? Clearly, not much."
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Old 06-12-2012, 05:26 AM
 
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This has to be largest explosion on video, 3.5 on the richter scale. It's a rocket fuel plant.


------edit------

Largest explosion other than nuclear Forgot to mention, the initial explosion at the start is just the opening act. Watch the whole thing or skip to about the 1:10 mark.


Destroyed in Seconds- Chemical Plant Explosion - YouTube

Last edited by thecoalman; 06-12-2012 at 06:29 AM..
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Old 06-13-2012, 01:50 PM
 
Location: U.S.A.
3,305 posts, read 9,876,155 times
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Quote:
Originally Posted by thecoalman View Post
This has to be largest explosion on video, 3.5 on the richter scale. It's a rocket fuel plant.


------edit------

Largest explosion other than nuclear Forgot to mention, the initial explosion at the start is just the opening act. Watch the whole thing or skip to about the 1:10 mark.
Can't view the link but I believe I saw it on a tv show. From what I understand it was the result of poorly placed cigarette butt.
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Old 06-18-2012, 08:43 AM
 
Location: Londonderry, NH
41,478 posts, read 52,813,396 times
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IIRC the sped of sound in air is around 1,000 ft/sec. I use that to estimate the distance to lightning. One mile per five sec.? When the sound arrives in under five sec I go indoors or get back in the car.

If shock waves trigger detonation and are at the speed of sound in the medium how do devices such as primacord and shock tubes manage to propogate explosions at 25,000 ft/sec?
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Old 06-18-2012, 11:18 AM
 
18,766 posts, read 56,555,369 times
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Quote:
Originally Posted by GregW View Post
IIRC the sped of sound in air is around 1,000 ft/sec. I use that to estimate the distance to lightning. One mile per five sec.? When the sound arrives in under five sec I go indoors or get back in the car.

If shock waves trigger detonation and are at the speed of sound in the medium how do devices such as primacord and shock tubes manage to propogate explosions at 25,000 ft/sec?
Sound travels as waves in the air. The speed varies according to density and other factors. A shock wave is not limited by the speed of sound. Perhaps the easiest way to consider this is if you stood 2000 feet from a huge explosion, you wouldn't have to wait to hear the explosion to be killed by it. The speed of sound in air is not a barrier like the speed of light in a vacuum. Planes break the sound barrier all the time. The shock wave near the plane is also traveling faster than sound. The sound of the shock wave follows the normal rules.
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Old 06-18-2012, 05:32 PM
 
Location: Walton County, GA
1,242 posts, read 2,920,696 times
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ok, so both those videos are now my favorite go boom vids
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Old 12-10-2015, 09:03 PM
 
Location: Oceania
8,610 posts, read 6,537,853 times
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Meet MOAB...


https://www.youtube.com/watch?v=i9H50tHiHjs
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Old 12-14-2015, 08:37 AM
 
8,607 posts, read 4,523,078 times
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Tsar Bomba - most powerful man-made explosion in history. 50 Megatons.


https://www.youtube.com/watch?v=aMYYEsKvHvk
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