nuclear question

www.zvis.com...
www.zvis.com...
www.zvis.com...

does anyone happen to know what the lines that appear near the explosion are. ive seen them in many nuclear explosion films and photos and never seen or heard what the were or why they occur, anyone have an answer?

I can't access the pictures but I think I know what you're talking about. The lines are smoke from marker rockets which are used to frame the size of the explosion for the cameras.

The smoke from the rockets is used to measure the progression of the shock wave. The blast compresses air, bending the light so the smoke trails appear to bend. This was measured using high speed cameras.

alot of nuke photos, have lines going up and down in them ,
i think that's what your talking about, i allways
thought that had to do with EMP , look up
EMP and see if there's apic like what you've seen.

Originally posted by Fiorina 161
alot of nuke photos, have lines going up and down in them ,
i think that's what your talking about, i allways
thought that had to do with EMP , look up
EMP and see if there's apic like what you've seen.

I'm pretty sure they are marker rockets.

DanD9
The smoke from the rockets is used to measure the progression of the shock wave. The blast compresses air, bending the light so the smoke trails appear to bend. This was measured using high speed cameras.

I've never heard this, very interesting, do you have a link ?

strange how the links are working for some..they work fine for me and my friends...i dunno i will look for some more photos

The website appear not to allow direct linking to images. It gives this error:

Access Denied!

Please go to the Main Page - www.zvis.com & try to view documents from there

Try this link instead...

zvis.com...

DanD9
"The smoke from the rockets is used to measure the progression of the shock wave. The blast compresses air, bending the light so the smoke trails appear to bend. This was measured using high speed cameras."


I've never heard this, very interesting, do you have a link ?

Sure. Check out nuclearweaponarchive.org...
It usually doesnt appear to bend the cable, it appears to break it. However I have seen several cases where the trails appeared to bend. Sorry, but I don't have a link for that.



[edit on 21-9-2004 by DanD9]

Those are also visible in this:
www.vce.com...


And before anyone asks...
Other (real, not artificial) phenomenon are these spikes extending from fireball.


www.vce.com...

Those are just cables supporting tower where device is being vaporised by fireball's radiation.
nuclearweaponarchive.org...
simplethinking.com...

That's pretty cool. Those spikes, especially. How big was the fireball in those photos, like diameter. (the ones with the cable spikes.)

Thanks.

never saw the spikes before,
that just on air det, or do you get the
spikes on a ground det., if on a ground det,
do the spikes go up, or is that just for
that one pic? wow, never ever heard of
spikes, thought i still think that the lines are
made by the emp pules that come with an above ground det.
dose anyone know if you get an emp if the det
is under ground?

Originally posted by Fiorina 161
dose anyone know if you get an emp if the det
is under ground?

Well, EMP happens when the energy release of a nuke (which is 90% photons immideatley after the explosion) doesn't get converted to heat. This can only really happen in the upper atmosphere, where there isnt much to absorb and remit the EM rad, which is why the US and USSR had nukes wired to go off there. You'll still get major EM radiation when a nuke goes off, but the vast majority will be in the IR, ie heat range.

Originally posted by Fiorina 161
never saw the spikes before, that just on air det, or do you get the spikes on a ground det., if on a ground det, do the spikes go up, or is that just for that one pic?

Read my post.
It says what causes those spikes... or "rope tricks".

Originally posted by Fiorina 161
thought i still think that the lines are made by the emp pules that come with an above ground det.

Originally posted by SilentFrog

Originally posted by Fiorina 161
dose anyone know if you get an emp if the det
is under ground?

Well, EMP happens when the energy release of a nuke (which is 90% photons immideatley after the explosion) doesn't get converted to heat. This can only really happen in the upper atmosphere, where there isnt much to absorb and remit the EM rad, which is why the US and USSR had nukes wired to go off there. You'll still get major EM radiation when a nuke goes off, but the vast majority will be in the IR, ie heat range.

And range of EMP pulse is huge compared to other effects.

The Thor missile carried the test instrumentation and the W-49 warhead/Mk-4 RV payload to 248 miles. The test appeared quite spectacular from Hawaii (800 miles away) and at Kwajalein (1600 miles away), with impressive light displays from an artifical aurora lasting up to seven minutes. The electromagnetic pulse (EMP) from this test sent power line surges throughout Oahu, knocking out street lighting, blowing fuzes and circuit breakers, and triggering burglar alarms.
Starfish Prime:
nuclearweaponarchive.org...

EMP is formed in high altitude explosions when the downwardly directed gamma rays encounter denser layers of air below. A pancake shaped ionization region is formed below the bomb. The zone can extend all the way to the horizon, to 2500 km for an explosion at an altitude of 500 km. The ionization zone is up to 80 km thick at the center. The Earth's magnetic field causes the electrons in this layer to spiral as they travel, creating a powerful downward directed electromagnetic pulse lasting a few microseconds. A strong vertical electrical field (20-50 KV/m) is also generated between the Earth's surface and the ionized layer, this field lasts for several minutes until the electrons are recaptured by the air. Although the peak EMP field strengths from high altitude bursts are only 1-10% as intense as the peak ground burst fields, they are nearly constant over the entire Earth's surface under the ionized region.nuclearweaponarchive.org...

Fo ground/low atmosphere detonations EMP is negligible/it's radius is so small that shockwave crushes/fireball's radiation burns everything inside it in every case.

EMP is also totally invisible to eye... except for "frying" of electronics caused by it.