Comments on: Episode 95: James Bond Special 1

By: kenny

kenny — Sat, 21 Apr 2012 09:48:02 +0000

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By: Sarai

Sarai — Mon, 26 Mar 2012 01:55:53 +0000

வர க க க நன ற ILLUMINATI.’pursuit of happiness’ படம ம எனத ல ஸ ட -ல இர க க ன றன. ப ன ம தத த ல ஒர ந ள ஏத ஒர த ல க க ட ச ய ல இப படத த ப ப ட ட ர ந த ர கள . என க ட ட ந ரம ப ர க க ம ட யவ ல ல . கண ட ப ப க ப ர க க வ ண ட ம .//ஒர தந த ய ன கத இத .எல ல ர ம ப ர க க வ ண ட ய ஒர படம . //ஆம ..

By: Manicol

Manicol — Mon, 17 Oct 2011 09:01:57 +0000

in fact Adam made several bullets from steel for that mith…steel is attracted to magnets.

By: MSpears

MSpears — Thu, 25 Aug 2011 13:34:27 +0000

Bullets often have a copper or steel jacket, depending on the purpose of the bullet. And as has already been stated in this thread, anything that conducts electricity will be affected by a moving magnet (or by moving next to a magnet, such as flying by) due to ‘eddy currents’.

The problem is not that lead does not stick to magnets. The problem is that the bullet is just too darned fast.

By: MSpears

MSpears — Thu, 25 Aug 2011 13:31:43 +0000

He did? I’ll have to go back and watch that again, in frame advance.

By: MSpears

MSpears — Thu, 25 Aug 2011 13:30:41 +0000

A good point, but unfortunately an irrelevant one, because the whole point of the myth was “could the boat make that jump without damage?” and it clearly could have, if Adam hadn’t lost control at the last second.

By: MSpears

MSpears — Thu, 25 Aug 2011 13:28:10 +0000

@DaveM: Thank you! I would’ve said the exact same thing, but you beat me to it. And steel IS attracted to magnets.

By: MSpears

MSpears — Thu, 25 Aug 2011 13:26:58 +0000

Lead IS a metal. It just isn’t a FERROUS metal (i.e., a type of metal that is attracted to magnets).

By: P Fudd

P Fudd — Mon, 25 Jul 2011 17:02:32 +0000

Ah yes, but a moving conductor (of almost any kind of metal or even salty water) in a magnetic field will generate a current, which in turn generates another magnetic field, in the opposite direction to the original magnetic field.

The electric train cars in Vancouver, Canada (SkyTrain) use magnetic fields and aluminium plates between the railway tracks to move. The submarine in “The Hunt for Red October” used magnetic fields and salt water.

By: Gus

Gus — Mon, 11 Jul 2011 11:19:45 +0000

It’s a bit late to comment on this episode, but I want to say I don’t believe the 9 mm bullet is changing direction due to (electro)magnetic effects.

I see some refere to the eddy effect, witch I have to admit I have never heard of even I’m an engineer. I don’t doubt the eddy effect is worth investigate. It would be interesting if someone here knew how to calculate the forces from this effect. Then we would be able to “guestimate” what impact it would have on the bullets trajectory. My guess is that the eddy effect is negliable.

Personaly I believe aerodynamics might be responsible for the results here. This is since the bullets fly just a few millimeters above the magnets surface. A bullet in high speed will cause air waves around itself, similar to the waves you get from the bow of a boat when moving through the water. If you run the boat close to land, a massive pier or something, the bow waves will reflect back and change the course of the boat, or even make it turn somewhat. Try it, you will certainly notice the effect on the steering wheel.
For a bullet passing by very close to a relatively large surface (longer as they add more magnets), I believe this wave effect will have a significant impact on the bullets trajectory.

Like for the eddy effect, it would be interesting to test this theory using some kind of flow dynamics simulation software, but unfortunately I don’t have access to that.