Hi Robotgangsta,
This is very interesting.
no i mean by melting it together with metals then seperating into
granular peices and i want to use very very high voltage to pull
it maybe from 5 feet away
interesting, but difficult to comprehend.
So, no you don't mean by squeezing sand into a lump, as they do in
moulds like making sand sculptures and the like.
You mean by melting it together with metals ...
Well, ive seen all sorts of metals, and can't imagine any of them
doing anything like that. Unless they are very hot metals, and they
are squeezing together, that might make sand melt.
Maybe you mean that you want to melt both sand and metals together,
if so then it would cool into lumps of granular pieces, which could
be broken up by a hammer into little bits.
But as to pulling something with a high voltage,
thats called electrostatic attraction.
Its normally very weak. It can lift hairs at short distances, a TV
screen can move hairs on your head if you put your head near the
screen. And a TV screen can pull dust toward itself, dust that
is floating in the air.
I don't think that electrostatics would make any measurable pull on
granules of sand or metals from five feet away.
Unless of course you dont mean voltage, maybe you mean magnetic
attraction. Very strong magnetic fields can pull from a few feet,
but because the pull is inversely proportional to the square of the
distance multiplied by the square of the attracted mass (in K-gramme
Maxwells) then any movement of the attracted mass towards the
source increases the pull
drastically. This leads to very rapid accelerating movement of the
attracted mass being pulled, in the case of the new powerfull ceramic
magnets it can result in badly damaged fingers, or if fingers are
lucky enough to be brushed aside, often broken magnets.
I would suggest that an electro magnet of this power should be under
electronic control such that sensors would respond to any unintended
movement.
However i doubt that an electromagnet could be made to produce very
much pull from five feet away. I could imagine that it just might
make a ball bearing roll on a flat surface.
Unless anyone here knows any different ....
Regards, John