h a l f b a k e r yOutside the bag the box came in.
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A simple plastic glove with a battery and coils of wire, with the twitch of a finger, the battery powers the coils creating a static charge around the glove, drawing dust to the glove and giving it a charge.
You then walk to the trash can and stick the glove inside.
With the twitch of another finger
the current is reversed, reversing the glove's charge. This forces the dust away from the glove, due to identical charges. You then walk to the sink and wash off and residual sticky dust.
ESD
http://www.dscc.dla...Packaging/ESDS.html
Catastrophic and latent damages to electronic components [normzone, Feb 25 2005]
Van der Waals forces
http://www.chemguid...ms/bonding/vdw.html
... are also how geckos can stick to almost any surface, from near frictionless to very rough. [Detly, Feb 25 2005]
[link]
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Probably not amazing to the homeless. |
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Use caution when dusting electronic devices. |
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True. But it would only be a mild electrical charge. |
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A computer component can be damaged by the spark you generate by walking across a carpet. I might use this for dusting furniture.....if I ever dusted furniture. |
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The dust is attracted to the glove because of dipole
forces induced in the dust particles - the (say) positive
charge on the glove pushes the free positive charges in
the dust particles away from the glove, and the now
negative ends of the dust particles are attracted to the
glove. |
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Unless both the dust and the glove are electrically
conductive - and the dust certainly isn't - there will be no
residual charge left on the dust. Reversing the charge on
the glove would simply cause the dust to jump a little,
and then resettle on the glove like before. |
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The technical term for the effect is 'Van Der Waals'
attraction. |
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Also, coils of wire create a magnetic, not electric, field.
I'm not sure how one easily creates an electric field which
is not confined to a space between two charged objects
(eg. plates or terminals). |
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You do know that there is a low tech static mitten duster on the market don't you [DesertFox]? |
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