Re: First EM lab

[Herbert H Gottlieb <herbgottlieb@JUNO.COM>]

On Sat, 12 Jan 2002 21:59:12 -0500 Joe Heafner <heafnerj@VNET.NET>
writes:
> Take a plastic ball point pen and rub it in your hair so that it
> acquires a net charge. Hold it a couple of centimeters above a small
> piece of paper (e.g. a tiny bit of paper from a notebook sheet).
> Find the height at which the paper is just lifted by the electric
> force. From this, estimate the polarizibility of carbon.

I don't get is Joe. I tried what you said
and found that the height distance is EXACTLY 3.28759
centimeters. Using this data how do I estimate the
polarizibility of carbon??

Maybe it would be better to use an ordinary wood pencil
that has some hardened CARBON inside?

Herb Gottlieb from New York City
(Where they leave the carbon out of our plastic ball point pens)