Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: First EM lab



At 4:20 PM -0500 1/13/02, Joseph Bellina wrote:
If you estimate the radius of the pencil point, and you know the maximum
E field before an arc can occur in air, then you can easily estimate the
charge on the pencil point. Alternately, having previously shown that
about 1 in 100,000 surface sites on the tape is charged, you could make
a reasonable estimate of the charge on the pencil point.


How did we get from the cylindrical plastic wall to a graphite point?

Clarence P. Bennett
bennett@oakland.edu
Oakland University Physics
111 Hannah Hall
Rochester, MI 48309
248 370 3418