Why only gold in leaf electroscope?

1. Mar 9, 2008

manjuvenamma

Can some one tell me the speciality of gold for being used in gold leaf electrocscope in spite of being expensive when there are so many cheper metals that fit the bill as it appears to me?

2. Mar 10, 2008

Staff: Mentor

One can make very thin (and therefore very light) sheets of gold ("gold leaf"). The electrostatic forces between small amounts of charge are very small, so it's an advantage to make electroscope leaves as light as possible.

3. Mar 10, 2008

manjuvenamma

Thanks, I am convinced.