Pith-ball Electroscope in 19th Century, a pig swallowed a radium needle, it took a gold-leaf electroscope to find it.Early story on locating a radium needle in a pig.Dr.
Pith-ball Electroscope in 19th Century.In one case a pig swallowed a radium needle. It took a gold-leaf electroscope to find it.Early story on locating a radium needle in a pig.Dr.