In article ,
says...


"John Gaquin" wrote:
"Mxsmanic" wrote in message

This is a misconception. Radioactivity is nuclear decay. The
production of x-rays has nothing to do with radioactive decay.



Mxsmanic is essentially correct.

Well taken - nevertheless, the discovery made by Roentgen is
universally accepted as one of the initial, pioneering steps in the
discovery of radioactivity.

One claim the French can make without contest is the discovery of the
n-ray :

http://en.wikipedia.org/wiki/N_ray