1867-1934

„La petit curies”

Po - Polonium

Polonium is a silvery substance which is radioactive. Polonium has been studied for some use of heating spacecraft. However polonium is highly unstable and will not be used for such heating methods.

Ra - Radium

Radium is pure white however it oxidizes in the air and turns black. It has a half-life of 1601 years and decays into radon gas!!

„Az élet egyikünk

számára sem könnyű…

de hinni kell, hogy van

tehetségünk valamihez és

hogy ehhez a valamihez

mindenáron el kell

jutnunk.