In 1913, Both Frederick Soddy and Kazimierz Fajans formulated the first law to describe how one radioactive isotope decays into another. #Poetry #Science #History #Physics #RadioactiveDecay #Soddy #Fajans (https://sharpgiving.com/thebookofscience/items/p1913b.html)
concave bends have minus sign,
The sum of the squares of all four bends
Is half the square of their sum.
#soddy #poem #Descartes
