Integrating equation (2), (6.a.) CS Say (tyet = o70-2, and (6.b.) Led, -0.2_,tat<0, O02) € SAgtT(t where: Cc @ # total nuzber of disintegrations from tine “a* to *b* t, B tice efter detonation %, ™ later tine after detonetion. khen t, ie infinite, (7) Coc = SAF By the use of equation. 3.6. or 3.b, ani 6.t. one may corpute an ectirrte” dove at the surface of ar toaginary erhere, Cf course, the problen 4: the determination of t* and "t,"s 1.@., how long efter detonation will eo radioactive particle appear in the lungs anc how lens will the particle recain in place, The first tine (t) is mck eecier to astirate ther the later (t,). (ee text page 53) DCins Vy