By l)i~()F. W. (~:v),Ls A I)AMS, F. II.S. A series (if " (:al!)+,r Lectures" (h'livered I)et',)re !he 8()(:iet.x" ,)1 ' Arts, Loud(m, 1Sgl. It has b~en well said that rm'Hv does a ~Te'at dise()ver5, as soon 'ks it is lnade, at (mcc he,hi 1(~ |'umfis[t the ve,-ults whidl tblh)w as a natural eonsequen,'e from it.
Nearly all hnportan: di,-coveeies pass throug'h a stag<~ (>t' ne~h:et or ol)~curitv. Eith(,r lhe pul)lie atlcntion is already pve-,)ccu/fied , or the ~lisc~m,ri~'s u,)t,w at a time when th<: l)ublie :ire n()t l)rel)arcd fi)r them. and (h(,v m'~' (lisvemu'e>h i'or(.e in afire: years, \VlWlt the w,)rh/ is more in tune to receive thenL Sometimes they l)a.-\'s thr()ug'h a slag'(} 0[' quiet (h:veh)pmerit in tile lal)()rat,)ry; laws are esta/)liah('(I, apl,aratus is devised to l)r(:)v( . them, alt('nti,m is dr't\vn t() (hem, pul,li(e ~l,irit is aw:dΒ’en(:(l an([ ii'om the high,,r level (if the gr(,at di:u()vt:r,,r l:h)w ll(%V l'~l(,~l.s an(l new inwmti()ns, with astonishin.,.t rapidity, in re:my (,hamlels ; the p()t(!nlial energ'y (it' tlm (lis~.<)v(~ver is transi'+)rnm([ into (,u(~rgy <)I' auti()n in many directions, wilh m<)rc ()r less vtli('h,u-v a,.(!()r<lin~ (,) lit(: retardin(,\' state of the me(Hum thr, lu~'h which tim) a(,ti,)u takes ill;w<,.
The llV( grvss ,,f' clectrival sei('n('e in its scv(,ral hra)mhes will :tflbrd ll])lllldtlllt illS[:tll('(!S (If' these several stl/..zq,s.
It', 1))1' illStattce, we regard