Brown and White Vol. 6 no. 26

              calendar saturday jan 21 — re-examina tion in entrance geometry at 9.30 a m quiz in differential equa tions at 8.30 a m sunday jan.22 — meeting of chris tian association in christmas hall at 6.15 p m «. mr twitmeyer superintendent of public schools of bethlehem will address the christian association next sunday night jan 22 at 6.15 p m meeting of mustard and cheese association on saturday jan 21 at the sigma chi house continued on fourth page the second and the one in which the best results are obtained is what is known as the marconi system the transmitter is a gap across which sparks pass their dur ation being regulated by a tele graph key these sparks set up the hertz waves which acting on a distant receiving instrument known as a coherer cause its re sistance to be greatly lowered connected in the circuit with the coherer are a telegraphic relay and several cells of battery when the resistance of the coherer is lowered the battery current can actuate the relay which in turn operates a local sounder the coherer used in the experiment consisted of a electrical engineer ing society the meeting of the electrical engineering society held on thursday was undoubtedly the most interesting as well as the best attended meeting held during the present term the society was called to order by president viehe ; after the roll call and reading of the minutes mr a t brice 1900 was elected to membership mr j h klinck was then introduced to speak on the subject wireless telegraphy the discussion was made especially interesting by the fact that each point was illustrated experimentally there are two general methods of wave telegraphy the first which has not been found practi cable for long distances consists in having two electrodes between which a spark is just ready to pass separated by a distance across which the spark cannot quite jump when ultra-violet rays fall on the gap sparks pass across quite freely this was illustrated by having two brass spheres con nected to the terminals of an induc tion coil so that the gap was just too great for the passage of a spark the sparks passed freely when the ultra violet light of an arc lamp was thrown on the gap by means of a screen of glass the rays could be cut off at will thus producing the signals vol vi the brown and white lehigh university south bethlehem pa friday january 20 1899 examinations january 1899 tfo 26 wednesday , jan 25 thursday jan 26 friday jan 27 saturday jan 28 monday jan 30 tuesday , jan 31 wednesda ly feb 1 i i i r fifth year mining engineering a m geol p m a.m geod p.m a.m p.m a.m mining p.m a.m drawing . p.m a.m mine s p.m a.m p.m senior science and letters pt-ych english lithol civil engineering a lithoi'gy b lithoi'gy geod mecli . macti bridge gr.stat railroads mechanical engineering kinem therm . mech jvlach . me as p gr.stat mach des i i mining engineering quant assaying metall lithol blow p gr.stat mech gr.stat mech electrical engineering dyn el mach therm . dyn.lab el.lt juyn.des meas . p . gr.stat mech gr.stat mech analytical chemistry ind lab assaying metall lithol micrpsc . blow p i i architecture arch d ventil mech mach bridge gr.stat boilers . junior classical greek french psych . econ mod hist ang.s _ am hist latin . latin scientific german french psych econ mod hist ang.s am hist latin . sci and letters german french psych econ mod hist ang.s cryst am hist civil engineering german french geod econ . str.m a crystal'y b cryst astron constr mechanical engineering german math econ sir.m electr boilers gr.stat mech gr.stat mech . mining engineering german french math econ str.m ch.phil cryst quant electrical engineering . . german french math ecou str.m el lab boilers electr i analytical chemistry . . . german org.ch econ cryst i conf ; toyic quant architecture german french persp . econ str.m ih.arch constr . sophomore classical ! english french greek phys latin . rom.h i latin scientific english . german french phys latin . rom.h | c e and architecture english german french phys i drawing constr i i mechanical engineering english . german phys i mach.d i boilers | i ! mining engineering english . german french phys drawing electrical engineering . ., english . german french phys mach.d boilers i i analytical chemistry . . . english . german quant phys ch.phil conf i freshman classical latin english . greek am lit hyg c . e and science chem english . german french am lit i hyg chem e m and a c chem english . german french am . lit . hyg chem m e ande e chem english german . frencb . am lit hyg chem i