| Show s AW I 1 s t ans OP eai jl t C 3 arow t E E yf one ot tho aiji sctt eions in ji pi ar or tfx chlof I 1 i tai i f lor 0 i B Bola aln L eiThe paring of 2 ahe l rorea pis Pla r irne S 77 by means of 1 describe ce st sprang sp ringi td tm transmit alt met aier a avire div teril heniz drad innes a diagram or dra draw 1 ni ing with I 1 that lid t R apparatus the he af tb receiving alvn instrument ij mad e to imitate imitate precisely the motions dotso of a talca la in the senders hand ant thil oblena of trans in A la in faitau r way y a elm shaded ded picture 1 asre ake ac a photograph so that an observer can take it all anat a glance it if projected 1 upon a sheen or so sombat a plate will register it if jot for further rea pi I 1 Is still unsolved t y ethe principle lavol ved in jin an is the n oala oa la number of points in the original design into ei electric and the and proper distribution oy theio aeao impulses impulse by there celTer in a recent issue of the electrical world IL C johnson raises the er it i would noo be better to a separate wire for each p pulsation lit in a oi operation atlon and hence to td have hate a bunch of gereral thousand vires mires ext extending eDding y from one instrument to tat the other or oc to send all the pulsations successively kiil one wire vire bat baft sufficiently dently dose close together to make them appear simultaneous and aad thus thiv yields an av apparently ly CM complete picture tire to the e eje e 1 other persons have bontemp con contemplated temp using the former plan but mr de y scribes S a possible application of cf the latter one he his has not tried cried th the experiment and puts the idea fo forming with i modesty teave yet very 7 un to be begin in with te he woold wo old broj project act his picture sith a strong light through d lins lens upon a small brou prou ground n id glass screen in front of the transmitter the mott important element in the of the latter would tie be a selenium rell selenium is a substance sub whose electrical c i conductivity is affects affect A Kl by variations variation in light failing upon tipon it if a PI piece of selenium be placed in ari an el ecar 1 etre circuit alt therefore the insanity of the cui current will vary tary with that of any aluffi luminous ginotis rys rays fi falling lillig cupoli upon it it and if each cach minute Elin tite portion of a transparent lighted from behind be exposed separately throng an ape aperture to a selenium eel cell the graduations in 11 electrical intensity will M P r to the lights and shadeed shade sd the illustration bonz in inal making ing such by the way it would be desirable mohave to have each one alternate alter nite with a complete colli shutting n 9 off of all light from the selenium sele n so BO that the current would kb be broke up into a aj serie aerl 11 i i 01 0 pulsations varying of course in strength very ve ry dill delicately catel now fo sir johnsons idea is 9 that such acell a cell might be gult suitably ably mounted in a cylinder ef linder alose sides side were perforated there should be a casing just outside of ct the alle cylinder with a horizontal coriz antall slit extending e the width of the e on jf glass owing to their Sil arrangement ran gement only one of them the holc boies stolid ST oaId be opposite tha slit silt at a time but only a small part of a single revolution would be required to present to the silt all one row it the franc frame holdina holding this bylinder had a slow blow and arr perly regulated downward down vaid motion the first row of holes could be made to record in a ight horizontal line atie the intensities of light and mhd shade ae airm across the lie top of the picture and the next row of lles holes register another series of points along a straight line a little lower down and so eo on ea to the bottom of jh picture ure at thel end 6 of the line there should be a Q cylinder under similarly perforated and rotated ted at precisely the same sama rate of speed it should contain a light heat that would gleam beam tho MCI toem aga ane e holes on to the screen ser but only on one hole at a time wo would uld let light through ih and tsat that hole would po pond exactly to the onel om in thea transmitter which at that identical instant wao was eai to the picture finally within the re ra ceia ing ig cylinder there s should be wine some means of varying tarring the brillI brilliancy mic ta of the illumination according g to althe intensity int i of the elea tion the rela ti alve v e brightness of each point in the 0 original ligin 4 4 would then tie be faithfully reproduced in tatt abe copy every eatery c hild knows that owing end adl of un a stick which walh has been thru thrust t in theare alie 0 ire may be whir whirled leil fo make a ting iring of light impressions from differ nt points in the orbit come to the eye such dose succession success e 1 ian that t ha t aey th ey cauin canin cannot not be separated by our perceptions per and one semi seems to see a continuous spark mr johnson joanson donld have his dotz dots of I 1 light projected upon tim the screen with such rapidity as ai to sec similarly effet while this gentl eihan franley sa says rs that there arc comit some yet tet to he be 0 overcome rp reome arr su gest ions nie are not net only g but rabia valuable ble L lentum Sa Sale clum is unequally affected by light fight of ilif Alf ferent colors it would be ne CM ceary ary therefore afo r jany kuch apparatus to use iise mo monochromatic kocl tro a picture in shades of only one hue Ho however holeve weve three such tern as mr fr r Gray used in iii the symptom ot of color antly described sn the Tribune could I 1 ite reproduced t by mr M r Johnsoni sona 7 methel anat hec united in a con with the assistance of rolar screens und aad taw pictures dincol 0 ars could be telegraphed hed to any distance probably evena evenbay by cable |
