
jephri sell

mechanical televisionte scophony sisttathil upayogikkunnathinu peruketta aadyakaala acosto-opttik modulettaraayirunnu jephri sell. jeey aanu ithu kandupidichathu.echu. 1934-ll jephri, labhyamaya modulated laittinte 200 madangu anuvadichu akkalam vare upayogichirunna kerr sell modulettarukale apekshichu oru pradhana mechappeduthalaayirunnu ithu.
prakaashathinu lambamaayi sanjarikkunna ultrasonic shabdatharamgangal upayogichu, modulator vyathyastha refractive soochikayude mekhalakal srishtichu, ithu laitt tharamgamukhatthinte bhaagangalude purogathiyilekkum mandagathiyilekkum nayikkunnu. ithu prakaashatharamgangalkkidayil kriyaathmakavum vinashakaravumaaya edapedalilekku nayichu, avayude theevratha krameekarikkunnu.

