BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:"The Vacuum Tube” — Howard Fisher\, Tutor Emeritus
X-WR-TIMEZONE:Mountain Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260613T031404Z
UID:tag:localist.com\,2008:EventInstance_51596137704466
DTSTART:20260415T211500Z
DTEND:20260415T221500Z
DESCRIPTION:A puzzling phenomenon observed by Edison in one of his early li
 ght bulbs seemed to disclose a kind of electric current that did not fit t
 he received ideas\, for it was not confined to a conductor\, and it would 
 flow in one direction but not in the reverse direction.  From this “Edis
 on effect” arose the modern vacuum tube\, which enabled\, first\, the de
 tection of electromagnetic waves by a process readily understood (rectific
 ation)\, and second\, a means for effectively multiplying the strength of 
 an electric current (amplification).  Both of these capabilities brought d
 ramatic improvements in wireless telegraphy\, and they also introduced the
  prospect of radio transmission of voice and sound.  \n\nThis is the secon
 d of three talks on early radio technology.
GEO:35.666732;-105.912107
LOCATION:Santa Fe Campus\, Pritzker Student Center\, Junior Common Room
SUMMARY:"The Vacuum Tube” — Howard Fisher\, Tutor Emeritus
URL;VALUE=URI:https://events.sjc.edu/event/fisher-2-lecture
CATEGORIES:Lectures & Presentations
END:VEVENT
END:VCALENDAR