Search Results for: Optical elements of glass
. it encompasses various types of fixed, mobile, and portable applications, including two-way radios , cellular telephones , personal digital assistants (pdas), and wireless networking . other examples of applications of radio wireless technology include gps units, garage door openers , wireless computer
sumner tainter invented the photophone , a telephone that sent audio over a beam of light. the photophone required sunlight to operate, and a clear line of sight between transmitter and receiver. these factors greatly decreased the viability of the photophone in any practical use. it would be several...
https://en.wikipedia.org/wiki/Wireless
. it encompasses various types of fixed, mobile, and portable applications, including two-way radios , cellular telephones , personal digital assistants (pdas), and wireless networking . other examples of applications of radio wireless technology include gps units, garage door openers , wireless computer
sumner tainter invented the photophone , a telephone that sent audio over a beam of light. the photophone required sunlight to operate, and a clear line of sight between transmitter and receiver. these factors greatly decreased the viability of the photophone in any practical use. it would be several...
https://en.wikipedia.org/wiki/Wireless_revolution