vibrating-reed relay
1Electrometer — An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand made mechanical instruments to high precision electronic devices. Modern… …
2Invention of the telephone — The modern telephone is the result of work done by many people, all worthy of recognition of their contributions to the field. Alexander Graham Bell was the first to patent the telephone, an apparatus for transmitting vocal or other sounds… …
3telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… …
4Military equipment of Turkey — The military equipment of Turkey includes a wide array of arms, artilleries, large surface vessels, cannons, armored vehicles, mortars, unmanned vehicles and many different equipments. Contents 1 Historical development 1.1 General 1.2 1923 1950 …
5Motorola Minitor — Front view of the Minitor V pager. The Motorola Minitor is a portable, analog, receive only, voice pager typically carried by fire, rescue, and EMS personnel (both volunteer and paid) to alert of emergencies. The Minitor, slightly smaller than a… …
6Boardwalk Hall Auditorium Organ — Infobox Instrument name=Boardwalk Hall Auditorium Organ classification= Pipe organ range= related= musicians= builders= Midmer Losh Organ Company articles= *List of notable pipe organsThe Boardwalk Hall Auditorium Organ is the pipe organ in the… …
