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A tachyonic antitelephone is a hypothetical device in theoretical physics that could be used to send signals into one's own past. Albert Einstein in 1907 [1] [2] presented a thought experiment of how faster-than-light signals can lead to a paradox of causality, which was described by Einstein and Arnold Sommerfeld in 1910 as a means "to telegraph into the past". [3]
Call originator - (or calling party, caller or A-party) a person or device that initiates a telephone call by dialling a telephone number.; Call waiting - a system that notifies a caller of another incoming telephone call by sounding a sound in the earpiece.
Request for position; response in terms of a geographic landmark, or off a common reference point. Post attack Directive transmission to indicate desired direction after completion of (Direction) intercept/engagement. Post hole Rapid descending spiral. Press Directive to continue the attack; mutual support will be maintained.
Reference books are either used very frequently—a dictionary or an atlas, for example—or very infrequently, such as a highly specialized concordance. Because some reference books are consulted by patrons too frequently to have enough copies and others so infrequently that replacing it would be difficult, libraries prefer to make them ...
Another SRAC device's nomenclature was RT-519, which operated in the VHF spectrum. Former British intelligence officer Richard Tomlinson mentioned SRAC devices of a cigarette pack size in his book The Big Breach: From Top Secret To Maximum Security. The text of a message was first typed on a computer and then uploaded into the SRAC device.
Originally the terms were used interchangeably but nowadays most radio users use the term "jamming" to describe the deliberate use of radio noise or signals in an attempt to disrupt communications (or prevent listening to broadcasts) whereas the term "interference" is used to describe unintentional forms of disruption (which are far more common ...
The communication channel is the infrastructure that enables messages to "travel" between the communicating parties. The message exchange patterns describe the message flow between parties in the communication process, there are two major message exchange patterns — a request–response pattern, and a one-way pattern.
Terms of reference (TOR) define the purpose and structures of a project, committee, meeting, negotiation, or any similar collection of people who have agreed to work together to accomplish a shared goal. [1] [2] Terms of reference show how the object in question will be defined, developed, and verified.