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If you saw the insides of an original "wall" phone, you'd see that it used a bell-striker and needed an electrical source to trigger the clacker to the bell. Sound needed transported over the "line", through the cord to the earpiece. In later phones, like the 1940s-1970s "black desk" phone, the insides of the desk portion had more sophisticated wiring and bell. The inside of the ear piece and mouth piece (2 ends) had wiring that acted as receiver (ear side) and sender (mouth side). A repairman lifted out a disc shaped piece to access the connection to the wiring. None of this would be possible without knowledge of engineering and electricity, including the cord that went to the wall jack, connected to an inside drop, that connected to the outside drop on the house, that was connected to wiring on the 'telephone pole' alongside the electrical cable.
What else can I help you with?
Is AutoCAD used in engineering?
Yes, AutoCAD is used in many engineering fields to create drawings and plans.
What equation was used to create the atomic bomb?
Many of them, from both physics and chemistry. Engineering equations were used.
What is the distinction between software engineering and civil engineering?
Software Engineering is a means by which a computer programming language is used to create an application that is designed to peform one or more tasks or processes (Games, Word Processors, Email, etc). Civil Engineering is a means by which the earth's mass is used to create geological structures, such as Earthen Damns, Roadways, Waterways & Barriers, and preparations for various buildings.
What is the phone number of the Green Engineering in Raleigh North Carolina?
The phone number of the Green Engineering is: 919-277-0784.
What is Autodesk's AutoCAD software used for?
AutoCAD is used to create designs and plans which are used by engineering, construction, architecture, manufacturing, media and entertainment industries.
What is meaning of MS project in civil engineering?
Microsoft Project is a software package used to create and track project timelines.
What do you study to create firearms?
Engineering, art,
What is the purpose of a cellular phone?
A cell phone antenna is used to pick up a signal for the cell phone. It is used to create a signal so that a person can give or receive calls. It also can pick up a wifi connection.
How do you call a sales man of civil engineering projects?
If you know his phone number, you can call him by phone.
What is tissue engineering?
Tissue engineering is the process of growing, or engineering, certain tissues found in the human body. The primary purpose for tissue engineering is to replace or repair damaged tissues or organs. ... Scaffolds can be built from a variety of materials, such as collagen and polyester, depending on the type of tissue being engineered. The same materials used to make dissolving sutures are also used in the construction of scaffolds.
What is the uses of the protactor?
A protractor is a tool used in geometry to measure and draw angles. It is commonly used in mathematics and engineering to accurately measure and create angles of varying degrees.
What is pattern fabrication?
(Mechanical Engineering) The manufacture of patterns as used to create a mould when sand casting. The pattern matches the shape you are trying to cast.
