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Dramatization of Alexander Graham Bell's first telephone call.
A man opening pages of a Photo album, with a cover reading 'When Telephone Was Young'. Shows pictures of Alexander Graham Bell, inventor of the telephone; the place where telephone was invented and Thomas A. Watson, who made the first telephone. Then, in a reenactment, by actors, Watson enters a room and gives a prototype model of the telephone to Bell. Bell examines and connects other parts of telephone. Watson goes to a short distance in room. Bell speaks first words over telephone 'Mr. Watson, Come here; I want you!'. Watson hears the words on receiver. Then Bell goes to another room with the phone receiver and Watson speaks over phone. Both in room hug each other.
Operations of early switchboards.
Operation of early switchboards. Pages of book showing early switchboard. Man operating switchboard. The first switchboard for commercial telephone service installed in New Haven, Connecticut. A man operating and talking into telephone and other man listening. Men operating switchboards.
Mechanical dialing system and growth of telephone system, woman dials on candlestick phone.
A film describing a mechanical dialing system of telephones. Men working with switchboards and other equipment. A woman with a short curly flapper hair cut dials a phone number on a candlestick style phone and speaks into the phone.
Operators answer calls in a telephone exchange. Scene of 1926 telephone switchboards compared to 1879 earlier switchboards.
A film describing telephone exchange operations and the work of early telephone switchboard operators. A book showing picture of 1879 telephone exchange. Young men reenact the operation of an 1879 era telephone exchange or switchboard. They work feverishly to keep up with calls and make connections while a supervisor stands behind and observes. The 1879 system is then contrasted with the newer 1926 system. Large number of women seen seated at a line of telephone switchboards, handling calls in an orderly fashion. They wear early headphone apparatus. Supervisors walk behind the women inspecting operations. Close up view of women operating the telephone switchboards. Animated representation of connection between telephones and different places.
Description of how a telephone works.
Animated film shows how sound waves are created by the human voice cause movement of air molecules and how this movement is transmitted through the flexible diaphragm of the telephone mouthpiece. The electrons passing through carbon granules in the mouthpiece are transformed into electric current and the magnet and flexible diaphragm in the telephone receiver transforms the current into sound waves. An old man and a kid talking into phone.
Airborne Nuclear Reactor. Rods inserted in reactor and adjustments made by remote controlled metal hands.
Airborne Nuclear Reactor in storage pit. Men work on reactor. Rods are inserted in the central core of a nuclear reactor and adjustments being made by remote controlled metal hands. Reactor tilts on one side.
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