CBS Sunday Morning on July 10, 2016 goofs on the Tesla story
The CBS Sunday Morning Almanac feature was directed to the birthday of Nikola Tesla on July 10, 1856. The Almanac text included:
[Tesla] went to work for Thomas Edison, but soon split with him over Edison's support for Direct Current (DC) electric power.
Tesla believed that Alternating Current (AC) was more efficient, and switched sides to work with Edison's arch-rival, George Westinghouse.
Tesla also made breakthroughs in radio ... building a landmark 187-foot-tall radio transmitter on New York's Long Island.
IPBiz notes that, contrary to what CBS Sunday Morning reported, Tesla split with Edison over non-payment of a reward for improvements in Edison's direct current generator. As wikipedia notes: According to Tesla, Edison remarked, "There's fifty thousand dollars in it for you—if you can do it. (...) After months of work, Tesla fulfilled the task and inquired about payment. Edison, saying that he was only joking, replied, "Tesla, you don't understand our American humor." Instead, Edison offered a US$10-a-week raise over Tesla's US$18 per week salary; Tesla refused the offer and immediately resigned.
Tesla worked with Alfred S. Brown, a Western Union superintendent, and New York attorney Charles F. Peck to form Tesla Electric Company in April 1887. In 1887, Tesla developed an induction motor, which was submitted for patenting in May 1888. [US Patent 555,190 issued in 1896; filed on May 15, 1888] In July 1888, Brown and Peck negotiated a licensing deal with George Westinghouse. In 1897, Westinghouse purchased the Tesla AC patents for a lump sum.
Of the 187 foot tower at Wardenclyffe. Tesla intended the tower both for radio AND for power transmission. Wikipedia notes:
His primary goal in these experiments was to develop a new wireless power transmission system.
link: https://en.wikipedia.org/wiki/Wardenclyffe_Tower 190
The six claims of US '190
1. In an electromagnetic motor, the combination of independent energizing-circuits, one adapted to be connected with a source of alternating current, the other arranged in inductive relation to the said first circuit whereby the motor will be operated by the resultant action of the two circuits, as set forth.
2. The combination in an electromagnetic motor, with an alternating coil or conductor and a closed-circuit conductor in inductive relation thereto, of an armature mounted so as to be within the field produced by the coil and closed conductor, as set forth.
3. The combination in an electromagnetic motor, with energizing-coils adapted to be connected with the generator of induced coils and independent energizing-coils in circuit therewith and arranged to produce a shifting movement of the points of maximum magnetic effect of the motor, as set forth.
4. The combination in an electromagnetic motor of a series of independent energizing-coils or sets of coils and induced coils wound on all the energizing-coils or sets of coils but the last of the series, the first energizing-coil or set of coils being included in circuit with a generator and each succeeding energizing-coil or set of coils being in circuit with the induced coils of the next preceding energizing-coils of the series.
5. In a system for electrical transmission of power the combination of an alternating-current generator, a motor with an energizing coil or coils connected with the generator, secondary coils in inductive relation to said energizing-coils, and energizing-coils in circuit therewith arranged in substantially the manner set forth to produce a movement or rotation of the points of maximum magnetic effect of the motor, as set forth.
6. In an electromagnetic motor the combination of independent energizing-circuits, one for connection with a source of alternating currents, the other in inductive relation to the first, whereby a rotary movement or projection of the field-poles will be produced by the conjoint action of the two and an armature mounted within the influence of the field produced by the energizing-circuits and containing closed coils or circuits, as set forth.
Rewind all the way to 1888: Nikola Tesla invented the polyphase AC induction motor (US Patent numbers 381968, 381969, 382279, 433700, 433701, and 555190). Tesla was interested in such a motor because it was simpler, and because it could be driven directly from AC transmission lines or from a dynamo without need for rectification. Tesla worked to perfect the AC induction motor, and most of the motors we use in plug-in appliances and equipment are directly derived from his work.
Of the use by Tesla Motors of the induction motor, see
The July 10 "moment of nature" did Trinity River. Recall also the April 3 "moment of nature": We leave you this Sunday Morning among the flowers that bloom in spring at Dallas' Great Trinity Forest.