Tesla chicago world fair

Nikola Milutinov Tesla was born in the small village of Smiljan in what is modern-day Croatia. Childhood Inventions. Tesla began inventing at a very young age. His autobiography describes boyhood inventions such as Early Influences.

Young Nikola's education and interests have great impact on his later inventions. After graduating from high school in , Nikola contracts cholera and makes a life-changing choice. College Years.

Graz Polytechnic institution of higher education where Nikola Tesla studied for several years. The Chicago World Fair of is significant because it commemorated the th anniversary of Christopher Columbus sail to the new world. This exhibit displayed the technological leap society would make with the usage of the electric power as much of the world still relied on alternative sources of light such as daylight, candles, and gas or oil lighting.

Westinghouse faced a challenge when he could not use the incandescent lamps since they were patented by General Electric. This was the key to the success of the AC system. Modern transmission grids regularly use AC voltages up to , volts.

Alternating-current transmission lines have losses that do not occur with direct current. Due to the skin effect, a conductor will have a higher resistance to alternating current than to direct current; the effect is measurable and of practical significance for large conductors carrying thousands of amperes. The increased resistance due to the skin effect can be offset by changing the shape of conductors from a solid core to a braid of many small isolated wires.

Total losses in systems using high-voltage transmission and transformers to reduce or increase the voltage are very much lower than DC transmission at working voltage. Current Wars : Edison's publicity campaign Edison carried out a campaign to discourage the use of alternating current, including spreading disinformation on fatal AC accidents, publicly killing animals, and lobbying against the use of AC in state legislatures.

Edison directed his technicians, primarily Arthur Kennelly and Harold P. Brown, to preside over several AC-driven killings of animals, primarily stray cats and dogs but also unwanted cattle and horses. Acting on these directives, they were to demonstrate to the press that alternating current was more dangerous than Edison's system of direct current.

He also tried to popularize the term for being electrocuted as being "Westinghoused". Years after DC had lost the "war of the currents," in , his film crew made a movie of the electrocution with high voltage AC, supervised by Edison employees, of Topsy, a Coney Island circus elephant which had recently killed three men.

Edison opposed capital punishment, but his desire to disparage the system of alternating current led to the invention of the electric chair. Harold P. Brown, who was being secretly paid by Edison, built the first electric chair for the state of New York to promote the idea that alternating current was deadlier than DC.