when did the tesla model s come out
Tesla Model S The Tesla Model S is a full-sized all-electric five-door, luxury liftback, produced by Tesla, Inc., and introduced on 22 June 2012.[13] It scored a perfect 5.0 NHTSA automobile safety rating.[14] The EPA official range for the 2017 Model S 100D,[15] which is equipped with a 100 kWh (360 MJ) battery pack, is 341 miles (550 km), higher than any other electric car.[16][17] The EPA rated the 2017 90D Model S's energy consumption at 200.9 watt-hours per kilometer (32.33 kWh/100 mi or 20.09 kWh/100 km) for a combined fuel economy of 104 miles per gallon gasoline equivalent (2.26 L/100 km or 125 mpg‑imp).[18] In 2016, Tesla updated the design of the Model S to closely match that of the Model X. As of October 2017[update], the following versions are available: 75D, 100D and P100D.[19]
Marcus Álvarez
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Nikola Tesla In the summer of 1889, Tesla traveled to the 1889 Exposition Universelle in Paris and learned of Heinrich Hertz' 1886â€“88 experiments that proved the existence of electromagnetic radiation, including radio waves.[94] Tesla found this new discovery "refreshing" and decided to explore it more fully. In repeating, and then expanding on, these experiments, Tesla tried powering a Ruhmkorff coil with a high speed alternator he had been developing as part of an improved arc lighting system but found that the high frequency current overheated the iron core and melted the insulation between the primary and secondary windings in the coil. To fix this problem Tesla came up with his Tesla coil with an air gap instead of insulating material between the primary and secondary windings and an iron core that could be moved to different positions in or out of the coil.[95]