# data[].attributes.body
Nikola Tesla was a Serbian-American inventor, electrical engineer, mechanical engineer, physicist. In 1891, Tesla unveiled one of his most important inventions, the "Tesla coil," a high-frequency transformer capable of creating very high voltage at low current. He built several variations of his invention. Circuitry using the Tesla coil was part of the first generation of transmitters to carry wireless telegraphy.

# data[].attributes.body
"I don't care that they stole my idea...I care that they don't have any ideas of their own."

# data[].attributes.body
Homemade Tesla coil. It's quite an accurate depiction of a small coil and the guy shows how it operates.

# data[].attributes.attachment_link.description
This is a video that describes how a Tesla coil works in basic terms. To see more videos of this coil under power watch "Tesla Coil 2.0 with 1 foot arcs" and "Tesla Coil 2.0 with double power (3 foot arcs)".

# data[].attributes.body
In modern day time, the Tesla coil Most modern Tesla coils also use toroid-shaped output terminals. These are often fabricated from spun metal or flexible aluminum ducting. The toroidal shape helps to control the high electrical field near the top of the secondary by directing sparks outward and away from the primary and secondary wingdings.

# data[].attributes.body
The first radio wave generators, invented by Heinrich Hertz in 1887, were spark gaps connected directly to antennas, powered by Tesla coils.

# data[].attributes.body
a coil for generating intermittent high voltage from a direct current

# data[].attributes.body
One of the original Tesla coils, Wardenclyffe Tower.

# data[].attributes.headline
How Does It Work? And What Does It Need?

# data[].attributes.subject
How Does It Work? And What Does It Need?

# data[].attributes.body
Induction produces an electromagnetic field in a coil to transfer energy to a work piece to be heated. When the electrical current passes along a wire, a magnetic field is produced around that wire. When there is a change in the direction of electrical current (AC) the magnetic field generated fails, and is produced in the reverse direction, as the direction of the current is reversed. When a second wire is positioned in that alternating magnetic field, an alternating current is produced in the second wire. The current transmitted through the second wire and that through the first wire are proportional to each other and also to the inverse of the square of the distance between them.

We need the induction coil because we use radio waves everyday. From our phones to the radio in our cars, we are constantly listening to radio waves being transmitted. We also use it when we use it when we need light.

# data[].attributes.body
Nikola Tesla invented the Tesla Coil in 1891.

# data[].attributes.body
Electricity has been in many scientists' mind for decades and how to capture and produce it.

# data[].attributes.body
Guglielmo Marconi  uses the Tesla coil to create a two-circuit system. Marconi had taken out the first wireless telegraphy patent in England in 1896. His device had only a two-circuit system, which some said could not transmit "across a pond." Later Marconi set up long-distance demonstrations, using a Tesla oscillator to transmit the signals across the English Channel.