Nikola Tesla is a very good inventor. He has contributed more than 1,000 invention patents to mankind in his life. He has made more achievements than Edison. He invented many things, such as what we have now. The AC power supply system used is his invention. Tesla has also studied anti-gravity aircraft, wireless power transmission technology, etc. Tesla is famous for playing with electricity. Now let’s talk about the “Tesla” named after him. "Pull Coil", which is an artificial lightning device and the ancestor of radio, for which Tesla is also known as the "Master of Lightning".
At an expo, Tesla wore clothes made of special materials and wooden shoes and walked around among the crowd. His body was constantly flashing purple arcs and making "da" sounds. "Click" sound, people stay away from it. This is artificial lightning, which uses Tesla coil to energize to generate lightning. This is a very interesting device. There are still many Tesla coil enthusiasts. It is actually a A high-voltage transformer boosts low-voltage electricity to generate high-voltage electricity through two sets of coils. The voltage can reach millions of volts, and lightning will emit when an object approaches.
Lightning occurs every moment in nature. When lightning in the sky hits an object on the ground, it releases a voltage of up to 100 million volts and generates a high temperature of 30,000 degrees Celsius, which is equivalent to 6 times the surface temperature of the sun. It is powerful. Incomparable, but the lightning generated by Tesla coil can make people read a book under it without any harm. Once, people saw Tesla holding two balls of ball lightning in his hand and playing with it. It can be seen that Tesla's artificial lightning will not harm the human body. Cause harm.
Why is this? According to the electric power formula P=UI, when the power is constant, the higher the voltage, the smaller the current flowing through the circuit. In the artificial lightning of Tesla coil, the secondary voltage is as high as millions of volts, but its current It is only a few milliamperes or even smaller, so it is not harmful to people. Nowadays, many enthusiasts will make Tesla coils. When they approach the coil with their hands, a purple arc will discharge toward their hands, but But nothing happened to my hands.
Tesla wanted to use artificial lightning for wireless power transmission to save the trouble of wire transmission. It once put a fluorescent tube close to the coil. The lamp did not need to be connected with wires to energize it. After it was close to the coil, the lamp lit up. In 1892, Tesla came to Europe to demonstrate his experiments. He even made a prediction: In the future world, electric energy can be transmitted wirelessly.
In 1895, Tesla designed wireless power transmission to West Point, 50 miles away from New York. He developed a giant cone coil. This device could release a voltage of millions of volts, but in experiments Before the start, a fire broke out in the laboratory, and all the equipment was burned down. Tesla was seriously injured, and the wireless transmission experiment was interrupted. The strong Tesla rebuilt the laboratory and continued to study electrical phenomena. He broadened his horizons and believed that The entire universe is a huge energy field, and he must find a way to extract this cosmic energy for human use.
Marconi, an engineer in the UK, drew on the electrical resonance principle of Tesla coils. When coils of the same frequency are installed in different places and receive weak electrical signals from each other over long distances, the coil devices It will produce a resonance effect. This principle is used for long-distance communication. By receiving and decoding electrical signals, the content sent by the other party can be interpreted. This is the principle of telegraphy.
In 1899, Tesla came to Colorado Springs, Colorado, to conduct a secret experiment here. He continued to study lightning in his laboratory on the outskirts of the city. He believed that lightning was caused by electric charges in the air. The propagation phenomenon can be used for wireless power transmission. He built a giant Tesla coil larger than before. Late one night, Tesla started his experiment. The antenna of the giant coil fired artificial lightning more than 100 feet long. It caused a fire at a local power station, but Tesla continued his experiments.
Financial giant Morgan saw the potential inestimable value of wireless communications and invested in Tesla to build a global communications center. However, Tesla’s purpose was to develop a practical wireless power transmission system worldwide. , he implemented his Wardencliffe Tower plan on Long Island, but at this time Marconi had successfully implemented transoceanic telegraph communication, Morgan withdrew his investment and switched to Marconi, and Tesla's wireless transmission research was terminated. According to common sense, radio can transmit weak electrical signals over long distances, but it is not feasible to transmit high-power electrical energy. The failure of Tesla's Wardenclyffe Project is also reasonable.