阅读理解There were many famous inventors and scientists in history. You must have heard about a lot of them and known them well. But you may not know Nikola Tesla.
Nikola Tesla and his inventions were well- known to people in the area of science and electricity, but not quite known to the general public today. Nikola Tesla was a Serbian- born inventor, who later moved to the US. He was most well- known for his inventions in the area of electricity and electrical engineering. He was considered one of the greatest electrical engineers in history.
Why was Nikola Tesla not well- known while others in his time became so famous to the public? Some said Nikola Tesla failed to make the right business decisions. Others said it was because of his "mad scientist" qualities (特质) — the same qualities that helped him come up with some of his best ideas. His qualities led him to many strange ideas. Towards his last years, he came up with many ideas that seemed unacceptable to the public at that time. He worked very hard on them, which made people think he was mad.
Many of Tesla's inventions and patents (专利) didn't end up being used in the exact way he had planned for them. Some of those include his high- frequency lighting ideas, wireless power and the free energy receiver.
If you are interested in green energy and reducing your electricity bill, check out products that are developed from Tesla's work. They help create green energy at home, without depending on the electricity companies and without paying for it. They help people save money through producing electricity at home, based on Nikola Tesla's inventions.
Tesla had too many inventions. However, he never really made a lot of money out of them. He had a bigger dream: to provide free energy for all.
Nikola Tesla is not alone. There are many other inventors who invented many useful things but are not known to the public.