Edison was a great inventor in human history. After only three months of formal education, he finally obtained more than 1 invention patents. However, in his later years, Edison was no longer determined to make progress. He once said a sentence that stunned us: "Don't give me any advice in the future, because any of your ideas have already occurred to me."
in 1882, after the incandescent lamp was completely recognized by the market, Edison's electric company began to establish the power grid, thus beginning the "power age". Edison's electric company relies on direct current to transmit electricity. Soon, AC technology began to emerge, but Edison never recognized the value of AC. With his prestige, Edison gave speeches everywhere, spared no effort to attack alternating current, and even publicly ridiculed that the only purpose of alternating current was to make an electric chair to kill people! This made westinghouse Company, which developed AC technology, unable to lift its head for a time.
but a moment is not equal to a lifetime. Later, people who worshipped Edison were surprised to find that alternating current was actually much stronger than direct current in the face of iron facts! So people became angry, and the employees and shareholders of Edison Electric Company were even more ashamed and decided to delete the word "Edison" from the company name.