Thomas Edison HS

thomas edison  In 1868, Edison moved to Boston where he worked in the Western Union office and worked even more on inventing things In January 1869 Edison Thomas Alva Edison, born in Ohio on February 11, 1847, was one of the most well-known inventors of all time He spent a few of his early years in formal

Since telegraphers not only sent and received messages but had to keep the equipment running, Edison learned a lot about practical electricity-- Thomas Alva Edison นักธุรกิจและนักประดิษฐ์ชาวอเมริกัน ที่มีสิทธิบัตรเกี่ยวกับสิ่งประดิษฐ์ในสหรัฐอเมริกา รวมกันกว่า 1,093 ฉบับ

135 THOMAS EDISON , JR Edison National Historic Site 03 136 WILLIAM EDISON Edison National Historic Site 03 137 MARION EDISON Edison In the late 1870s, Edison designed a vacuum bulb, in which a metal filament could be heated to create light One night, after absent-mindedly