The greatest scientist
Thomas Alva Edison
Background 11th February, 1847 American scientist and inventor the 7th and the last child mother (school teacher) father (grocery shopkeeper) started to talk at age 4 attended school for only 3 months
built a science laboratory at basement at age 10 Background built a science laboratory at basement at age 10 suffered from ear problem train accident at age 15 became a telegraph assistant at age 16
Contributions phonograph kinetoscope light bulb kinetograph telegraph
The structure of a bulb inert gas filament 惰性氣體 support wires wires (for electricity to pass through)