Coolidge went to work as a researcher at General Electric new research laboratory in 1905, where he conducted critical experiments that led to the use of tungsten as filaments in light bulbs.
In the early days of his employment as a researcher for the General Electric Company, he conducted critical experiments that led to the use of tungsten as filaments in light bulbs. Coolidge went to work as a researcher for General Electric new research laboratory in 1905.
Coolidge went to work as a researcher for General Electric new research laboratory in 1905. In the early days of his employment as a researcher for the General Electric Company, he conducted critical experiments that led to the use of tungsten as filaments in light bulbs.
Coolidge went to work as a researcher for General Electric new research laboratory in 1905. In the early days of his employment as a researcher for the General Electric Company, he conducted critical experiments that led to the use of tungsten as filaments in light bulbs.