The Thread That Refused to Die

Name: The Thread That Refused to Die
Genre: Documentary

To challenge gas and candles, Edison’s team tests unlikely materials until one carbonized thread survives through the night.

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Transcript

A carbonized sewing-thread filament burned for 13 and a half hours.
Edison’s electric-light work aimed to create an economical bulb rivaling candles, gas, and lighting oils.
Edison’s design changes and materials produced a reliable, safe, and practical electric lamp.
Edison received financial backing, assembled scientists and technicians, and tested thousands of theories.
Across the crowded bench, the work continued in motion.
Edison examined metal wire, human hair, and coconut husks.
After examining metal wire, human hair, and coconut husks, Edison chose a carbon filament.
Tests compared materials for a filament that could survive inside a vacuum.
The carbonized thread glowed inside a glass bulb under vacuum.
The successful test made electric light a practical possibility.
In December 1879, the Menlo Park complex was publicly illuminated.
I never quit until I get what I’m after.
Earlier, on November 4th, 1879, Edison applied for an improvement in electric lamps and their manufacture.
The application was for an improvement in electric lamps and their manufacture, not their invention.

The carbonized thread had survived the laboratory, but Edison now had to make an entire Menlo Park complex blaze safely before the public.

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