An American inventor, Thomas Edison, released an incandescent light bulb to the public. Kyoto bamboo is used for the bulb filament
- 1983 (36 years ago)
At the International Metrology Meeting, the definition of 1 meter is changed to "the distance traveled by light in a vacuum in 299,792,458 / second"
Source : https://www.himekuricalendar.com/
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