American inventor Thomas Edison made an incandescent bulb open to the public. Bamboo from Kyoto is used for the filament of the bulb.
-1983 (35 years ago from now)
At the International Association of Weights and Measures, the definition of one meter will be changed to "the distance through which light travels in vacuum between 299, 792, and 458 minutes per second".
Source: http://www.himekuricalendar.com/
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