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1 янв 1840 г. - Warren de la Rue Made a design with platinum

Описание:

Enclosed a coiled platinum filament in a vaccum tube and passed electric current through it

Добавлено на ленту времени:

history of light bulb

6 фев 2020

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219

Дата:

1 янв 1840 г.

Сейчас

~ 185 г назад

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