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. Edison, 1879'da elektrik ampulünü icat etti ve elektrik enerjisinin günlük yaşamda kullanılmasına olanak sağladı. But he had now lost the precise spot; and thinking he had examined the drain, turned his attention to another quarter.
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This video was uploaded to thiruvalluvan.com on 21-09-2024 18:42:36
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