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Thomas Edison (46)… two thousand different materials in search of a proper filament for the light (47) … . His assistant complained, “All our work is useless.” Edison replied (48) …, “Oh we have come a long way and we have learned a lot. We know that there are two thousand elements which we cannot use to make a good light bulb.”
surprisingly
accidentally
perfectly
confidently
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M. Ardini
Master Teacher
Mahasiswa/Alumni Universitas Gadjah Mada
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