An electrical lamp is supplied with current trough a wound-up iron wire as a serial resistor. As the resistor is heated with candles, the resistance r

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An electrical lamp is supplied with current trough a wound-up iron wire as a serial resistor. As the resistor is heated with candles, the resistance rises and the lamp fades remarkably

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Size: 3520px × 2297px
Photo credit: © Kim Christensen / Alamy / Afripics
License: Royalty Free
Model Released: No

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