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https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8718294

Close-up view of an NE-2 (5mm diameter) type neon lamp. Both electrodes appear to glow simultaneously due to being powered by 60Hz alternating current, with the exposure time being longer than a full current cycle.

Original public domain image from Wikimedia Commons

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8718294

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Close-up view of an NE-2 (5mm diameter) type neon lamp. Both electrodes appear to glow simultaneously due to being powered by 60Hz alternating current, with the exposure time being longer than a full current cycle.

More