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The LED's Challenge to High Pressure Sodium

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Further reading 1

How do you update on evidence—and choose what to ask next? →A test result and a Wordle clue both rule out possibilities. The crucial difference is whether you already know the result or still have to choose the question.This video helps answer · On which side of the building did the saving occur?

Caption notes

An LED retrofit’s energy use and the spectrum emitted by sodium lighting answer different design questions. The presenter compares measured savings with how easily narrow-spectrum light can be rejected in astronomical observation.

Archived captions (transcription method unspecified) ↗
Original passages · 2
55% of the energy of the high pressure sodium lamps it replaced.
The LED's Challenge to High Pressure Sodium · ▶ 3:22–3:30
their nearly monochromatic light output can easily be filtered out
The LED's Challenge to High Pressure Sodium · ▶ 10:56–11:01

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