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A comment on The argument for switching off lights at night. Parent comment

Re:The argument for switching off lights at night by etrautmann on Monday July 26, 2021 @01:31AM (#27956010)
Isn’t the ballast only required for a fluorescent bulb?
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Re:The argument for switching off lights at night by masklinn on Monday July 26, 2021 @02:30AM (#27956335)
They probably mean lampshade / directionality. Ballasts are a current-limiting device, they would not influence the light geometry.
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Re:The argument for switching off lights at night by jonstewart on Monday July 26, 2021 @01:24PM (#27962215)
They meant the LED device, ie “bulb.” DC’s transportation department referred to it as a ballast; that might be inaccurate.
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