Longer-lasting light bulbs: it was complicated

Technology Connections · 2.3M views · 2023 · 33:33

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Why Hacker News recommends it

HN's go-to link for correcting the lightbulb conspiracy myth, giving an engineer's view of the lifespan versus efficiency tradeoff.

What it is

Technology Connections examines why light bulbs have the lifespans they do, including the real history of the Phoebus cartel. He shows that bulb life trades off against brightness and efficiency rather than being simple planned obsolescence.

Recommended by 9 HN commenters across 7 different months, 2023 to 2026.

What Hacker News said

Strong rec samat · 2024-07 · on “The Great Lightbulb Conspiracy (2014)”

There is an excellent video about Lightbulb Cartel by Technology Connections, highly recommended if you want an engineers perspective, with no 'great conspiracy' hype. [this video]

Recommends audunw · 2023-08 · on “List of the longest-lasting incandescent light bulbs”

Technology Connections talked a lot about this and the supposed planned obsolescence of light bulbs [this video] TL;DW: (if I rember correctly) Bulbs with shorter lifespans are generally more energy efficient. There was good reasons to not making bulb that last forever.

Recommends TaylorAlexander · 2023-10 · on “The Anatomy of a Smart Bulb”

Honestly that story is really not as simple as people suggest it is. There is a tradeoff between bulb life and brightness and standardization may have been good for the industry. Technology Connections does a thoughtful deep dive in to this story in this recent video: [this video]

Recommends PaulKeeble · 2023-10 · on “Apple's Blue Ocean”

Its a bit of a myth for ever lasting bulbs, its more complicated than that. The life time was a trade off of colour and brightness. If you made them very red shifted and quite dim then there are bulbs that are very old still around, but they don't produce much light and never did. The harder you drive the filament the better the light properties but the quicker it died. The industry choose a point for trade offs as a standard. You can watch about the history of it on Technology connections. [this video] Saying that the Dubai Philips LED bulbs really do last a lot longer since they have twice the filaments and run the filaments a lot less hard as a result (as well as being more efficient). It is p

Recommends mmkhd · 2024-06 · on “How to get stuff repaired when the manufacturer don't wanna: take 'em to court”

Nice video from the well known channel Technology Connections: [this video] => It's complicated. Yes, there was a cartel, but it was not all bad. There were legitimate reasons to go for 1000h light bulbs.

Recommends Youden · 2024-06 · on “How to get stuff repaired when the manufacturer don't wanna: take 'em to court”

It wasn't as simple as them wanting to make more money: [this video] Key points from an AI summary: - Incandescent bulbs had to balance factors like light output, efficiency, and lifespan - hotter filaments produced brighter, whiter light but reduced bulb lifespan. - Longer-lasting bulbs were less efficient and produced dimmer, yellower light, so they were not simply "better" products being suppressed. - The 1,000 hour target was a reasonable compromise that balanced these competing priorities, not necessarily a sinister plot. - Even after the Phoebus cartel dissolved, the 1,000 hour lifespan remained the industry standard for general-purpose incandescent bulbs.

Recommends torginus · 2024-08 · on “East Germany invented 'unbreakable' drinking glasses”

Actually Technology Connections made a great youtube video on this: [this video] The gist is that by running bulbs at a lower power, you can greatly prolong its life, but the downside is that it doesn't heat up as much, and since emissions spectrum correllates with temperature, ends up being much worse at converting electricity to light, which ends up being not worth it.

Recommends RulerOf · 2024-11 · on “The capacitor that Apple soldered incorrectly at the factory”

It's true that the Phoebus cartel arranged to have light bulbs die after a certain number of hours, but bulb lifetime is a trade off between lumens, filament life, and energy consumption. The cartel-defined lifetime limit sits very close to the sweet spot for all of those metrics for incandescent bulbs. Technology Connections explained this well in a video about a year ago: [this video]