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the claim

Incandescent bulbs produce more heat than light.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that incandescent bulbs produce more heat than light?

Yes. Multiple reference and peer-reviewed sources state that typical incandescent bulbs convert only a small fraction (under 5% to about 10%) of input energy into visible light, with the rest emitted as heat, and one encyclopedia entry directly says older incandescent bulbs produce more heat than light.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

Evidence for · 8
Incandescent light bulb
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Incandescent light bulb. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Incandescent_light_bulb

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More for · 7
Do infrared lamps provide more heat than incandescent lamps?
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Do infrared lamps provide more heat than incandescent lamps?. (n.d.). physics.stackexchange.com. https://physics.stackexchange.com/questions/154723

Does the phase-out of incandescent light bulbs measurably reduce overall electrical power consumption?
2013
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Does the phase-out of incandescent light bulbs measurably reduce overall electrical power consumption?. (2013). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/18272/does-the-phase-out-of-incandescent-light-bulbs-measurably-reduce-overall-electri

Shouldn’t the net Poynting vector at a resistor or incandescent light bulb be zero?
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Shouldn’t the net Poynting vector at a resistor or incandescent light bulb be zero?. (n.d.). physics.stackexchange.com. https://physics.stackexchange.com/questions/679146

Production of CNT Yarns from Methane Gas for Use as Filaments in Incandescent Bulbs: Thermodynamic Properties of As-spun CNT Yarns
2019
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Production of CNT Yarns from Methane Gas for Use as Filaments in Incandescent Bulbs: Thermodynamic Properties of As-spun CNT Yarns. (2019). doi.org. https://doi.org/10.1088/1742-6596/1378/2/022019

Encyclopedia of energy engineering and technology
2007
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Encyclopedia of energy engineering and technology. (2007). archive.org. https://archive.org/details/encyclopediaofen0000unse_f6m7

Tuning phosphors for better white light
2018
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Tuning phosphors for better white light. (2018). doi.org. https://doi.org/10.1021/cen-09646-cover

The lightbulb that really is a better idea [Tools & Toys
2011
Get citation
The lightbulb that really is a better idea [Tools & Toys. (2011). doi.org. https://doi.org/10.1109/mspec.2011.5676373

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