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- Draper_point abstract "The Draper point is the approximate temperature above which almost all solid materials visibly glow as a result of blackbody radiation. It was established at 798 K (525˚ C, 977˚ F) by John William Draper in 1847.Bodies at temperatures just below the Draper point radiate primarily in the infrared band and at longer wavelengths, and emit negligible visible light. The value of the Draper point can be calculated using Wien's displacement law: the peak frequency (in hertz) emitted by a blackbody relates to temperature as follows:wherek is Boltzmann's constant.h is Planck's constant.T is temperature (in kelvins).Substituting the Draper point into this equation produces a frequency of 46.9 terahertz—which is infrared, and largely invisible except for a dull red, at a small fraction of the peak intensity, that is visible to the human eye.".
- Draper_point wikiPageID "24724562".
- Draper_point wikiPageRevisionID "604235132".
- Draper_point hasPhotoCollection Draper_point.
- Draper_point subject Category:Electromagnetic_radiation.
- Draper_point subject Category:Heat_transfer.
- Draper_point subject Category:Thermodynamics.
- Draper_point comment "The Draper point is the approximate temperature above which almost all solid materials visibly glow as a result of blackbody radiation. It was established at 798 K (525˚ C, 977˚ F) by John William Draper in 1847.Bodies at temperatures just below the Draper point radiate primarily in the infrared band and at longer wavelengths, and emit negligible visible light.".
- Draper_point label "Draper point".
- Draper_point label "Punto Draper".
- Draper_point sameAs Punto_Draper.
- Draper_point sameAs m.080k05n.
- Draper_point sameAs Q3449453.
- Draper_point sameAs Q3449453.
- Draper_point wasDerivedFrom Draper_point?oldid=604235132.
- Draper_point isPrimaryTopicOf Draper_point.