How do we reconcile that the color observed by people and I assume normal cameras is orange for the casting at 1200 C in the second sample I found? We are discussing the color shown in the pictures instead of the peak emission wavelength are we not?
Why would you expect the device to look white hot when a known metal casting looks orange hot at approximately the same temperature? What am I missing? Dave -----Original Message----- From: H Veeder <hveeder...@gmail.com> To: vortex-l <vortex-l@eskimo.com> Sent: Sun, Oct 19, 2014 12:31 am Subject: Re: [Vo]:Color Temperature _Colour temperature_ refers to the *peak* emission of a blackbody whose temperature produces a peak emission within the visible spectrum. e.g. The surface of the sun is about 6000C and the peek emission is white light so it has colour temperature of white. _Incadescence_ is the *visible* light emitted by a black body at a given temperature. An iron at 800C glows red but the peak emission is in the infrared . harry On Sat, Oct 18, 2014 at 11:36 PM, Patrick Ellul <ellulpatr...@gmail.com> wrote: Hi Dave, Jed refers to: http://en.wikipedia.org/wiki/Incandescence Regards. On Sun, Oct 19, 2014 at 1:38 PM, David Roberson <dlrober...@aol.com> wrote: Take a look at the article in wikipedia about color temperature. Unless I am reading it incorrectly the color expected for a source at 1700K is quite orange. This is in line with what is reported in the latest test. Could someone take a moment to explain to me why the device should not be orange? I have seen where Jed thinks it should be white and I am at a loss. The article is located at: http://en.wikipedia.org/wiki/Color_temperature. Dave -- Patrick www.tRacePerfect.com The daily puzzle everyone can finish but not everyone can perfect! The quickest puzzle ever!
