Yeah, they leave that out. Reminds me of some one else that we have been dealing with lately. I suppose that the wiki articles can confuse people very easily.
I may have found some support for the lower temperature. Look at my latest calculations concerning the caps and how they might be used to our advantage. A quick look at what I might expect according to those calculations yields a temperature of 873.00 C for the reactor active region surface. That number is based upon what is shown for the measured cap temperatures. I hope that I am wrong about that calculation. If accurate, the COP is a lot less than I have hoped for. Everyone keep in mind that this is preliminary and may be way off in value. The process might be flawed and we need further information before it can be trusted. That should be enough disclaimers for just about anyone reading this post. Buyer beware. :-) Dave -----Original Message----- From: H Veeder <[email protected]> To: vortex-l <[email protected]> Sent: Sun, Oct 19, 2014 2:47 am Subject: Re: [Vo]:Color Temperature The caption under the picture doesn't make it clear how long the casting has been out of the oven "Steel castings after undergoing 12 hour 1,200 °C (2,190 °F) heat treatment." I recently took up pottery so I know that when the temperature is >1200 the clay become less orange and more white. Harry On Sun, Oct 19, 2014 at 12:37 AM, David Roberson <[email protected]> wrote: 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 <[email protected]> To: vortex-l <[email protected]> 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 <[email protected]> wrote: Hi Dave, Jed refers to: http://en.wikipedia.org/wiki/Incandescence Regards. On Sun, Oct 19, 2014 at 1:38 PM, David Roberson <[email protected]> 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!
