Physics, Astronomy & Cosmology / Re: Do you change the spectrum of radiation inside an oven if you change its shape?« on: Today at 13:26:44 »
Your conclusion was, molten gold emits more blue light than molten silver, because gold absorbs more blue light when they are cool.My view is that the electronic band structures don't change much on heating to the melting point(s).
And we know that silver is a good reflector.
We know (from the conservation of energy) that that means it can not be a good absorber.
And we know (from Kirchhoff's work) that it can not be a good emitter.
For red light, the same is true of gold.
But, for blue light we know that gold is not a good reflector.
It is a relatively good absorber and we therefore know it is a relatively good emitter.
None of this is anything other than 19th century physics.
Why are you arguing about stuff that has been known for all that time?