pre23 - bug with emitter`s temperature

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foxid
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1. if warmer - lower intensity of emmiter
2. cant reflect emmiters. its dark.
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sam75
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I reported this bug too (is it a bug ?)

max and min seem to be black and white instead of red/blue

Image
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vagos21
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Temperature changes work alright for me, all u have to do is play a bit with power too :)
Here's what it looks like:
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8000 'K
8000 'K
3200 'K
3200 'K
2200 'K
2200 'K
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vagos21
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I would also like to add how blackbody radiation works (emitters), so that people will stop asking why power increases when you set the temperature to higher values :)

taking a quote from this page:


So it's not a bug:
"So if you look at the graph you can see that the higher the temperature, the higher the total energy (which everyone would expect) and the lower the wavelengths of the peak energy."

:P
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blackbody-radiation-general.png
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face
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Here a other picture from the full electronic spectrum.
I think everyone know that x-/gamma-rays have the highest energy ;)
But i don´t know if we need a so exact light simulation.
Lux, lumen or candela would be nice...

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spectrum.jpg
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sam75
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vagos21 wrote:I would also like to add how blackbody radiation works (emitters), so that people will stop asking why power increases when you set the temperature to higher values :)

taking a quote from this page:


So it's not a bug:
"So if you look at the graph you can see that the higher the temperature, the higher the total energy (which everyone would expect) and the lower the wavelengths of the peak energy."

:P
then why give us an option to control the temperature ? why not just a power slider ?
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heydabop
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sam75 wrote:
vagos21 wrote:I would also like to add how blackbody radiation works (emitters), so that people will stop asking why power increases when you set the temperature to higher values :)

taking a quote from this page:


So it's not a bug:
"So if you look at the graph you can see that the higher the temperature, the higher the total energy (which everyone would expect) and the lower the wavelengths of the peak energy."

:P
then why give us an option to control the temperature ? why not just a power slider ?
Because it's a physically accurate representation of a black body. Read up on black bodies here. http://en.wikipedia.org/wiki/Black_Body

Temperature actually changes the color slightly, as diagrammed by the Planckian locus. Higher temperatures (~10,000° K) cause a blue tint to the light emitted, while lower temperatures (~2,500° K) add an orange-ish tint to the light.
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sam75
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heydabop wrote:
sam75 wrote:
vagos21 wrote:I would also like to add how blackbody radiation works (emitters), so that people will stop asking why power increases when you set the temperature to higher values :)

taking a quote from this page:


So it's not a bug:
"So if you look at the graph you can see that the higher the temperature, the higher the total energy (which everyone would expect) and the lower the wavelengths of the peak energy."

:P
then why give us an option to control the temperature ? why not just a power slider ?
Because it's a physically accurate representation of a black body. Read up on black bodies here. http://en.wikipedia.org/wiki/Black_Body

Temperature actually changes the color slightly, as diagrammed by the Planckian locus. Higher temperatures (~10,000° K) cause a blue tint to the light emitted, while lower temperatures (~2,500° K) add an orange-ish tint to the light.
"It goes from deep red at low temperatures through orange, yellowish white, white, and finally bluish white at very high temperatures."

as i understand it the lowest value is red not black.

Can someone from refractive's team tells us why it's not working like in maxwell ?
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heydabop
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sam75 wrote:
heydabop wrote:
sam75 wrote:
then why give us an option to control the temperature ? why not just a power slider ?
Because it's a physically accurate representation of a black body. Read up on black bodies here. http://en.wikipedia.org/wiki/Black_Body

Temperature actually changes the color slightly, as diagrammed by the Planckian locus. Higher temperatures (~10,000° K) cause a blue tint to the light emitted, while lower temperatures (~2,500° K) add an orange-ish tint to the light.
"It goes from deep red at low temperatures through orange, yellowish white, white, and finally bluish white at very high temperatures."

as i understand it the lowest value is red not black.

Can someone from refractive's team tells us why it's not working like in maxwell ?
I don't know how it works in Maxwell, but for me low temperatures definitely create an orange/red glow. You may have to raise the power when using lower temperatures, but this is expected as a lower temperature would mean less energy and thus less light.
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marco75
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i think that octane needs LUMEN, Watt and Cd,
for any architect and engineer it is necessary this thing
power it is not correct to work in interior projects!
and we should use even IES as in maxwell that it is really fantastic!
the only thing that it is really slow!!....
octane it is really good render but needs these things very very soon!!!
otherwise architects will continue use maxwell or vray... that have them..
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