Re: 683 lm/W, how was this calculated?

On Jul 29, 7:59 pm, d...@xxxxxxxxxxxxxx (Don Klipstein) wrote:

I figured a square centimeter of blackbody at the melting point of
platinum emitting about .892 watt in the 400-700 nm range.

Are you sure? Using Planck's law and multiplying by V(lamda) I get
0.318 W/cm^2 for a black body at 2042 K.

Can anyone confirm this?

.

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