You don't know what you don't know until you know it.

Trick but a good make you think question

Yes…

I thought that IR does not measure temperature, but could infer temperature by the irradience. Is that the trick question? Or am I mistaken?

Frank, tisk tisk :mrgreen::mrgreen:

Oh. I was wondering if I should upgrade to a newer model because mine only measures incident radiation.

;)…