Planck and the light sensor

[Erik Josefsson]

Hi Erik

I did not measure the light with filters but I measured the polarized light passing through a polarizer (Malus law) and I saw that telephon sensor cuts low intensity light. To the contrary SensorTag light sensor measures the light intensity correctly.

https://phyphox.org/forums/showthread.php?tid=1221

Hi solid, thanks will look soon.

I guess the sensor is "calibrated" according to the "Luminous efficiency function"

https://en.wikipedia.org/wiki/Luminous_e...y_function

and that cuts red light dramatically.

But if you pick a 10 nm infrared slice of what comes trough as a signal, then you could maybe get approximate values of the temperature?

This is great: https://www.geogebra.org/m/rYP7WA3h

I attach a picture of the planck curve at the tungsten melting point.

Best regards.

//Erik