Absorbing Surface Pressure Is Irradiance over Speed - Electromagnetic Radiation Pressure and Momentum Step by Step

An absorber pressure claim divides checked irradiance by stated training speed. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Absorber pressure is irradiance over speed

The speed is an explicit training value, not the real speed of light.

p=\frac{I}{c}=\frac{6}{6}=1\ \text{Pa}

The absorber mode sets the multiplier

For an absorber the multiplier is one.

\hbox{mode}=\hbox{absorber},\quad p=1\ \text{Pa}