Modelling a Historic Oil-Tank Fire Allows an Estimation of the Sensitivity of the Infrared Receptors in Pyrophilous Melanophila Beetles
Figure 7
View factor F1→2 between object 1 (cylinder, flame) and object 2 (beetle) as a function of the relative distance.
The height of the cylinder is equal to the diameter and the flying altitude of the beetle, HB, is normalized to the radius R of the cylinder. For large relative distances xB/R F1→2 can be reduced to (xB/R)−2.