Arthur Crabtree wrote:I think there's some issue that the red ball can't be seen clearly against the shadow that it casts on the pitch, just before and after it pitches, when the lights are on.
Not sure if its just a bit of an old wives tale myself. Of course, if you are to light up something with harsher or more intense light (like a floodlight), the contrast between the bright surface light illuminating an object and the dark side would be far more pronounced, leading to more intensive/dark shadowing. And as discussed above, the red ball is hard to pick up in the pitch dark, which is essentially what a shadow is.... hence people might conclude it make sense that having floodlights on impacts shadow/visibility.
But in reality, in overcast conditions shadows would naturally be reduced because the intensity of sunlight is lower, leading to less of a contrast between light and dark areas. We also arent talking about pitch dark, so in the daytime you are going to get a lot of reflected light softening a shadowed area by leaking light from all directions in to it. And finally, most importantly, as shadows are merely an absence of light, what happens when you use a lightening from a 360 degree angle on an object? It lights up from all angles, which eliminates shadowing completely. If you do have a shadow from the floodlights then it might be to do with a relative weakness of light source from one side, but the general boosting and reflection of light would render it at a very low intensity, and would result in the shadow being lighter than the ball, which would have no impact on visibility. The lights would also make the pitch surface lighter in contrast to the ball, which would boost visibility even more. And depending on how new the ball is, the reflection of the shiny surface also makes it brighter than the shadowing under lights..... in fact, the pink balls was designed to retain its shine for this sole reason.
Going on the above, you could make a case that in the brightest, most intense daytime sun the problem of ball shadow actually becomes the most acute. With one direct strong light source the illuminated ball would produce an intense contrast to the dark side, producing the most intensely dark shadowing.