Wolke found that a hot sidewalk might only get up to 145° F. Once you crack the egg onto the sidewalk, the egg cools the sidewalk slightly. The pavement of any kind is a poor conductor of heat, So lacking an additional heat source from below or from the side, the egg will now cook evenly.
Can You Fry An Egg On the Sidewalk In Phoenix?
Spoiler alert: The sidewalk can not conduct enough heat to cook an egg, as concrete’s maximum temperature – according to the laws of thermodynamics – is 145° F, While the minimum heat required to really firm up the proteins in an egg is 158° F.
At what temperature will an egg fry on a sidewalk?