Hard-Boiled Eggs

Scavenger hunts, egg salad, practical jokes … what do they all have in common? Hard-boiled eggs! But, boiling an egg takes more than just water and heat, it takes finesse and science. Some Hungry Physicists may have experienced a green or gray ring forming around the yolks of their eggs.  This discoloration results from overcooking the eggs; sulfur from the egg whites bonds with iron from the yolks to form[...]