As an egg gets older it starts to break down, so it’s density becomes less. Eventually it’s density will be less than the water so it’ll begin to float.
The egg start to decompose and produces gas. Some of that gas escapes through the shell, so the egg’s mass decreases, which causes the density of the egg vs water to drop.
The older an egg gets the more experienced it gets with swimming. I once had an egg that was so old, it could do 4 laps in an Olympic swimming pool in under a minute
Why is this though? What’s the science for making old eggs float?
As an egg gets older it starts to break down, so it’s density becomes less. Eventually it’s density will be less than the water so it’ll begin to float.
The egg start to decompose and produces gas. Some of that gas escapes through the shell, so the egg’s mass decreases, which causes the density of the egg vs water to drop.
https://www.thoughtco.com/why-rotten-eggs-float-4116957
Thanks for this explanation! I couldn’t understand how the overall mass of the egg would change, even if some of the contents turned to a gas.
The older an egg gets the more experienced it gets with swimming. I once had an egg that was so old, it could do 4 laps in an Olympic swimming pool in under a minute