Sink Or Swim? The Good, The Bad, And The Eggly.

by outpostbabu


No rose without a thorn. While the egg cache is a great find it brings with it the question of edibility. Having no idea how old these eggs are or which of them are the newest I can’t put them to their best use, which is to say, I can’t eat them. But… how do we know they’re bad?

One way to tell is to see if the egg floats like a duck. An egg that sinks is edible and therefore not a witch. One that floats has gone bad. Who am I that is so wise in the ways of science? I read about it on the internet.

We have approximately three possible states. The egg will float because its porous shell has sat so long that the liquid inside has partially evaporated. This is a bad egg. Or the egg will sink if it has not lost so much liquid to be bad. Or it will be somewhere in between in which case it will sink but one end will point upwards.

I have performed this experiment in the lab with the 34 remaining eggs in the cache.

Sir Walter Romeo Riley contests this exclaiming “Those belong in a museum!” Ignored.

The setup is simple. The eggs are cleaned up and placed in cartons. A tall vase is filled with water.


The procedure is also simple. Each egg is dropped in the vase. The egg’s buoyancy is then carefully evaluated.

You can watch the experiment in all its scientific glory here. Flickr cut off the last bits so oh well.

The results are: Each of the 34 eggs sank at varying speeds. Most settled with a hardy thunk while others coasted down at a more leisurely speed. Several pointed slightly upwards indicated a more advanced age. I noticed too that in these, if you shake them, you can feel the insides moving around.

That’s pretty exciting huh?

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