A good egg sinks in water, but by adding some salt to the water we can make the egg to float. Now the question here is not about the sinking or floating of egg. What we need to know is the way to identify the raw eggs from the boiled ones. Raw or boiled experiment helps us a way to pick the boiled ones without breaking the eggs. For this experiment we need a boiled egg and a raw egg, just that’s all.
Try it yourself
- Boiled egg
- Raw egg
- A bowl
- A marker
Step 1: Use the marker and mark A on one egg and B on the other egg (One of them is boiled and the other is raw. We do not know which one is boiled and which one is raw).
Step 2: Keep the eggs on a flat platform. Rotate the eggs and see if there is any difference in their rotation.
You will notice that one of the eggs is spinning well while the other doesn’t spin so well.
Step 3: Now break the eggs into the bowl. You will notice that the egg that spun well is the boiled one and the other one is raw.
To test the accuracy of the result, you can try the same raw or boiled experiment with two other pairs of raw and boiled eggs.
Logic of Raw or Boiled Experiment
Why a hard-boiled egg spins faster than a raw egg? We know that when an egg is hard-boiled, the egg inside gets solid. The raw egg is liquid inside. When we spins the raw egg, the liquid inside has a tendency to stay at equilibrium. Due to this tendency of the raw egg we will experience a poor spinning of raw egg. However, if try stopping the rotation of a hard-boiled egg, it will stop instantly but the raw egg doesn’t. The logic is the same; the liquid inside the raw egg tends to continue the state it is (that is a moving state after you spin it) and refuse to stop instantly.