Did You Know Hot Water Is Heavier Than Cold Water?

When measuring the mass of hot water and cold water you will find that hot water is slightly heavier.

Hot Water Weighs More Than Cold Water

Now the actual difference is actually quite small. In fact you would need a good set of scales to be able to check the difference.

The reason why this happens though is answered by Einstein’s mass-energy equivalence theory. That is that the mass of an object is down to it’s energy content. This is accompanied with the famous equation of E=mc2, where E=energy, m=mass and c= the speed of light in a vacuum.

With hot water, the energy is of course higher so the E value is higher. Therefore the m value must also increase in order to keep the equation balanced.

It’s that simple.

 

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