I'm about to prepare some spaghettis and to do so I need 2 liter of boiling water.
For getting the water to certain temperature (lets say 100 Celsius degrees) from a starting temperature of 15 Celsius degrees, I might opt by pouring the 2 liters of water in one single action or might choose by adding in 4 times (1/2 liter each time) so I would start with 1/2 liter, when it starts boiling add another 1/2 liters and so on until I have the 2 liters boiling.
What requires less energy for getting the 2 liters?
- There is only one pot size.
- The time required for pouring additional water is 0s.
- Pouring water despite it takes 0 seconds, does not spit any water and then there is no additional loose of temperature other than the one coming from mixing the water.
- The surface of the pot distributes the temperature homogeneously.