Since I'm around that old question about an observed phenomenon came to my mind: - a cup is filled with water and heated up using a microwave oven. When I see it starting to boil, the oven is stopped abruptly. And while there is no more energy injected into the water, it boils even more for a second when the oven is stopped. So the boiling peak is (just) after the oven is stopped. Looks strange to me. - one can remark a similar phenomenon using gas. Something (probably) similar: - a saucepan is filled with water and heated up using a gas cooker. Then the water boils linearly, and some steam escapes from the top of the saucepan. When the gas is stopped, much more steam comes out of the saucepan for 1-2 seconds. Again, it looks like there is suddenly more heat going to the water, while, on the opposite, the gas was cut and no more (or much less) heat goes to the water. Does somebody know the reason? Thanks.