3 ms·
Smart, reproducible technique! I do hope you are being careful with that: heating liquids past their boiling point can potentially create a superheated state. V
by isoprophlex 5y ago
Smart, reproducible technique! I do hope you are being careful with that: heating liquids past their boiling point can potentially create a superheated state. Very clean containers in a microwave are said to be especially good at causing this.
https://en.wikipedia.org/wiki/Superheating#Occurrence_via_microwave_oven https://en.wikipedia.org/wiki/Superheating#Occurrence_via_mi...
I've personally never encountered this with water, but have seen it happen with diethyl ether and dichloromethane (at ~40 deg C, so much less scary)
- kwhitefoot 5y agoIf the starting temperature is 20C then to get to boiling you need to add 80 kelvin * 1000 gram * 4.2 joule/gram = 336 kJ to get to 100C. At 1000 W that takes 336 seconds, or 5 minutes 36 seconds. In practice my 850 W microwave takes nine minutes to raise a litre of milk to 85C from fridge temperature so I don't think there is too much risk of boiling.