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12 mo. ago

  • Because technically the steam is dissolved in the water above its saturation point, right? If the gas were (say) CO2 instead of steam, wouldn’t “supersaturated” be the correct term?

    If the gas were CO2 instead of steam, CO2 would be the solute, and water the solvent. In that case the term supersaturated would make sense because the solvent contains more solute than it can handle under normal conditions. The steam is not disolved in the water. The microwaved water is unable to form steam in the first place due to a lack of available nucleation sites.

    I thought superheating referred to heating water over 100º by pressurizing it

    That isn't superheating. The boiling point of a given substance naturally varies with pressure. Liquid water at 200oC while pressurized sufficiently isn't superheated. It is just hotter than you expect it to be. That technique can be used to superheat something like water if heated over it's atmospheric boiling temperature while pressurized and then lowering the pressure without agitating it.

  • That's not what is happening. If you drop a bag into water the whole bag gets wet and seals the air inside causing it to float.

    Slowly lower the bag into the water so the air can escape through the dry top and it'll sink.

  • Thx Tips. Waiting 15 seconds is no guarantee the water isn't superheated. If you actually want to ensure microwaved water won't erupt put a wooden toothpick or spoon in it while nuking.

  • It is not simply 'just another method to heat water'. There is a significant difference between microwaving and kettle/stovetop. Microwaving risks superheating resulting in flash boiling causing an explosion of steam and boiling water. This is also why microwaved water has foam appear when inserting anything into it. Bubbles that 'should' have formed didn't and are now doing so at the nucleation points whatever you inserted provided.

    That foam, while an indication the water was close to erupting, is otherwise harmless but ruins the tea/coffee for me and I'm sure others too.

  • superheated, not supersaturated.

  • Actual title which makes sense: ICE Wastes $16M on Guantanamo Bay Operation as All Migrants Returned to US

  • Don't forget rusty spoons

  • If you are vaccinated properly (2 doses last I checked) you will be fine. Isolate is really your only other option. It's that contagious. Thankfully, as you're old enough to ask here if you do come down with the full illness it'll suck but you'll survive unless you have a compromised immune system.

    Get vaccinated if you haven't and check if you need a booster if you have.

  • Why were there provincial barriers to trade in the first place?

  • A new botnet malware named 'Eleven11bot' has infected over 86,000 IoT devices, primarily security cameras and network video recorders (NVRs), to conduct DDoS attacks.

    The botnet, which is loosely linked to Iran, has already launched distributed denial of service (DDoS) attacks targeting telecommunication service providers and online gaming servers.

  • Wish the company name was included. They seem to have their shit together.

  • heh, I immediately thought: "what, was she putting keys in the ignitions?"

  • I'm sure NASA figured out a way, but how exactly does a vacuum work in space?