Timeline for Microwaving a glass of water, what happens?
Current License: CC BY-SA 3.0
27 events
| when toggle format | what | by | license | comment | |
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| Apr 29, 2020 at 8:56 | comment | added | Pole_Star | Long story short,It explodes.:) | |
| Apr 23, 2020 at 16:48 | comment | added | An enthusiast | The heating effect in a microwave heater I think is due to covectional currents of rotation of water molecules to the substance may be microwaving of the same substance (water) may had caused something unexpected rather than just getting heated up | |
| Jan 17, 2018 at 19:57 | answer | added | ErikB | timeline score: 0 | |
| Dec 20, 2016 at 14:26 | answer | added | Arvin Kushwaha | timeline score: 0 | |
| Dec 4, 2016 at 14:13 | comment | added | Karl | @Evan Dielectric loss is just another word for "inelastic interaction with an electric field". That can be the electron shell, but in this case it is forced (as opposed to resonant) rotation/vibration of polar molecules. | |
| Dec 2, 2016 at 20:29 | comment | added | Karl | @ByteCommander (Di-)electric properties of materials are a subject in chemistry as much as in physics. In the sense that many chemists understand a lot more about it than many physicists. (Except for the standing wave pattern in the microwave oven, which we all gladly leave to you electrical engineers. ;-)) | |
| Dec 2, 2016 at 19:05 | comment | added | Lumberjack | As luck would have it, they also did an episode that addressed superheated microwaved water too. youtube.com/watch?v=1_OXM4mr_i0 | |
| Dec 2, 2016 at 19:03 | comment | added | Lumberjack | Reminds me of a Mythbusters episode I watched recently. They tested the theory that watering plants with water that was first boiled in a microwave would kill the plants. In fact they found the exact opposite. The plant that was watered with microwaved water actually grew taller than the control plants. | |
| Dec 2, 2016 at 18:13 | history | edited | paracetamol | CC BY-SA 3.0 |
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| Dec 2, 2016 at 11:43 | history | edited | paracetamol | CC BY-SA 3.0 |
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| Dec 2, 2016 at 5:11 | comment | added | Evan | Actually it is neither :) Microwave ovens (usually 2.4 GHz) are too low a frequency to effectively excite molecular vibrations or rotations. Heating of water in a microwave oven comes from [dielectric loss] (en.wikipedia.org/wiki/Dielectric_loss). This is when the microwave electric field pushes the electrons back and forth (rather than the atomic nuclei, as in molecular vibrations and rotations). The moving electrons exhibit some loss similar to ohmic heating in conductors. | |
| Dec 1, 2016 at 19:15 | history | edited | paracetamol | CC BY-SA 3.0 |
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| Dec 1, 2016 at 18:52 | comment | added | Byte Commander | I'm not too experienced on this site, but wouldn't this question be more suitable for Physics? | |
| Dec 1, 2016 at 18:29 | history | edited | paracetamol | CC BY-SA 3.0 |
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| Dec 1, 2016 at 18:17 | comment | added | hBy2Py | @MaxW That's what I thought for a long time, too, but this Wikipedia article cites this paper as part of an argument that it's actually excitation of the broad vibrational absorption of the hydrogen bonding network in water. | |
| Dec 1, 2016 at 15:19 | history | tweeted | twitter.com/StackChemistry/status/804344159473729536 | ||
| Dec 1, 2016 at 15:09 | answer | added | Luaan | timeline score: 15 | |
| Dec 1, 2016 at 14:49 | comment | added | vapid | youtube.com/watch?v=2FcwRYfUBLM | |
| Dec 1, 2016 at 14:46 | comment | added | Zhe | I would've considered "explosion" a valid answer with justification. It's reasonably easy to superheat water in a glass container that is very smooth. Superheated water is above the boiling point but not boiling and will boil very violently given a shock or seed of some kind. | |
| Dec 1, 2016 at 12:57 | history | edited | paracetamol | CC BY-SA 3.0 |
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| Dec 1, 2016 at 12:16 | comment | added | Mast | The glass is quite irrelevant. The water gets heated by the microwave and the glass gets heated by the hot water. The rest is all nonsense. | |
| Dec 1, 2016 at 12:00 | history | edited | paracetamol | CC BY-SA 3.0 |
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| Dec 1, 2016 at 11:21 | comment | added | MaxW | Microwave radiation is too low in energy to cause molecular vibrations. It causes molecular rotations. | |
| Dec 1, 2016 at 10:51 | comment | added | Stian | I do this all the time, However for the good reasons in the answers above I put a single ceramic Raschig ring in there whenever I use clear glass. I have one at home, stolen from the university 10 years ago for that very purpose. But then again, I am a nerd. | |
| Dec 1, 2016 at 10:25 | answer | added | Karl | timeline score: 29 | |
| Dec 1, 2016 at 9:53 | answer | added | Whit3rd | timeline score: 8 | |
| Dec 1, 2016 at 9:19 | history | asked | paracetamol | CC BY-SA 3.0 |