I dont know, not very high at all. I just slapped the dish on my stovetop and turned the dial to something like 3 out of 10. I'd guess somewhere in the vicinity of 120-130 degrees for not very long. It would probably start showing convection at even just 20 or so degrees above ambient, though, because after this, it kept doing it for quite a long time after being removed from even that low heat.
Nice demonstration and great visualization with the mica particles. Could you tell me at what temperature you brought the canola oil? I might use this as a demonstration of Benard convection cells at science fairs and it would be great if the temperature required to generate the cells is not alarmingly high (danger of skin burns).
Reminiscent of the Sun's own convection cells, each about the size of the UK.
I dont know, not very high at all. I just slapped the dish on my stovetop and turned the dial to something like 3 out of 10. I'd guess somewhere in the vicinity of 120-130 degrees for not very long. It would probably start showing convection at even just 20 or so degrees above ambient, though, because after this, it kept doing it for quite a long time after being removed from even that low heat.
NASA's Astronomy Picture of the Day 2017-07-31 _(»Pluto Flyover from New Horizons«)_ sent me here. Cheers!
Nice demonstration and great visualization with the mica particles. Could you tell me at what temperature you brought the canola oil? I might use this as a demonstration of Benard convection cells at science fairs and it would be great if the temperature required to generate the cells is not alarmingly high (danger of skin burns).