[NikolaeVarius]

That video only references it as a way of verifying temperature, not a cooking technique.

I don't understand the claim that cooks wouldn't know what this would be called.

[asguy]

She says "the proper temperature",.. and then starts cooking with the pan. Thus implying that the pan should be that hot to use it, for cooking.

[NikolaeVarius]

Your claim was

> Your omelettes will float on a bed of steam.

Due to the effect. Not that the effect can be used to judge hotness of the pan.