tag:blogger.com,1999:blog-4912713243046142041.post5294793974918236288..comments2024-03-28T12:17:44.126-05:00Comments on TYWKIWDBI ("Tai-Wiki-Widbee"): The Leidenfrost Effect is endlessly fascinatingMinnesotastanhttp://www.blogger.com/profile/01382888179579245181noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4912713243046142041.post-84038295249171195332013-10-08T20:06:30.161-05:002013-10-08T20:06:30.161-05:00Two observations.
1.) It is not temperature that ...Two observations.<br /><br />1.) It is not temperature that burns skin; it is heat flow.<br />2.) In 1992 I bought a copper-clad stainless pan set. They REALLY heated up fast, which I knew intellectually, but in the kitchen they still kept catching me off guard, burning butter and olive oil mostly. One day I spilled a little water in an over- pre-heated pan and learned about the Leidenfrost Effect, though it was 15 years later that TYWKIWDBI gave me the name.<br /><br />The small water droplet beaded up but did not boil. It floated like an air hockey puck. It also did not appear to boil away. It took around 10 minutes for it to get small enough to finally boil away. I spun it around and around in the pan, as fast as I could.<br /><br />Notes:<br /><br />A. The pan must be spotless.<br />B. The pan must be HOT - medium hot is not good enough. When the temp drops below the Leidenfrost temperature, the droplet dissipates rapidly and "normally."<br />C. With multiple droplets they will bounce off each other more often than merge.<br /><br />I've had single droplets last as long as 15 minutes.SteveGinGTOhttps://www.blogger.com/profile/00697382976006839418noreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-56749124215332101532013-10-01T06:57:01.733-05:002013-10-01T06:57:01.733-05:00Mythbusters used this effect to dip their wet fing...Mythbusters used this effect to dip their wet fingers into a pot of molten lead: http://www.youtube.com/watch?v=yTOCAd2QhGgbucaneerhttps://www.blogger.com/profile/05630311295205545919noreply@blogger.com