tag:blogger.com,1999:blog-12611067.post6203475238157899011..comments2023-10-31T23:39:22.393+07:00Comments on Interesting Things: (พยายาม)ทำไอศครีม (พยายาม)ปรับปรุงแอร์น้ำแข็ง เล่นตะเกียบลมKo Saipetchhttp://www.blogger.com/profile/04496445868861703506noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-12611067.post-1408621064035604292014-06-26T22:18:50.263+07:002014-06-26T22:18:50.263+07:00Let's discuss this in person with diagrams :-)...Let's discuss this in person with diagrams :-)Ko Saipetchhttps://www.blogger.com/profile/04496445868861703506noreply@blogger.comtag:blogger.com,1999:blog-12611067.post-52464222289218132782014-06-26T14:09:47.325+07:002014-06-26T14:09:47.325+07:00Great activities and demonstrations. The kids clea...Great activities and demonstrations. The kids clearly loved it. You were a rock star with the coanda effect demo!<br /><br />Speaking of which, I'll have to have you explain it with some diagrams when I see you next. As far as I have figured out so far:<br />(1) the airflow from the blower prefers to flow along the curved surface of the ball<br />(2) By newton's third law, this means the surface is drawn toward the flow (except, I guess, for the point on the ball directly along the ray of the blower)<br />(3) because the ball is symmetrical with respect to the ray of the blower, the net force from (2) is back along the ray of the blower.<br /><br />is that a good way to think about it?<br />My intuition is that this explanation doesn't capture the fact that the system is so stable.JGR314https://www.blogger.com/profile/11702319994021721608noreply@blogger.com