tag:blogger.com,1999:blog-5439168179960787195.post2249368805506216711..comments2024-03-28T17:13:01.117+10:00Comments on Condensed concepts: A video worth showing non-scientistsRoss H. McKenziehttp://www.blogger.com/profile/09950455939572097456noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-5439168179960787195.post-82632096848321582202015-10-18T03:04:08.738+10:002015-10-18T03:04:08.738+10:00It might be just the way they were set up for the ...It might be just the way they were set up for the drop, but it seemed to me that at the very beginning of the drop with air, they were accelerating at the same rate, as we would expect.<br /><br />Also, I was surprised to see any disturbance at all of the feather as it began to drop. I guess that was because there was tension in the fibres holding up the weight of each strand, and once there was no effective gravitational field, they went back to a neutral position.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-29518346187236599862015-10-16T20:49:49.674+10:002015-10-16T20:49:49.674+10:00I use this video in first year classical mechanics...I use this video in first year classical mechanics class. It's really a terrific demonstration.<br /><br />What I like the most is the visible joy of Cox and the people in the control room, when they see with their own eyes what they (probably) all know ought to happen.NBChttps://www.blogger.com/profile/01563407757122540157noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-66563903944670278592015-10-16T12:50:41.523+10:002015-10-16T12:50:41.523+10:00They also did this on the Apollo 15 flight (youtub...They also did this on the Apollo 15 flight (youtube "Apollo 15 feather vs hammer".<br /><br />I remember being amused at my instinctive response: the hammer was too slow and the feather too fast!<br /><br />I also couldn't help but think of the "cost" of the experiment. They would have needed the hammer anyway and I think the cost of sending a feather to the moon was worth it.Anonymoushttps://www.blogger.com/profile/07568228295569736055noreply@blogger.comtag:blogger.com,1999:blog-5439168179960787195.post-63979628688457519492015-10-16T10:53:38.677+10:002015-10-16T10:53:38.677+10:00I've never seen a feather bounce like that. N...I've never seen a feather bounce like that. Nice.Seth Olsenhttps://www.blogger.com/profile/09304457461800104790noreply@blogger.com