tag:blogger.com,1999:blog-7590176649168185428.post6384034670143431542..comments2024-03-28T18:51:21.655-04:00Comments on SolderSmoke Daily News: Seeing EM Waves with a Coffee CanBill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7590176649168185428.post-40200827933313023262011-12-19T20:59:30.511-05:002011-12-19T20:59:30.511-05:00Neat ! I did that experiment with sound waves as a...Neat ! I did that experiment with sound waves as a science project back in 1972. Used a mic pickup on the end of a yardstick which was mixed with a reference tone. Another amp from the mixer out drove a neon lamp next to the mic. I took "pictures" of sound waves using a long exposure on a Polaroid camera and sweeping the mic/lamp in front of a speaker driven by the reference tone. Won second prize in the science fair !<br /><br />Rich VE3MKCrhesliphttps://www.blogger.com/profile/04849486198248562539noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-78349898422895330072011-12-15T00:23:42.393-05:002011-12-15T00:23:42.393-05:00Dude, use a black pen next time.
73.......Steve S...Dude, use a black pen next time.<br /><br />73.......Steve Smith WB6TNLSteve "Snort Rosin" Smith WB6TNLhttps://www.blogger.com/profile/01570621886789949035noreply@blogger.com