tag:blogger.com,1999:blog-444127222645822590.post8674513321656939841..comments2023-06-30T05:53:07.657-07:00Comments on My Σlegant Universe: Experimental Proof of Planck's Constant using LEDAndrew C.http://www.blogger.com/profile/09225698632099502236noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-444127222645822590.post-74382163021255720722019-01-30T22:10:24.866-08:002019-01-30T22:10:24.866-08:00We first developed this demonstration in 1973. Gl...We first developed this demonstration in 1973. Glad it's still in use. The idea that LED's that 'light up' (admittedly not an absolute measurement) at 1.6 volts emit 1.6 ev photons and similarly for other colors and voltages was the inspiration for the demo we did at the American Association of Physics Teachers at Argonne Labs.<br /><br />There's been quite a bit of refinement since then, in the procedures needed to get more certain results, but it's still the same demo. in its essence. Thanks for the write-up.<br /><br />Patrick J. and Leah R. O'Connor retired physics teachersAnonymoushttps://www.blogger.com/profile/17582489293403951343noreply@blogger.com