Hal Brandmaier
Wed, 11 Aug 2010 14:13:25 -0700
From: Hal Brandmaier Sent: Wednesday, August 11, 2010 9:36 AM To: Mike Cowham Subject: Re: Stainless Steel Spheres Mike I have recently concentrated on horizontal sundials using spheres as gnomons. My initial results were published in NASS' Compendium, Volume 15, Number 3, September,2008. I have made a number of test models using small gemstone, volcanic rock, and wood spheres to verify my analytical results. Gazing balls had been considered and rejected because those available to me were glass. Hal Brandmaier From: Mike Cowham Sent: Wednesday, August 11, 2010 8:26 AM To: sund...@rrz.uni-koeln.de Subject: Stainless Steel Spheres Dear Dialling Friends, I have just visited our local garden centre and they had a large quantity of 'Gazing Balls' on sale. These are 8" / 20cm diameter stainless steel spheres with no obvious seams or stalks, and with a mirror finish. They MUST be of use to many of you for dialling, for making globes or for ????? They are made by Gardman and they were selling two for £9.99, quite a bargain. If any of you have ideas how these can be used in dialling, I will be pleased to hear from you. If you make something from them, I am sure that we would all like to hear. Have fun, Mike Cowham. -------------------------------------------------------------------------------- --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
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