As Professor Joad used to say, it all depends what you mean by ‘direction’. A shadow simply falls on a surface. It doesn’t have a direction.
We need a clearer statement of the question. John Foad From: sundial On Behalf Of John Lynes Sent: Monday, March 11, 2024 6:24 PM To: Bill Gottesman <billgottes...@gmail.com> Cc: sundial@uni-koeln.de Subject: Re: sundial Digest, Vol 215, Issue 2 I think there's a simpler solution. In the UK at noon the shadow of the style on a horizontal sundial faces North - away from the sun. Turn the style through 180 degrees in a horizontal plane, and its shadow at noon will face South - towards the sun! John Lynes On Mon, 11 Mar 2024 at 17:12, Bill Gottesman <billgottes...@gmail.com <mailto:billgottes...@gmail.com> > wrote: My guess on this one (without using mirrors): Point the bottom of an empty can at the sun. The shadow inside the can now points in the direction of the sun, though the definition of "in the direction of the sun" in this case is debatable. -Bill On Mon, Mar 11, 2024 at 9:33 AM Chris Lusby Taylor <clusbytay...@gmail.com <mailto:clusbytay...@gmail.com> > wrote: This reader has so far failed to see how a shadow can be in the same direction as the light source, if by that Frank means that it is between the object and the light. Perhaps Frank will enlighten us at next month's annual British Sundial Society Conference. Date: Mon, 11 Mar 2024 09:01:46 +0000 From: Frank King <f...@cl.cam.ac.uk <mailto:f...@cl.cam.ac.uk> > Of course, a shadow CAN be in the same direcion as the light. I'll leave that as an exercise for the reader :-) --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
