that is called convincing evidence. The only thing what is till missing is a picture of the result with and without.
>One of the great things about this list is the opportunity it affords to >admit when you (me) are mistaken. I have played around with a shadow >sharpener, and can now see that it really does project a small, fairly sharp, >central shadow narrower than the 2 minute width of the solar disk. I think >it would make an ideal device for use with an annalematic noon mark. I have >attached a .gif of how I think the sharpener works, if anyone is interested. ----------------------------------------------------------------- Thibaud Taudin-Chabot 52°18'19.85" North 04°51'09.45" East home email: [EMAIL PROTECTED] (attachments max. 500kB; for larger attachments contact me first)
