Dear Gianni, You give us a deligthful story.
I have a problem... > ... the poles are singular points! Yes, but these singular points do not keep still! > ...to keep always vertical without > any movement... Unfortunately, "polar wandering" means that Mr Thin would have to keep moving to stay at his local pole! Also... > For our Mr. Thin it would not exist > therefore the concept of beginning of > the day, of noon, of dawn, of sunset > and of midnight (in the half the year > when he remains in the dark). In the half of the year that he remains in the dark, I think that Mr Thin would quickly discover sidereal time. He would choose an arbitrary line as a reference and work from that. As soon as the sun appeared, he would soon discover that it didn't keep the same time. Mr Thin would be a good student, though he would be very cold! Ciao Frank --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
