Sundialists > >Sundialists know well the shadow of the gnomon of the vertical type sundial > >on the wall rotates anticlockwise. > > > Well, this is true only if the wall's declination is lower than +/- 90 > deg. If the wall looks, so to say, NorthEast or > NorthWest the hours rotate clockwise. You'll probably get an hiatus, but > the sense of rotation is clockwise.
Indeed, that's just so. >and they were more or less similar to an spherical sector (its name was >scaphe) where the shadow of a needle >moved from left to right, ie, clockwise. But, if we face to the north, the shadow of a needle on the scaphe and the movement of the stars rotate anticlockwise. I have heard of the anticlockwise-rotating clock in Venezia and Praha. Of course, I think, they are the exceptional clocks. Anyway, as we face to the south to feel the time from the sun, clockwise-move may be natural for people on the north hemisphere. Thanks for all. Sumi Yoichi -
