Celestial haunt time and direction description board

摘要

(57) Abstract Objective Frequent appearance time and frequent appearance direction of the celestial body it is easy to know demonstrationThe planetary frequent appearance time direction demonstration board which can do is offeredru. Constitution To take the North Pole dot P on the center, from on the North Pole dot P the birdAs included the Japanese archipelago N which it does, the north which is cut in the surface which is vertical to the axis of earthAs the map of hemisphere is drawn, from the Japanese archipelago N the North Pole dotDirecting to P, from arrow i and the Japanese archipelago N which you draw aforementioned arrow iWith in converse direction in outside direction sudden facilities the rotary disk A which possesses arrow ro which is done12 dividing equally circumference, around the counter clock 0,2,4,24Agreeing the center on fixed disk B which attaches the digit, revolution ourResident in you have installed.