"Above is a representation of the celestial sphere and below is that of the surface of the earth," symbolizing the emperor's possession of all territory under heaven. Colors used in paintings on ...
We identify the dome of the sky as half of the celestial sphere, onto which the inhabitants of the heavens are pasted, with the constellations themselves being infinitely deep. The lines and ...
And the determination of the moon's heat required an equally exact adaptation of the telescope's motion to the apparent movement of the celestial sphere. For so delicate is the inquiry ...
[DaveMakesStuff] demonstrates a great technique for 3D printing a sphere; a troublesome shape for filament-based printers to handle. As a bonus, it uses a minimum of filament. His ideas can be ...
and gourmet food. Ancient Chinese's worship of nature and celestial motions have cradled the Dragon Boat Festival, and the customs of the festival derived from "offering sacrifices to the dragon ...