Isotropy and anisotropy: When a material is attacked by a liquid or vapor etchant, it is removed isotropically (uniformly in. all directions) or anisotropic etching (uniformity in vertical direction).
Some Questions Do Remain: 1  If the Earth was flat, we could travel to the place where the Earth and sky met. But we canât. 2  If the Earth was flat, we could reach the place where we could reach out and touch the Sun. But we canât. 3  If the Earth was flat, we could fall off the horizon. But we donâ 4 t. If the Earth was flat, it would simply fall.
TIL flat earthers have an explanation for time zones. So it happens that people believing in a flat Earth have an explanation for night and day occuring at the same time in different places on Earth. According to some, the Sun doesn't shine in every direction, but is rather a kind of spot light hovering above us, and rotating around the North pole.. right.