Ufyukyu

7 0 $begingroup$ On a flat earth we assume that the sun is a point and that it is a distance $H$ from the ground. We put three sticks in the ground, all of height $h$ . The rays of the sun will be lines from the sun to the tip of the stick and a shadow is defined as a line segment from the bottom of the stick where it was put in the ground to the intersection point of the sun ray with the ground. On a spherical earth the sticks are stuck in the ground such that they are normal to the earth. The rays are parallel lines that go through the tips of the sticks, and the shadow is defined as the arc between the bottom point of the stick to the intersection point of the sun ray with the ground Neil Tyson demonstrated this with wells in this video: https://youtu.be/hLPPE3_DVCw?t=318 He said that the angles somehow ...