sandy, clackamas county, portland metro, oregon land for sale: 1 - 15 of 80 listings
Absolutely no curvature of the earth can be seen. And the camera does a 360 turnaroundâ¦ The horizon is always at the eye-level. Logically, on a ball-earth, the horizon should be gradually lower as we go up in the air. The curvature of the earth should be seen far under 110 000 feets according to the Earth Globe theory. Open your eyes and see the evidence.
And in order to see all that earth through a view port of diameter $d$, you need to be closer than distance $L$ from the outer part of the view port, so $$L < \frac{d}{2\tan\theta}$$ It should be clear from this diagram that you never even see half the earth - and that being close to the view port is essential to see enough. If the need is to see all of earth within a 135Â° view angle ($2\theta$ in the diagram) then we can obtain $h$ from $$(R+h) \sin(\frac{135}{2}) = R\\ h = R(\frac{1}{\sin 67.5} - 1) = 0.082 R = 525 km$$