Thank you for your answer. I tried to find information about perspective projection and I think that isn't that I looking for.
I need to explain the information like this:
the object seen to 9000 meters of distance has 3mm of height. Why? because the formula to calculate this results is...
Homework Statement
Thank you very much in advance if you help me to resolve this problem. I am 3D designer and I must to defend that the object is visible from the beach but so small. sorry my english!
Please if you can contribute with formulas and solve the problem will be valued, because...