........When you peal an orange.....does the peel have depth?.....now....replace the orange with a jack fruit......same concept except when you peel it....its sphere underneath....so the surface does not conform to the spherical limitations....bumpy if you will.
The under lying earth beneath the mtn is supposed to still be curving.
At 15 miles a 10 story building is supposed to be hidden by the curve. With or without binoculars.
humor me....
how many miles away... would it take to hide a 100 mile tall building -- according to science™ ?
Use the calculator.
https://dizzib.github.io/earth/curve-calc/?d0=900&h0=5.5&unit=imperial
........When you peal an orange.....does the peel have depth?.....now....replace the orange with a jack fruit......same concept except when you peel it....its sphere underneath....so the surface does not conform to the spherical limitations....bumpy if you will.