70. The skylines of New York and Philadelphia should not be visible from Washington's Rock on a spherical Earth

“From Washington’s Rock in New Jersey, at just a 400 foot elevation, it is possible on a clear day to see the skylines of both New York and Philadelphia in opposite directions at the same time covering a total distance of 120 miles! If Earth were a ball 25,000 miles in circumference, both of these skylines should be hidden behind over 800 feet of Earth’s curvature.”



Dubay gets his distances wrong so often I suspect that he is deliberately lying to help make his proof.  In this "proof"  he lies about distances and elevation and can’t do the maths.

Washington Rock State Park is 47 miles from Philadelphia and 27 miles from New York.  47+27 = 74 so Dubay's claimed 120 miles is a blatant lie even by his standards. 

The highest elevation in Washington Rock is over 500 feet not 400 feet.

If we ignore refraction, from Washington Rock State Park objects 256 feet above sea level are visible in Philadelphia and objects in New York are not obscured at all.

Consequently, of course we can see the skylines of Philadelphia and New York from Washington Rock State Park.

Dubay also gets his visibility calculations wrong because he does not take into account the height of the observer.



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