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RE: a

in #science6 years ago (edited)

We in the sailing community have been using this method to calculate your distance at sea from the coast from your present postion ! As the height of the lighthouse visible on the horizon when standing up with binoculars can give surprsingly accurate results when saling off the coast ! Why indeed lighthouse are famously painted with alternate red or black and white stripes as this aids in the calculation when the height of the identified lighthouse is a known and reported fact in your coastal maritime guidebook, trusted friend of any old salt at sea ! Flatearthers are idiots that do need to fall off their planet and leave us normal thinking human beings alone to concentrate on more important isuues like, why is poisonous flouride added to our water !! ) great post upvoted @kerriknox

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How close is the estimated distance (to the actual distance) when you're eyeballing it like that?

How do you know how much of the lighthouse is below visibility? I presume all lighthouses are not the same height......and...do you count the black and white stripes down as some kind of standardized measurement per stripe?

here check this and you will see how indeed that photo you published is a flat earthers worst nightmare as this is an age old method of measuring distance from a boat to the coast !!

http://www.skysailtraining.co.uk/dipping_distance.htm

Awesome example @gomeravibz. Great link too.

Yeah thanks @jasonbu ) this is the the one that will shut all these flatearther idiots mouths as there can be no denying history and the culture and knowledge of centuries of navigating on this round planet on the sea !!