Flat Earth Science

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org.flatearthscience/flatearthscience-orgv1.0.0 Domain verified

Earth curvature, horizon, flight, Sun and daylight calculators plus tested flat-earth claims.

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https://flatearthscience.org/api/mcp

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calculate_curvature Read-only

Calculates how much of a distant target the Earth's curvature hides, from the surface distance, the observer's eye height, the target's height and an assumed refraction coefficient. Returns the hidden and visible height, the tangent-plane drop, the horizon distance and dip, the maximum mutual sight-line range and the midpoint bulge on a smooth sphere of radius 6,371.0084 km.

distancenumber, required

Surface distance between the observer and the target, along the ground: 0 to 1000 km, or 0 to 621 miles when units is imperial.

unitsstring

Metric uses kilometres and metres; imperial uses miles and feet. Metric without it.

eyeHeightnumber

Height of the observer's eye above the surface: 0 to 1000 m, or feet when units is imperial. Defaults to 2 m (6.56 ft).

refractionnumber

Assumed refraction coefficient k from -0.3 to 0.3: 0 is straight rays and positive values bend rays toward the surface. Defaults to 0.

targetHeightnumber

Height of the target's top above the same surface: 0 to 1000 m, or feet when units is imperial. Defaults to 10 m (32.8 ft).

Argument	Type	Description
to*	string	Second city, one of the website's 20 cities: Anchorage, Auckland, Buenos Aires, Cape Town, Dubai, Johannesburg, Lima, London, Los Angeles, Mexico City, Moscow, Mumbai, Nairobi, New York, Perth, Santiago, São Paulo, Singapore, Sydney or Tokyo.
from*	string	First city, one of the website's 20 cities: Anchorage, Auckland, Buenos Aires, Cape Town, Dubai, Johannesburg, Lima, London, Los Angeles, Mexico City, Moscow, Mumbai, Nairobi, New York, Perth, Santiago, São Paulo, Singapore, Sydney or Tokyo.

Argument	Type	Description
country*	string	Greenland, Alaska, Russia, Canada, United Kingdom, Australia, India, Brazil or Africa.
latitude	number	Latitude in degrees to move the country to, north positive: -85 to 85. Defaults to the equator, 0.

Argument	Type	Description
id	string	Exact claim id returned by an earlier search, for the full claim, verdict and evidence.
query	string	Words to look for in a claim's title, topic or summary, such as moon landing or horizon. Empty lists every claim.

Argument	Type	Description
date	string	UTC date as YYYY-MM-DD, from 1900 to 2100. Defaults to today in UTC.
place	string	City, one of Anchorage, Auckland, Buenos Aires, Cape Town, Dubai, Johannesburg, Lima, London, Los Angeles, Mexico City, Moscow, Mumbai, Nairobi, New York, Perth, Santiago, São Paulo, Singapore, Sydney or Tokyo. Not needed when a latitude is given.
latitude	number	Latitude in degrees, north positive: -90 to 90.
longitude	number	Longitude in degrees, east positive: -180 to 180. Defaults to 0 when only a latitude is given; it sets the UTC sunrise and sunset times.

Argument	Type	Description
to	string	Arrival city, one of Anchorage, Auckland, Buenos Aires, Cape Town, Dubai, Johannesburg, Lima, London, Los Angeles, Mexico City, Moscow, Mumbai, Nairobi, New York, Perth, Santiago, São Paulo, Singapore, Sydney or Tokyo. Not needed when toLatitude and toLongitude are given.
from	string	Departure city, one of Anchorage, Auckland, Buenos Aires, Cape Town, Dubai, Johannesburg, Lima, London, Los Angeles, Mexico City, Moscow, Mumbai, Nairobi, New York, Perth, Santiago, São Paulo, Singapore, Sydney or Tokyo. Not needed when fromLatitude and fromLongitude are given.
toLatitude	number	Arrival latitude in degrees, north positive: -90 to 90.
toLongitude	number	Arrival longitude in degrees, east positive: -180 to 180.
fromLatitude	number	Departure latitude in degrees, north positive: -90 to 90.
fromLongitude	number	Departure longitude in degrees, east positive: -180 to 180.

Flat Earth Science

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calculate_curvature Read-only

Flat Earth Science

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calculate_curvature Read-only

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Argument	Type	Description
units	string	Metric uses kilometres and metres; imperial uses miles and feet. Metric without it.
distance*	number	Surface distance between the observer and the target, along the ground: 0 to 1000 km, or 0 to 621 miles when units is imperial.
eyeHeight	number	Height of the observer's eye above the surface: 0 to 1000 m, or feet when units is imperial. Defaults to 2 m (6.56 ft).
refraction	number	Assumed refraction coefficient k from -0.3 to 0.3: 0 is straight rays and positive values bend rays toward the surface. Defaults to 0.
targetHeight	number	Height of the target's top above the same surface: 0 to 1000 m, or feet when units is imperial. Defaults to 10 m (32.8 ft).