User:Peter Mercator/Draft figures

My figures

Plainest spherical triangle

For legendre's theorem

File:Sphere geodesic 0s.svg.

File:Sphere geodesic 1sigma.svg

File:Sphere geodesic 3sigma.svg

File:Sphere geodesic 0sigma

File:Sphere geodesic 2sigma.svg

File:Sphere geodesic 4sigma.svg

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Basic geometry for a standard (ie normal tangent) cylindrical projection of the sphere

Basic geometry for a standard (ie normal tangent) cylindrical projection of the sphere

Basic geometry for a secant normal cylindrical projection of the sphere

Infinitesimal elements on the sphere and a normal cylindrical projection

Transverse mercator graticules

Geometry of sphere

The orientation of the Earth at the December solstice

Transverse mercator geometry

Spherical triangle on sphere with angles a b c.png

Sphere filled blue.svg

sphere and graticule

latitude and longitude graticule on a sphere

latitude and longitude graticule on an ellipsoid

Geodetic coordinates

Geocentric coordinates

Ellipsoidal coordinates

Ellipsoid revolution prolate aab

Ellipsoid revolution prolate aac

Angular and linear eccentricities

Ellipsoid revolution oblate aab

Ellipsoid revolution oblate aac

Spheroid

Ellipsoid revolution prolate and oblate

Ellipsoid revolution prolate and oblate aac

Tri-axial ellipsoid

ellipse with auxiliary circle

Ellipsoid revolution oblate aab auxiliary sphere

Other useful figures

Mercator small

The equidistant projection with Tissot's Indicatrix of deformation

The Mercator projection with Tissot's Indicatrix of deformation. (The distortion increases without limit at higher latitudes)

Lambert's normal cylindrical equal-area projection with Tissot's Indicatrix of deformation

Eckert VI

Figures for Clarke and OS

Photograph of Alexander Ross Clarke

Photograph of Alexander Ross Clarke around the age of 22.

Photograph of Alexander Ross Clarke with daughters

Photograph of Alexander Ross Clarke

principal lines of spirit levelling 1860

The triangulation mesh over Britain, 1860.

Clarke figure of the Earth 1860. A projection showing the meridian arcs used in computing the shape.

Title page showing Henry James as Superintendent in 1858

Title page showing Henry James as Director in 1863

Title page showing Henry James as Director-General in 1874