Variable Collection

Comparative Orbits
A diagram of the relative orbit distances of planets in the Solar System and the variable light hitting the Earth during different seasons

A Tip for the Holidays
A new combination game to suit all seasons. Please note: Credit must appear as Courtesy of the Estate of Mrs J.C.Robinson/Pollinger Ltd/ILN/Mary Evans

Piper J-3 Cub G-AFFJ with the Everell single-blade propeller
Piper J-3 Cub G-AFFJ (msn 1165), seen with the Everell patented single-blade automatic variable- pitch propeller. The single propeller blade was balanced by a counterweight and was free to pivot

United States Navy - Grumman F6F-3 Hellcat 42874, NACA 158, of the National Advisory Committee for Aeronautics (NACA) at Moffett Naval Air Station

Lockheed NT-33A-1-LO 51-4120 (MSN 580-5414). Used for tests successively by Lockheed, Allison Division of General Motors, USAF Wright Air Development Cener

Light and Variable 1931
Humorous illustration showing a young woman perched on top of a weather vane, her short skirt revealing a lace garter from her breezy vantage point. Date: 1931

Dahlia varieties
Varieties of Dahlia superflua, the variable dahlia, the Sir Robert Peel, Harris Inimitable, and Levics Incomparable. Handfinished chromolithograph by Henry Noel Humphreys after an illustration by

Wood-sorrel or Oxalis species
Mr. Bowies oxalis, Oxalis bowiei, scalloped wood-sorrel, Oxalis crenata, many-flowered oxalis, Oxalis floribunda, and variable oxalis, Oxalis variabilis

Variable cracker and Indian orange-tip butterfly
Variable cracker butterfly, Hamadryas feronia 1, 2, and Indian species of orange-tip butterfly, Iphias glaucippe 3, 4. Handcoloured lithograph from John O

Variable dendrobium orchid, Dendrobium mutabile (Three-knobbed dendrobium, Dendrobium triadenium). Handcoloured copperplate engraving by George Barclay after an illustration by Miss Sarah Drake

Variable oxalis, Oxalis variabilis. Handcoloured copperplate engraving by S. Watts after an illustration by J.T. Hart from Sydenham Edwards Botanical Register, Ridgeway, London, 1832

Keeler-Cornelius Fre-Wing X182W (msn PW-1). In the mid-1920s George Wilbur Cornelius started a program of experimentation on variable incidence wings, forming the Cornelius Aircraft Co

Variable Weather Outlook
VARIABLE (Changeable)

Bristol Jupiter VI radial with variable valve timing gear

Gadus callarias, Baltic or Variable Cod. Date: 1864

Roots, reeds and flowers of variable flatsedge or smallflower umbrella-sedge, Cyperus difformis L.. Color-printed woodblock engraving by Kan en Iwasaki from Honzo Zufu

Masked mushroom, Agaricus personatus 1, variable mushroom 2 and amethyst clavaria 3.. Masked mushroom, Agaricus personatus 1, variable mushroom, Russula heterophylla 2, and amethyst clavaria

Professor G. T. R. Hill explaining how a variable pitch pr?
Professor G.T.R. Hill explaining how a variable pitch propeller works at a Dr Mann Juvenile Lecture at the Royal Society of Arts, Adelphi, 13 January 1937

Model of a variable geometry BAC Lightning Mk3 in RAF marking in 1964. Date: 1964

Variable pressure scanning electron microscope
This electron microscope allows the imaging of samples without any preparation

Oenanthe picata, variable wheatear
Variable wheatear egg specimens

Sandstones
A collection if sandstones showing colour variations. Clockwise from the left: green Ightham Stone, brown St Bees, beige L Coal Measures from Derbyshire and striped from Stirling

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