Example tags/facts

Polarising helioscopic eyepiece.

Optical instrument, polarising helioscopic eyepiece, brass / glass, used at Sydney Observatory, made by Hugo Schroeder, Hamburg, Germany, 1874. A polarising helioscopic eyepiece consisting of a central brass disc with a hole in its surface. Set into the surface of the disc surrounding the hole is a rotatable brass scale. Fixed to the rotating scale is a rectangular metal structure set at an oblique angle. Inside the metal structure there is a rectangular glass lens which is held at an angle by two metal brackets. There is an additional pair of brackets for another lens however no lens is present. There is a hole in the top of the oblique metal structure into which a brass screw fitting has been attached. On the underside of the central brass disc is a metal bracket containing two additional rectangular glass lenses. The lenses are set at an angle and held in place by metal brackets.

View object on the British Library on Flickr Commons site (opens in new window).

(Accession num: H10380)

So far people have added content in 4 turns about this object.

Tags

helioscope, eye, polar, polarising, Hugo Schroeder, telescope, eyepiece, polarising, surface of the sun, reflectors, Venus, H.C. Russell, optical unconscious, lens, golden color, circle, scope, metal

You can also view a list of objects with added facts (not just tags).

  • Your score for this game:

    • No points for this game yet. Start playing to earn points
    Login or register to save your points
  • Objects you've played in this game

    ?????
    So far players like you have improved 977 records for 3 museums and libraries through games on this site.
  • Top registered players (all games)

    • Han (5620 points)
    • Josie (5000 points)
    • lrnc (4400 points)
    • mia (4005 points)
    • Hepburn (2190 points)
    • ad (1785 points)
    • archiwicz (1225 points)
    • miathepink (1115 points)
    • JoK (890 points)
    • jennifuchs (870 points)
  • Register or login to save your points

  • Help the British Library tag a million images

    Some of the million images the British Library have released on Flickr Commons have been added here for you to play with. The tags you add will help people find these historic images.

    They have asked people to use these special tags where appropriate: 'map', 'letter'+theletter e.g. LetterA, 'architecture', 'decoration', 'landscape', 'music', 'portrait', 'fashion'. If the image needs rotating, add 'rotatec' or 'rotatecounterc'.

    More information on British Library tagging guidelines

  • Coming soon – top recent players

    I want to celebrate people who've just started playing so I'll add a widget to show off the latest contributions.