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  2. Photo 51 - Wikipedia

    en.wikipedia.org/wiki/Photo_51

    Photo 51 is an X-ray based fiber diffraction image of a paracrystalline gel composed of DNA fiber [1] taken by Raymond Gosling, [2] [3] a postgraduate student working under the supervision of Maurice Wilkins and Rosalind Franklin at King's College London, while working in Sir John Randall's group.

  3. French standard sizes for oil paintings - Wikipedia

    en.wikipedia.org/wiki/French_Standard_Sizes_for...

    French standard sizes for oil paintings refers to a series of different sized canvases for use by artists. The sizes were fixed in the 19th century. The sizes were fixed in the 19th century. Most artists [ weasel words ] —not only French—used this standard, as it was supported by the main suppliers of artist materials .

  4. File:Photo 51 x-ray diffraction image.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Photo_51_x-ray...

    File information Description X-ray diffraction image of the double helix structure of the DNA molecule, taken 1952 by Raymond Gosling, commonly referred to as "Photo 51", during his work with Rosalind Franklin on the structure of DNA

  5. Canvas - Wikipedia

    en.wikipedia.org/wiki/Canvas

    In the United States, canvas is classified in two ways: by weight (ounces per square yard) and by a graded number system. The numbers run in reverse of the weight so a number 10 canvas is lighter than number 4. The word "canvas" is derived from the 13th century Anglo-French canevaz and the Old French canevas.

  6. Photograph 51 - Wikipedia

    en.wikipedia.org/wiki/Photograph_51

    Photograph 51 can refer to: Photograph 51 (play) , by Anna Ziegler Photo 51 , an X-ray image of a strand of DNA taken in 1952 that was critical in determining the structure of DNA

  7. Picture frame - Wikipedia

    en.wikipedia.org/wiki/Picture_frame

    View of a frame-maker's workshop, oil on canvas, circa 1900 The elaborate decoration on this frame may be made by adhering molded plaster pieces to the wood base.. A picture frame is a container that borders the perimeter of a picture, and is used for the protection, display, and visual appreciation of objects and imagery such as photographs, canvas paintings, drawings and prints, posters ...

  8. Canvas print - Wikipedia

    en.wikipedia.org/wiki/Canvas_print

    The canvas print material is generally cotton or plastic based poly canvas, often used for the reproduction of photographic images. Digital printers capable of producing canvas prints range from small consumer printers owned by the artist or photographer themselves up to large format printing service printers capable of printing onto canvas ...

  9. List of abbreviations in photography - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    A computer file format for coloured images, restricted to 256 colours and useful for small file-size. [8] GN: Guide number. A value indicating the power of an electronic flash apparatus, and used to estimate exposure. GN = distance × f-number. One needs to specify the film or sensor ISO speed, and it is conventional to quote for ISO 100/21°.