Wikipedia talk:Articles for deletion/Variable length flexible stylus

Rewwritten to account for WP:GNG, WP:OR and WP:COI

WP:GNG Significant coverage means that sources address the subject directly in detail, so no original research is needed to extract the content. Significant coverage is more than a trivial mention but it need not be the main topic of the source material. Refer to silverpoint characteristics. The stylus is a subject that is directly addressed in detail of the main topic of silverpoint.

ORPHAN links to silverpoint, silverpoint links to VLFS.

WP:OR and WP:COI have been addressed.

Silverpoint has been edited shifting VLFS to characteristics.

Variable length flexible stylus (VLFS)
Small text A geometrical drawing instrument. A variety of instrument used in making a silverpoint drawing. Differing from a rigid stylus3,6 whose tip is honed to varying degrees of sharpness3, the VLFS is used to measure and emulate a grayscale value1 such as the photographic Zone System developed by Ansel Adams and Fred R. Archer, where subtle variations in subject shading4 are controlled by the length of a flexible silver wire7 protruding from its holder. The formula, Vn ƒ LF, based on the laws of potential energy teaches that the Value number is a Function of the Length of a Flexible stylus as it protrudes from its holder. Potential energy at the tip of the stylus decreases as the length of the flexible stylus increases resulting in a lighter value on the drawing surface. Potential energy at the tip of the stylus increases as the length of the flexible stylus decreases resulting in a darker value on the drawing surface. Setting the VLFS to an intermediate length produces values in relation to its length according to an associated shading guide that quantifies the values.

Refrences
1-Adams, Ansel, “The Negative”, Book 2, Little Brown and Company, Boston, 1984, The Zone System, page 49-97. 2-Ames-Lewis, Francis "Drawing In The Italian Renaisssance Workshop", Victoria and Albert Museum, London, 1983,pages 44–45 3-Cennini, Cennino d’Andrea, “The Craftsman’s Handbook” Translated by Thompson ,Jr. Daniel,Dover Publications, Inc., New York, page 5. 4-Kemp, Martin, “Leonardo on Painting”, Translation, Yale University Press, 1989, “There are two principal parts into which painting is divided: firstly the outline which surround the shapes of solid bodies – and these outlines require draughtsmanship;  and secondly what is called shading.” 6-Watros, James, "The Craft of Old-Master Drawing", University of Wisconsin Press, Metalpoint Tools, page 3-33. 7-Heydenreich, Ludig H., "Leonardo the Inventor",ISBN 0091426618, 1981, diagram of a device mechanizing a technique for forming wire., page 86.

Mitchsdiamond (talk) 13:50, 2 February 2012 (UTC)