Identifier: handymansworksh00bond (find matches)
Title: Handy man's workshop and laboratory
Year: 1910 (1910s)
Authors: Bond, A. Russell (Alexander Russell), 1876-
Subjects: Handicraft Workshop recipes
Publisher: New York, Munn & co., inc.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
in such experiments the conductor remains at rest,its cut spaces illumined by the electric discharge, the value of theresult as a spectacle depending upon the necessarily limited dispo-sition that can be made of the luminous conductor; but by arrang-ing the latter to be kept in rapid motion, so as to call into playthe phenomenon of persistence of vision, this form of experimentbecomes at once susceptible of some exceedingly fine adaptations. To those having at hand a good static machine the illuminationof such objects as wine glasses, vases, lamp chimneys or anysymmetrical glass objects of this sort, becomes easy, and consti- HANDY MANS WORKSHOP AND LABORATORY 239 tutes one of the most beautiful of all the varied line of possiblevisual effects. Fig. 200 suggests the method of arranging sucharticles for illumination. In the example illustrated a large gobletof thin glass is held by three small screws upon a revolving plat-form having upon its under side a small grooved pulley which is
Text Appearing After Image:
Fig. 200—Goblet mounted for illumination belted for moderately rapid rotation to a suitable hand wheel. Asingle narrow strip of tinfoil, 1/16 of an inch wide, is cementedover the glass with thick shellac varnish as follows: Starting underthe goblet at the spindle of the whirling table, with which it makescontact, the strip proceeds to the edge of the foot of the glass,which it follows for perhaps an inch; thence in a curved line 240 HANDY MAN S WORKSHOP AND LABORATORY across the base to the stem, which it ascends in a straight path;then, over the bowl of the goblet in a somewhat sinuous courseto the upper rim, after following which for about one-third itscircumference it descends upon the inside, and terminates in thecenter at the bottom. All that portion of the tinfoil on the out-side and along the upper rim is divided every eighth of an inch with a knife point, thoseparts within and under thegoblet being left intact. Thedivisions should be carefullygone over and examined tosee tha

Note About Images