::  Home  

Archive September 2006

  • Optical Illusion: Illusion Box
    The accompanying engravings show a most interesting form of electrically operated illusion consisting of a box divided diagonally and each division [...]
    - September 19, 2006
  • Raising Water
    Place a small piece of paper, lighted, in an ordinary water glass. While the paper is burning turn the glass [...]
    - September 17, 2006
  • Home-Made Micrometer
    It often becomes necessary to find the thickness of material so thin, or inconvenient to measure, that a rule or other [...]
    - September 15, 2006
  • Optical Illusion: Inclined Letters
    When looking at the accompanying sketch you will say that the letters are alternately inclined to the right and left. [...]
    - September 12, 2006
  • Paper Bag Carrying Handle
    In tying the ordinary paper bag, the string can be placed in the paper in such a way that it [...]
    - September 10, 2006
  • Optical Illusion: Broken Ring?
    The engraving shows a perfectly straight boxwood rule laid over a number of turned brass rings of various sizes. Although the [...]
    - September 9, 2006
  • Spoon Holder on a Kettle
    In making marmalade and jellies the ingredients must be stirred from time to time as the cooking proceeds. After stirring, some [...]
    - September 8, 2006
  • Optical Illusion: Three Circular Figures
    By giving the page a revolving or rinsing motion the three circular figures printed on the next page appear to rotate. [...]
    - September 7, 2006
  • How to Make a Hygrometer
    Mount a wire on a board which is used for a base and should be 3/8 by 4 by 8 [...]
    - September 7, 2006
  • Inserting Adsense Code on Wordpress Posting Editor
    I found many website embed the google adsense ads into their article (post area). I try to figur out [...]
    - September 7, 2006
  • Homemade Telegraph Key
    A simple and easily constructed telegraph key may be made in the following manner: Procure a piece of sheet brass, about [...]
    - September 5, 2006