Valdez daily prospector., 1913-09-19
LOOKING IVA MIRROR. :.
The Way te. sss Yourself as Others Really See You.

The way to See 'Yourseif as Others
 :. Really See You.
 Did you ever see yourself as oth- CTS see you? You have looked in a mirror, of course, and have seen an image that you took to be an exact duplicate of yourself, and you have supposed that this looked to you ex- actly as you appeared to any one else.
 But is this SO? If you are in clined to persist in believing it, try closing your right eye next time you look in mirror and see which one your reflection closes. Also see if your hair appears to be parted on the side you have always sup posed it to be. Extend your right hand and see if your image does not greet you with the left. But if this fails to convince you, hold a printed page before the glass and see what progress you can make in decipher ing the unfamiliar looking lines of mirror writing' you see in the re- dection.
 As is we'll known, an object and it's reflection in a plane mirror are not facsimiles of each other, but bear the same relation as the right hand to the left; so with single mirror it is impossible to see your self just as the world sees you, for your right side will appear as the left and vice versa. With a double reflection at two mirrors, however, the image is again reversed, and then appears in every way identical with the object. The most con- venient way to accomplish this double reflection is to take two mir TOTS with straight edges and hold them in contact and at right angles to each other. On looking into such double mirror you will sec yourself just as you are.
 Multiple reflections of two or more surfaces have many interest ing applications. With two mirrors facing each other on opposite walls "torchlight procession" is formed by the repeated reflections of sin gle candle or lamp. This is very sensitive test, too, for the parallel ism and planeness of the two mir TOTS, for departure from this con- dition will be detected by curvature or irregularity of the line of lights. They should otherwise form straight line which would finally fade away in the distance because of the loss of light from repeated reflection.
 The reversal of the image by re- hcction is made excellent use of in the modern type of fieldglass, the prism binocular, which has come into such deserved popularity. The prisms here serve only as refecting surfaces which cause the beam of light to traverse its path three times and hence make the equiva lent length of the telescope three times as great as it actually is. But this is only part of their service' The simplest form of telescope, con- sisting only of an objective and an eyepiece of d single convex lens, gives an inverted image, or, in other words, shows objects upside down. 1 To rcinvert or erect the image sev- cral additional lenses arc used, and this adds to the necessary length of the telescope as well as to its cost, besides introducing other disadvan- tagcs. In the prism binocular this reinversion is brought about by the reflection at the two prisms, one of which is so turned as to exchange right for left in the image. and the other top for bottom, and the com bincd effect is to show things in their proper rclations.-.. l. Rose