File:Laboratory exercises to accompany Carhart and Chute's First principles of physics (1913) (14779481862).jpg

Identifier: laboratoryexerci00full (find matches)
Title: Laboratory exercises to accompany Carhart and Chute's First principles of physics
Year: 1913 (1910s)
Authors: Fuller, Robert W. (Robert Warren), 1871-1953 Brownlee, Raymond B. (Raymond Bedell), b. 1877 joint author Carhart, Henry Smith, 1844- First principles of physics. (from old catalog)
Subjects: Physics
Publisher: Boston, Allyn and Bacon
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:
he relation between the directionof the light before and after it strikes the mirror is statedin the law of reflection. We can locate a particular re-flected ray by sighting along a ruler at the image of theobject that is reflected. A line drawn along the edge ofthe ruler will mark the direction of the reflected ray. Experimental: (1) Draw a line across the middle of the right-handpage of your note-book. Mark it MM. Place the mirrorperpendicular to the page with its reflecting surface onthis line. Stick a pin upright in the page in front of themirror and mark its position P. (2) Placing the head on the level of the page andopposite one of the lower corners of the book, sight alonga ruler placed on the page at the image of the pin, as seenin the mirror. When the edge of the ruler is exactly in 140 LABORATORY EXERCISES a line with the image of the pin, draw a line along theedge of the ruler. (3) Repeat the operations described in (2), with theeye near the other lower corner of the book.
Text Appearing After Image:
Fig. 54. (4) Remove the mirror and substitute a transparentsheet of glass, carefully placing its front edge on the lineMM. Protect the page behind the mirror from the directlight of the windows. Looking through this transparentmirror, insert a pin to coincide with the image of P.Mark the position of this pin Pr. Remove the mirrorand pins. (5) Continue each of the lines drawn along the edge ofthe ruler as solid lines to the mirror line MM, and con-tinue them as dotted lines behind the mirror until theymeet. Do these solid lines represent incident or reflectedrays ? From P draw a line to the intersection of each of thelines just drawn with the mirror line. Do these lines from LAW OF REFLECTION OF LIGHT 141 P mark incident or reflected rays ? Connect P and P!with a line, solid from P to the mirror and dotted fromthe mirror to P. Mark the direction in which light ispassing along each of the solid lines by an arrow on that line. (6) At the intersection of one of the solid lines withthe mir

Note About Images