Laboratory exercises in physics for secondary schools (1906)
Twiss, George Ransom, b. 1863 · Chicago, Scott, Foresman and company · leaf 42
thereading will appear to be greater or less than itreally is. This kind of error is called parallax andit may be almost entirely avoided by placing a smallmirror behind the marker, and keeping the eye insuch a position that the marker hides its reflectedimage, (b) A mass sufficient to elongate the… … Fig. 4. MECHANICS OF SOLIDS 21 1 gm.-wt. = 980 dynes). The new scale reading isrecorded opposite the pull that produced it. (c)The process of increasing the pulls, and of observ-ing the corresponding readings is continued untilten or more sets of readings have been taken, thepulls and scale…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-218-128.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-230-100.webp)
