A Laboratory Manual of Physics

A Laboratory Manual of Physics

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ...and the short arm of the pointer on the other end. That portion of the pointer near the scale should be near the top of it: this may be accomplished by using the screw at the right hand end. Measure the short arm of the pointer from the steel point A to the fulcrum B of the lever, and the long arm of the pointer from left hand edge C of the scale to the fulcrum. Take readings of the thermometer and of the pointer on the scale. (To do this accurately sight with the eye so that the pointer covers its image in the mirror.) Then being very careful not to disturb the apparatus, connect the jacket with the boiler so as to pass steam through the jacket. Do this until the thermometer has been stationary for several minutes and take readings of the thermometer and of the pointer. Calculate the distance the pointer has moved, and from this, and the ratio of the arms of the lever, calculate the total expansion of the rod. Then calculate the expansion of the rod per degree change of temperature, and finally, the number of centimeters that one centimeter of the rod increased in length per change of temperature of 1 C. This last number is called the coefficient of linear expansion. Observations Length of brass rod Length of long arm of lever.. Length of short arm of lever.. Reading of pointer before heating Temperature before heating.. Reading of pointer after heating Temperature after heating.. Total expansion of rod.... Expansion per degree.... Expansion per centimeter per 1 Conclusions.--Show how you know that the rod expanded. Explain how you determined just how much it expanded, stating clearly the relation between the distance, the end of the rod moved in expanding, and the distance the point C of the lever moved. Explain how, from the total expansion, ..show more

Product details

  • Paperback | 28 pages
  • 189 x 246 x 2mm | 68g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236531949
  • 9781236531940