This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...very quickly replace cork A by cork C, and take as before the final temperature of the shot. Remove cork C, set the tube on end, and measure the distance from the top of the shot to the position which was occupied by the bottom of cork A. This is the mean height through which the shot has fallen at ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...very quickly replace cork A by cork C, and take as before the final temperature of the shot. Remove cork C, set the tube on end, and measure the distance from the top of the shot to the position which was occupied by the bottom of cork A. This is the mean height through which the shot has fallen at each reversal. The total quantity of work which has been transformed into heat is the weight W of the shot X the height h of fall (expressed in meters) x 70. The number of calories of heat developed is the weight of the shot W X its specific heat (.0315) X the rise in temperature ( 2--tt). Hence, if J" represent the number of gram meters of energy in a calorie, we have j. w x (2-tx) x.0315 = 10 W h.. 70ft (t2-tj).0315' It will be noticed that the weight W of the shot cancels out; hence it need not be taken. In the above directions the attempt is made to eliminate radiation and conduction losses by making the initial temperature of the shot about as far below the temperature of the room as the final temperature is to be above it. This is the usual way of eliminating radiation, when, as in this case, the change in temperature between the readings of the initial and final temperatures takes place rapidly and at a uniform rate. Repeat the experiment several times if time permits. Record the results thus: What conclusions do you draw from your experiment? The chief source of error in the experiment arises from the fact that the thermometer requires considerable time to come to the temperature of the shot. During all this time the shot is gaining or losing heat by conduction and radiation, so that the temperature indicated may not be quite the mean temperature of the shot. This source of error is unavoidable. Why did we attempt to have the...
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Add this copy of A Laboratory Course in Physics to cart. $6.23, good condition, Sold by ThriftBooks-Atlanta rated 5.0 out of 5 stars, ships from Austell, GA, UNITED STATES, published by Ginn and Company.
Add this copy of A Laboratory Course in Physics for Secondary Schools to cart. $54.95, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
