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. 1919 Excerpt: ...until a temperature of 4 C. is reached, when it begins to expand. Ice occupies more space than did the water from which it was made. To this fact is due the bursting of water-pipes when frozen. Measurement of Heat.--In order to accurately measure heat the thermometer has been devised. Its bulb contains some fluid which ...
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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. 1919 Excerpt: ...until a temperature of 4 C. is reached, when it begins to expand. Ice occupies more space than did the water from which it was made. To this fact is due the bursting of water-pipes when frozen. Measurement of Heat.--In order to accurately measure heat the thermometer has been devised. Its bulb contains some fluid which is especially sensitive to heat and readily expands when warmed. The tube provides an outlet for the expanding fluid. The scale records the amount of expansion or contraction. Mercury is used in thermometers because it is sensitive to heat, easy to see, etc. Colored alcohol is also used, especially in thermometers for use in very cold regions where mercury would freeze. (Mercury freezes at 40 F. below zero.) If a thermometer bulb is placed in contact with anything hotter than is provided for by the length of its tube, the force of the expansion of the mercury will burst the tube. (We all know the unfortunate probationer who washes a thermometer in hot water.) If a thermometer bulb is placed in contact with anything colder than the tube provides for, the mercury goes into the bulb and we cannot register it. The clinical thermometer is provided with a contraction in the tube at a point below the scale. This interferes with the free return of the mercury when cooling takes place, and so keeps in place what has run up the tube until it is shaken down, i. e., urged back into the bulb or toward it. A thermometer must be very accurately made, scaled, and tested to be of value. There are two sorts of thermometers in use, those having the Fahrenheit and those the Centigrade scale.1 In the Fahrenheit scale, 32 is the freezing-point of water and 212 its boiling-point. In the Centigrade scale (Centigrade means "one hundred steps") zero is the f...
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Add this copy of Practical Physics for Nurses to cart. $16.27, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Practical Physics for Nurses to cart. $27.44, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
