The Mechanical Theory of Heat

The Mechanical Theory of Heat

By (author) 

List price: US$18.51

Currently unavailable

We can notify you when this item is back in stock

Add to wishlist

AbeBooks may have this title (opens in new window).

Try AbeBooks


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. 1879 edition. Excerpt: ...body, some of which may be reversible, others non-reversible, it is in many cases interesting to know how much any particular one of the latter has contributed towards making up the whole sum of uncompensated transformations. For this purpose we may suppose that after the change of condition which we wish to enquire into, the variable body is brought by any reversible process into its former condition. By this means we form a smaller cyclical process, in which equation (1) may be applied just as well as in the whole process. Thus if we know the quantities of heat which the body has taken in during this process, and the temperatures which appertain to them, the negative integral--I--gives the uncompensated transformations which have taken place. But as.the return to the original condition, which has taken place in a reversible manner, can have contributed nothing to increase this sum, the expression above gives the uncompensated transformation which was sought, and which was caused by the given change in condition. If we examine in this way all the parts of the whole process which are non-reversible, and thereby find the values of Nlt Nt etc., which must all be individually positive, then the sum of these gives the magnitude N relating to the whole cyclical process, without requiring us to bring under review those parts of it which are known to be reversible. 3. Expansion of a Gas unaccompanied by External Work. It may be worth while to examine more closely those changes of condition, mentioned in '1, which take place in a non-reversible manner because the re'sistances to be overcome are less than the forces at work; our object being to determine the amount of heat taken in during the process. As however there are a great number more

Product details

  • Paperback | 116 pages
  • 190.5 x 246.38 x 10.16mm | 158.76g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236615689
  • 9781236615688