Appletons School Physics Embracing the Results of the Most Recent Researches
Appletons School Physics Embracing the Results of the Most Recent Researches
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In our eReader you can find the full English version of the book. Read Appletons School Physics Embracing the Results of the Most Recent Researches Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Appletons School Physics Embracing the Results of the Most Recent Researches
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If the piston and valves work air-tight, we may start with the pump empty i. E. , containing nothing but air down to the level of W. Then, on raising and lower- ing the piston, this air will be pumped out and the water will follow it up into the pump that is, the pump will act as an air-pump until all the air is removed, and then it will be full of water and act as a water-pump. If the piston and valve do not work air-tight, some water is poured into the top of the pump. This serves temporarily... to seal up the valves and piston so that they will not leak air, as water leaks through small crevices more slowly than air. The pump then works as an air-pump until the water fills it. If the pump leaks through the lower valve or at any point of the pipe below it, air will be drawn in and the water will run out when the pump is not in use. The pump is then said to be " run down. " To prevent freezing, the water is often let out purposely by opening both valves or otherwise admitting air. The lower valve is usually provided with a point projecting upward and backward, so that when the piston is forced as far down as possible it presses upon this point in such a way as to hold both valves open.
What to read after Appletons School Physics Embracing the Results of the Most Recent Researches?
You can find similar books in the "Read Also" column, or choose other free books by John D John Duncan Quackenbos to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If the piston and valves work air-tight, we may start with the pump empty i. E. , containing nothing but air down to the level of W. Then, on raising and lower- ing the piston, this air will be pumped out and the water will follow it up into the pump that is, the pump will act as an air-pump until all the air is removed, and then it will be full of water and act as a water-pump. If the piston and valve do not work air-tight, some water is poured into the top of the pump. This serves temporarily... to seal up the valves and piston so that they will not leak air, as water leaks through small crevices more slowly than air. The pump then works as an air-pump until the water fills it. If the pump leaks through the lower valve or at any point of the pipe below it, air will be drawn in and the water will run out when the pump is not in use. The pump is then said to be " run down. " To prevent freezing, the water is often let out purposely by opening both valves or otherwise admitting air. The lower valve is usually provided with a point projecting upward and backward, so that when the piston is forced as far down as possible it presses upon this point in such a way as to hold both valves open.
What to read after Appletons School Physics Embracing the Results of the Most Recent Researches?
You can find similar books in the "Read Also" column, or choose other free books by John D John Duncan Quackenbos to read onlineMoreLess
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