fundamental pumping
61Grand Canal (China) — Grand Canal of China in Suzhou The Grand Canal (simplified Chinese: 大运河; traditional Chinese: 大運河; pinyin: Dà Yùnhé) in China, also known as the Beijing Hangzhou Grand Canal (simplified Chinese …
62Watt steam engine — The Watt steam engine was the first type of steam engine to make use of steam at a pressure just above atmospheric to drive the piston helped by a partial vacuum. Improving on the design of the 1712 Newcomen engine, the Watt steam engine,… …
63Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …
64Groundwater — Shipot, a common source of drinking water in a Ukrainian village. Groundwater is water located beneath the ground surface in soil pore spaces and in the fractures of rock formations. A unit of rock or an unconsolidated deposit is called an… …
65Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …
66Antelope Valley — For other uses, see Antelope Valley (disambiguation). Canada geese take flight over wildflowers near Lancaster, California, 2011 …
67Membrane potential — Differences in concentration of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Many ions have a concentration gradient across the membrane, including potassium (K+), which is at a high inside and a… …
68Steam power during the Industrial Revolution — See also the section on steam power in the main Industrial Revolution article During the Industrial Revolution, steam power replaced water power and muscle power (which often came from horses) as the primary source of power in use in industry.… …
69Chronology of world oil market events (1970-2005) — Basic OverviewThe 1970s See: 1970 1979 world oil market chronology 1970*January 1: U.S. Federal oil depletion allowance reduced from 27.5 to 22.0 percent. *May 3: TAP line from Saudi Arabia to the Mediterranean interrupted in Syria, creating all… …
70Water politics — Water politics, sometimes called hydropolitics, is politics affected by water and water resources.The first use of the term, hydropolitics, came in the book by John Waterbury, entitled Hydropolitics of the Nile Valley, Syracuse University Press,… …
