Word: contains
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Dates: during 1940-1949
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...flight instruments which Sperry produces contain small, rapidly spinning flywheels called gyroscopes. Their useful characteristic is the obstinate way they keep steady while the airplane twists and turns around them. Most valuable service: they provide an artificial horizon; when a pilot cannot see the real horizon, he looks at the gyroscopic one, to see if he is on an even keel...
...troughlike basins (they slope gently, are graduated in three broad steps) floods chemically charged water, two or three times a day. In hydroponic farming the irrigating water is loaded with soluble salts of every specific chemical needed, and thus may be superior to any natural soil, for few soils contain all the essentials for vigorous plant growth...
...solve these problems, the structure envisioned by the Council would be administered by the heads of the legitimate organizations and would contain offices equipped with typewriters, telephones, and mimeograph machines. The central feature of the building--a theatre seating approximately 1000--could be used for films, plays, forums and similar functions. Music and dramatics, long relegated to musty, out-of-the-way auditoriums, would at last be heard and viewed at best advantage. Stress must be laid upon the fact that the building would serve graduate students as well as undergraduates; the Law School Forum and many organizations such...
What happens is that the baby's red blood cells which contain the Rh factor become mixed in some unknown way with the Rh negative blood of the mother. Result: to combat the invading cells, her tissues produce destructive antibodies. These then diffuse back into the unborn child's blood stream, attacking the blood cells, causing the disease...
After an eruption has released the pressure, the top layer of the molten rock cools and hardens, sealing the volcano temporarily. The cap can contain the pressure for a time-depending on the peculiarities of the individual volcano-when it cracks open again with a rush of burning gas. Molten magma boils up, whipped to a froth by the gases. After the pressure has been relieved, the eruption subsides, the cap forms again and the cycle of eruption is complete...