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An air compressor is used to compress filtered air to high pressure; the high-pressure gas is cooled back to ambient temperature, and allowed to expand to a low pressure. The expanding air cools greatly (the Joule–Thomson effect), and oxygen, nitrogen, and argon are separated by further stages of expansion and distillation. Small-scale ...
Liquid oxygen has a clear cyan color and is strongly paramagnetic: it can be suspended between the poles of a powerful horseshoe magnet. [2] Liquid oxygen has a density of 1.141 kg/L (1.141 g/ml), slightly denser than liquid water, and is cryogenic with a freezing point of 54.36 K (−218.79 °C; −361.82 °F) and a boiling point of 90.19 K (−182.96 °C; −297.33 °F) at 1 bar (15 psi).
Old elephants near death do not leave their herd to go to an "elephants' graveyard" to die. [29] The color of a red cape does not enrage a bull. Bulls are not enraged by the color red, used in capes by professional bullfighters. Cattle are dichromats, so red does not stand out as a bright color. It is not the color of the cape, but the ...
Hot shrinking [1] is a process in car bodyworks. [2] As the name suggests, heat will be involved, while "shrinking" is the process of straightening a metal section. This is a method of panel beating where a panel is first heated to make it softer. In most cases, heating will be done by use of the oxyacetylene flame.
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Both the material and the abbreviation are obsolete, or nearly so. Spell out the words if this material is to be mentioned at all in modern drawings. W/I, w/i: within: A little-used abbreviation. Better to spell out for clarity. W/O, w/o: without: Better to spell out for clarity.
Overall, you can lose between 1 to 3 inches in height as you age, per Medline Plus. While age-related height loss is normal, there are times when it's a sign of an underlying health condition.
During a bone scan, you get a metric called a T-score, and that measures how dense your bones are. My spine T-score was -4.4, but I had no idea what that meant.