Compact (cortical) bone specimens have been found to have tensile strength in the range of 700 1,400 kg per square cm (10,000 20,000 pounds per square inch) and compressive strengths in the range of 1,400 2,100 kg per square cm (20,000 30,000 pounds per square inch).
Polyester film at a tensile strength of 1,400 kg per square cm (20,000 pounds per square inch)—compared with polyethylene at a tensile strength of about 40 kg per square cm (600 pounds per square inch)—finally made it possible to produce superpressure balloons, which do not expand or contract as the enclosed gas heats up or cools down.
Millibar, unit of air pressure in the metric system, commonly used in meteorology, equal to 100 pascals, 1,000 dynes per square cm (about 0.0145 pounds per square inch), or slightly less than one-thousandth of a standard atmosphere.
Formations having fluid pressures greater than 1,400 kg per square cm (20,000 pounds per square inch) and temperatures greater than 250 °C (480 °F) have been successfully penetrated.
It comprised a large water-filled cylinder with a piston that could raise water pressure within the cylinder and in supply pipes to 600 pounds per square inch (42 kg per square cm).
The Bourdon-tube gauge, invented about 1850, is still one of the most widely used instruments for measuring the pressure of liquids and gases of all kinds, including steam, water, and air up to pressures of 100,000 pounds per square inch (70,000 newtons per square cm).
For dust, analytical methods varied (we used only data analyzed using inductively coupled plasma mass spectrometry, the most accurate currently available) and results were often presented as volume per square centimeter cm, rather than in micrograms per gram μg/g, and so we were not able to include these in our estimates.
We measured infection efficiency as the number of pustules per square centimeter of leaf tissue, and accounted for the variation in inoculum dose (spores deposited per cm) using a split-plot ANCOVA model.
The results were expressed as the mean of two plates in colony-forming units per square centimeter (CFU/cm).
GHz: Gigahertz; μW/cm: Microwatts per square centimeter; HHQ: Health History Questionnaire SMRR: Standardized mortality ratio; CI: Confidence interval; SMbR: Standardized morbidity ratio; Obs: Observed; Exp: Expected.
Data are represented as a matrix of signal intensities where the x-axis indicates the inverse ion mobility in volt second per square centimetre (Vs/cm) and the y-axis indicates the retention time in seconds in a topographic plot (Figs. 1 and 4).
