wind-pressures

An improved instrument was added that recorded temperatures on a self-registering roll, all fluctuations, and the highest and lowest temperatures, wind-pressures, all variations in humidity, temperature, and air pressure as well as the directions and the velocity of the wind for periods of seventy days and more.

George Wharton James - The Lake of the Sky: Lake Tahoe in the High Sierras of California and Nevada, its History, Indians, Discovery by Frémont, Legendary Lore, Various Namings, Physical Characteristics, Glacial Phenomena, Geology, Single Outlet, Automobile Routes, Historic Towns, Early Mining Excitements, Steamer Ride, Mineral Springs, Mountain and Lake Resorts, Trail and Camping Out Trips, Summer Residences, Fishing, Hunting, Flowers, Birds, Animals, Trees, and Chaparral, with a Full Account of the Tahoe National Forest, the Public Use of the Water of Lake Tahoe and Much Other Interesting Matter

The standard measurements of wind-pressures is the force produced by a current of air of one mile per hour velocity striking square against a plane of one square foot area. The practical difficulties of obtaining an exact measurement of this force have been great. The measurements by different recognized authorities vary 50 per cent.

Orville Wright - The Early History of the Airplane

I did not see what went on elsewhere, though I felt the sudden surge and heel of the schooner as the wind-pressures changed to the jibing of the fore- and main-sails. My hands were full with the flying-jib, jib, and staysail; and by the time this part of my task was accomplished the Ghost was leaping into the south-west, the wind on her quarter and all her sheets to starboard.

Jack London - The Sea Wolf