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A quire of paper is a measure of paper quantity. The usual meaning is 25 sheets of the same size and quality: 1 ⁄ 20 of a ream of 500 sheets. Quires of 25 sheets are often used for machine-made paper, while quires of 24 sheets are often used for handmade or specialised paper of 480-sheet reams.
Wrapping tissue is a translucent, thin tissue paper used for wrapping and cushioning items. Wrapping tissue is usually found in single sheets or sheet collections of 25, 40, or 50. White tissue is also sold specifically for bulk wrapping in reams of 480 sheets.
They show an almost linear increase in lift coefficient with increasing angle of attack with a gradient known as the lift slope. For a thin airfoil of any shape the lift slope is π 2 /90 ≃ 0.11 per degree. At higher angles a maximum point is reached, after which the lift coefficient reduces.
A spring scale, spring balance or newton meter is a type of mechanical force gauge or weighing scale. It consists of a spring fixed at one end with a hook to attach an object at the other. [ 1 ] It works in accordance with Hooke's Law , which states that the force needed to extend or compress a spring by some distance scales linearly with ...
The 1902 Wright Glider shows its lift by pulling up. When a fluid flows around an object, the fluid exerts a force on the object. Lift is the component of this force that is perpendicular to the oncoming flow direction. [1]
Springs also bought the Chester and Cheraw Railroad, renaming it the Lancaster and Chester Railroad, or L&C. [5] Lancaster had the largest print cloth factory in the world in 1939. [4] In 1948, Springs opened the Grace Plant on the Catawba River near Lancaster at the site of a former locomotive shop. The company made consumer products for the ...