Cutting is the separation of a physical object, or a portion of a physical object, into two or more portions, through the application of an acutely directed force. Implements commonly used for cutting are the knife and saw, or in medicine and science the scalpel and microtome. However, any sufficiently sharp object is capable of cutting if it has a hardness sufficiently larger than the object being cut, and if it is applied with sufficient force. Even liquids can be used to cut things when applied with sufficient force (see water jet cutter).
Cutting is a compressive and shearing phenomenon, and occurs only when the total stress generated by the cutting implement exceeds the ultimate strength of the material of the object being cut. The simplest applicable equation is stress = force/area: The stress generated by a cutting implement is directly proportional to the force with which it is applied, and inversely proportional to the area of contact. Hence, the smaller the area (i.e., the sharper the cutting implement), the less force is needed to cut something.
Other articles related to "cutting":
... Plastic interlayers in laminated glass make its cutting difficult ... There is an unsafe practice of cutting both sides separately, pouring a flammable liquid such as denatured alcohol into the crack, and igniting it to melt the interlayer to separate the ... Special purpose laminated cutting tables Vertically-inclined saw frames A blowlamp or hot air blower ...
... This creates heat that builds up in the cutting zone, which degrades the tool life and locally melts the plastic ... plastic melts, it just flows around the cutting edge instead of being removed by it ... be improved by using high lubricity coolant and keeping the cutting area free of chip build up ...
... saw Axe Blade Bandsaw Chainsaw Circular saw Cutting tool (machining) Diamond blade Diamond tool Drill bit Fingernail File Front teeth Glass cutter Grater Hacksaw Hand saw Hole saw Knife ...
... The CCHA promotes a type of horse called the Canadian cutting horse, which includes all horses used for the sport of cutting in Canada ...
... The Sonning Cutting railway accident occurred during the early hours of 24 December 1841 in the Sonning Cutting through Sonning Hill, near Reading, Berkshire ... to Bristol Temple Meads station entered Sonning Cutting ... Recent heavy rain had saturated the soil in the cutting causing it to slip, covering the line on which the train was travelling ...
Famous quotes containing the word cutting:
“I feel no more like a man now than I did in long skirts, unless it be that enjoying more freedom and cutting off the fetters is to be like a man. I suppose in that respect we are more mannish, for we know that in dress, as in all things else, we have been and are slaves, while man in dress and all things else is free.”
—Amelia Bloomer (18181894)
“Nowadays almost all mans improvements, so called, as the building of houses and the cutting down of the forest and of all large trees, simply deform the landscape, and make it more and more tame and cheap.”
—Henry David Thoreau (18171862)
“should some limb of the devil
Destroy the view by cutting down an ash
That shades the road, or setting up a cottage
Planned in a government office, shorten his life,
Manacle his soul upon the Red Sea bottom.”
—William Butler Yeats (18651939)