A sweet spot is a place, often numerical as opposed to physical, where a combination of factors suggest a particularly suitable solution. When used in the context of a racquet, bat or similar sporting instrument, sweet spot is often believed to be the same as Center of percussion.

Origin

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The term originally referred to various pieces of sporting equipment, notably baseball bats and tennis racquets. When hitting the ball, the bat (for instance) will rebound, but there is a location along the bat where this force is completely balanced out by turning force of the bat. If you hit the ball closer to the end of the bat, the grip of the bat will try to rotate forward out of your hands, whereas if you hit it closer to the handle, the bat's tip will try to rotate forward. There is a small "sweet spot" where these two tendencies cancel out.

Non-sporting use

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The term is now generally used in other fields. For instance, consider bridge-building. Long spans, notably over deep gorges, can be served only by a suspension bridge, while shorter spans can use arch bridges or cantilever solutions. In the middle is a sort of grey area, where the materials needed to construct an arch (for instance) would be about equal to the expense of the cabling needed for a suspension design. This is the "sweet spot" for the cable-stayed bridge that reduces the cabling and the materials.

Paintball

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The sweet spot in paintball is a term used when firing most markers (guns) with electrically controlled triggers, where when held just right, the recoil of the marker will be enough so that as the marker rebounds off the back of the firer's palm, it will trip the trigger again, often many times in fairly quick repetition. This is known as "sweet spotting it".

Electronics

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The term refers to any location in which the reception of a signal is better than usual. This can refer to wireless computer network signals or conventional radio transmissions.

Terms | Paintball | Engineering | Sweet spot