Famous rules of thumb
A rule of thumb is a principle with broad application that is not intended to be strictly accurate or reliable for every situation. It is an easily learned and easily applied procedure for approximately calculating or recalling some value, or for making some determination. [from Wikipedia]
ema555 (Feb. 12, 2009 [2:35])
tags: Rules of thumb,
Culture,
Rules of thumb,
Advices
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- Gall's law
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- Lead room
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In photography, filmography and other visual arts, lead room, or sometimes nose room, is the space in front, and in the direction, of moving or stationary subjects. Well-composed shots leave space in the direction the subject is moving.
- Five-second rule
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- Two-second rule
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- Rule of thirds
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The rule of thirds is a compositional rule of thumb in visual arts such as painting, photography and design. The rule states that an image should be imagined as divided into nine equal parts by two equally-spaced horizontal lines and two equally-spaced vertical lines, and that important compositional elements should be placed along these lines or their intersections.
- Rule of 72
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In finance, the rule of 72, the rule of 70 and the rule of 69 are methods for estimating an investment's doubling time. The number in the title is divided by the interest percentage per period to obtain the approximate number of periods (usually years) required for doubling.
- Sunny 16 rule
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In photography, the sunny 16 rule (or, less often, the "sunny f/16 rule") is a method to estimate correct daylight exposures without using a light meter.
- Pareto principle
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The Pareto principle (also known as the 80-20 rule, the law of the vital few and the principle of factor sparsity) states that, for many events, roughly 80% of the effects come from 20% of the causes.
- Octet rule
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