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What were the Three Fs?
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"Free Encyclopedia" does not mean "zero price encyclopedia" In practice, any person who has access to the World Wide Web may read the content of Wikipedia on the website wikipedia.org without paying any money. This, however, does not mean that Wikipedia content is fully non-commercial. Copies of Wikipedia content can be sold.
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f-number. Diagram of decreasing apertures, that is, increasing f-numbers, in one-stop increments; each aperture has half the light-gathering area of the previous one. An f-number is a measure of the light-gathering ability of an optical system such as a camera lens. It is calculated by dividing the system's focal length by the diameter of the ...
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Free sale, fixity of tenure, and fair rent. Free sale, fixity of tenure, and fair rent, also known as the Three Fs, were a set of demands first issued by the Tenant Right League in their campaign for land reform in Ireland from the 1850s. They were, Free sale—meaning a tenant could sell the interest in his holding to an incoming tenant ...
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