Newton's formula

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Newton's formula

An expression relating the focal lengths of an optical system (f and f′) and the object x and image x′ distances measured from the respective focal points. Thus,

ff′ = xx′

If the optical system is a lens in air −f = f′ and the formula becomes

−f² = xx′

Syn. Newton's equation; Newton's relation. See fundamental paraxial equation; sign convention; gaussian theory.

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sign symptom theory			It's about as scientific as reading monkey bones, but some minds don't buy Newton's formula wholesale. STICKBOW by FADALA, SAM / Petersen's Bowhunting In particular, the unified field theories say that the force of attraction between two bodies is given by Newton's formula plus a much smaller "fifth force" that seems to come into play at distances of about 100 to 1,000 meters. Geophysics on the fifth force's trail by Weisburd, Stefi / Science News			New Zealand Mouse Newberry knife newborn newborn adaptation newborn animals newborn care newborn infant newborn intrapartal care newborn jaundice newborn monitoring newborn screening Newbury virus Newcastle disease Newcastle Disease virus Newfoundland Newman Newman's stain Newmarket news embargo news release newsgroup newspaper sign newsprint newt newton Newton's formula newton-meter newtonian constant of gravitation Nexacryl Nexavar nexin Nexium next-of-kin nexus Nezelof type of thymic alymphoplasia Nezelof's syndrome NF NF1 NF2 NFE NFLPN ng NG tube ngaio tree ngaione NGF NGL NGU NH3 NHANES III NHGRI			Newton third law Newton third law of motion Newton third law of motion Newton Upper Falls Branch Library Newton Wellesley Orthopedic Associates Newton West Little League Newton's Newton's Newton's 2nd law Newton's 2nd law Newton's 3 laws of motion Newton's 3 laws of motion Newton's alloy Newton's Axioms Newton's Axioms Newton's balls Newton's binomial Newton's binomial series Newton's binomial series Newton's binomial theorem Newton's constant Newton's constant Newton's constant Newton's cradle Newton's difference quotient Newton's equations of motion Newton's first law Newton's first law Newton's first law of motion Newton's first law of motion Newton's formula Newton's identity Newton's inequality Newton's iteration Newton's law Newton's law Newton's law for fluids Newton's law of cooling Newton's law of gravitation Newton's law of gravitation Newton's law of gravitation Newton's law of gravitation Newton's law of motion Newton's law of motion Newton's law of resistance Newton's law of universal gravitation Newton's law of universal gravitation Newton's law of universal gravitation Newton's laws Newton's laws Newton's laws of motion Newton's laws of motion Newton's laws of motion Newton's laws of motion Newton's lens formula Newton's metal Newton's method Newton's One-Step Error Reconstructor Newton's quotient Newton's quotient Newton's quotient

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