Finding:

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   Lenses for SLR and DSLR cameras

   Some of the newest α mount lenses are designated "DT" for Digital Technology; these are for digital cameras with APS-C sensors, and will result in vignetting if used on a film SLR. ... http://books.google.com/books?id=5Hk1AAAAMAAJ&pg=PA222&dq=normal-lens+camera+date:0-1923&as_brr=1&ei=xtMeR8G8EZeGpwKf6KmHDQ
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   Centripetal force

   where it already is established that α = ρ. ... University Press. p. 406. http://books.google.com/books?id=eDM6AAAAMAAJ&pg=PA406&dq=%22osculating+circle%22&lr=&as_brr=0.
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   Golden ratio

   The angles in a triangle add up to 180°, so 5α = 180, giving α = 36°. ... http://books.google.com/books?id=r6WpMO_hREYC&pg=PA245&dq=
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   Google matrix

   A Google matrix is a particular stochastic matrix which is used by Google's PageRank algorithm. ... For the actual matrix, Google uses an α around 0.85.
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   Nuclear reaction

   Since α particles that hit the nucleus react more violently, elastic and shallow inelastic α scattering are sensitive to the shapes and sizes of the targets, like light scattered from a small black object. ... ↑ http://books.google.com/books?id=ZVgOLCXNoMoC&pg=PA495&lpg=PA495&dq=%22nuclear+reaction%22+parentheses+shorthand&source=web&ots=hVze64yN1C&sig=WQVgiNcZDKFD8nj_i24NInMmGVI&hl=en
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   Moiré pattern

   cos α ≈ 1 ... Springer. http://books.google.com/books?vid=ISBN3540425233&id=yb8otde21fcC&pg=RA1-PA198&lpg=RA1-PA198&ots=h6DOCc7wXo&dq=%22moire+pattern%22+nonlinear&sig=ayuTVZCBaBOnV-nI5hm6286RP_o.
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   Beer

   ↑ , A better control of beer properties by predicting acidity of hop iso-α-acids, Blanco Carlos A.; Rojas Antonio; Caballero Pedro A.; Ronda Felicidad; Gomez Manuel; Caballero. retrieved 13 September 2008 ... ↑ Google Books Ray Foley, Heather Dismore, Running a Bar For Dummies pp 211-212, For Dummies (2007), ISBN 0470049197
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   Step response

   Top: α = 4; Center: α = 2; Bottom: α = 0.5. ... ISBN 0-7923-7643-9. http://books.google.com/books?id=Xb0W1VsQFe0C&pg=PA98&dq=%22equivalent+two-pole+amplifier%22&lr=&as_brr=0&sig=LVB6t0wlg7WL7U_PB4eavGTP7Aw.
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   Opium

   ↑ Lodwick, Kathleen L. Crusaders Against Opium: Protestant Missionaries in China 1874-1917 (University Press of Kentucky) Online version at Google Books [ISBN 0813119243] ... α-Naphthaphenanthridines
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    Opioid

    A quick Google search on any day shows the following: ... α-chlorocodide • Azidomorphine • Chlornaltrexamine • Chloromorphide • Hydromorphazone • Morphazone • Oxymorphazone • Pholcodine

Explore the following pages on Powerset:

• Lenses for SLR and DSLR cameras,
• Centripetal force,
• Golden ratio,
• Google matrix,
• Nuclear reaction,
• Moiré pattern,
• Beer,
• Step response,
• Opium,
• Opioid