(in visual photometry)
41W. H. R. Rivers — Photograph of Rivers taken by Henry Maull Born 12 March 1864(1864 03 12) …
42Candela — This article is about the unit of luminous intensity. For other uses, see Candela (disambiguation). Photopic (black) and scotopic[1] (green) luminosity functions. The photopic includes the CIE 1931 standard[2] …
43Procyon — This article is about the star. Procyon is also the mammalian genus to which raccoons belong. Starbox begin name=Procyon A/B Starbox image caption=The position of Procyon. Starbox observe epoch=J2000 constell=Canis Minor ra=07h 39m 18.1/17.7s dec …
44Mount John University Observatory — The Microlensing Observations in Astrophysics (MOA) telescope dome at the top of Mount John …
45Coefficient of utilization — A coefficient of utilization (CU) is a measure of the efficiency of a luminaire in transferring luminous energy to the working plane in a particular area. The CU is the ratio of luminous flux from a luminaire incident upon a work plane to that… …
46Lambert (unit) — The lambert (symbol L, la or Lb) is a non SI unit of luminance named for Johann Heinrich Lambert (1728–1777), a Swiss mathematician, physicist and astronomer. A related unit of luminance, the foot lambert, is used in the lighting, cinema and… …
47Contrast (vision) — Left side of the image has low contrast, the right has higher contrast …
48Galaxy — This article is about the astronomical structure. For other uses, see Galaxy (disambiguation). NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light years in diameter and approximately 60 million light… …
49Alpha Andromedae — α Andromedae Observation data …
50One-shot learning — is an object categorization problem of current research interest in computer vision. Whereas most machine learning based object categorization algorithms require training on hundreds or thousands of images and very large datasets, one shot… …
