blackbody spectrum
71Effective temperature — Star The effective temperature of a star is the temperature of a black body with the same luminosity per surface area (mathcal{F} {Bol}) as the star and is defined according to the Stefan–Boltzmann law mathcal{F} {Bol}=sigma T {eff}^4. Notice… …
72Modulation transfer function (infrared imaging) — The Modulation Transfer Function (MTF) is used to approximate the position of best focus of an infrared imaging system. In an imaging system, best focus is typically achieved when the MTF is between 0.4 and 0.6; most often at 0.5 (50% cutoff… …
73Nobel Prize winners by name — ▪ Table Nobel Prize winners by name A B C D E F G H I J K L M N O P Q R S T U V W Y Z A name year category country* achievement literary area Abrikosov, Alexey A. 2003 physics U.S. discoveries… …
74Nobel Prize winners by year — ▪ Table Nobel Prize winners by year 1901–10 1941–50 1981–90 1911–20 1951–60 1991–2000 1921–30 1961–70 2001–08 1931–40 1971–80 1901–10 year category name country* achievement literary area 1901 chemistry Henricus van t (Hoff, Jacobus Henricus van… …
75Nobel Prize winners by category (physics) — ▪ Table TR class= oec even > ss= oec even > Nobel Prize winners by category (physics) year name country* achievement 1901 Röntgen, Wilhelm Conrad Germany discovery of X rays 1902 Lorentz, Hendrik Antoon The Netherlands investigation of the… …
76Color–color diagram — In astronomy, color–color diagrams are a means of comparing the apparent magnitudes of stars at different wavelengths. Astronomers typically observe at narrow bands around certain wavelengths, and objects observed will have different brightnesses …
77Timeline of cosmology — This timeline of cosmological theories and discoveries is a chronological catalog of the evolution of humankind s understanding of the cosmos over the last two plus millennia. Modern cosmological conceptions follow the development of the… …
78Incandescence — is the emission of light (visible electromagnetic radiation) from a hot body due to its temperature. [cite book | title = Treatise on Heat author = Dionysius Lardner | publisher = Longman, Rees, Orme, Brown, Green Longman | year = 1833 | url =… …
79Stochastic electrodynamics — In theoretical physics, Stochastic electrodynamics (SED) refers to a theory which posits that the interaction of elementary particles with the vacuum radiation field, or zero point field, is ultimately responsible for various familiar quantum… …
80Ultraluminous X-ray source — An ultra luminous X ray source (ULX) is an astronomical source of X rays that is not in the nucleus of a galaxy, and is more luminous than 1039 erg/s (1032 watts), assuming that it radiates isotropically. Typically there is about one ULX per… …
