color-temperature meter
21Aperture — For other uses, see Aperture (disambiguation). f stops demonstrated on a lens …
22reciprocal megakelvin — (MK 1) a unit used in colorimetry and photography to measure the wavelength of light, especially for selecting filters to adjust the color temperature. Light waves of a specific wavelength w meters can be assigned a temperature T using the… …
23Portal:Photography — Wikipedia portals: Culture Geography Health History Mathematics Natural sciences People Philosophy Religion Society Technology …
24Ocean thermal energy conversion — Temperature differences between the surface and 1000m depth in the oceans Ocean Thermal Energy Conversion (OTEC) uses the difference between cooler deep and warmer shallow or surface ocean waters to run a heat engine and produce useful work,… …
25Resistor — A typical axial lead resistor Type Passive Working principle Electrical resistance Invented Ge …
26photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
27Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea …
28Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …
29pH — For other uses, see PH (disambiguation). Acids and Bases Acid dissociation constant Acid base extraction Acid–base reaction Acid–base titration Dissociation c …
30Geology of Mars — Mars   Mars as seen by the Hubble Space Telescope Designations …
