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Stellar parallax is the basis for the parsec, which is the distance from the Sun to an astronomical object that has a parallax angle of one arcsecond. (1 AU and 1 parsec are not to scale, 1 parsec = ~206265 AU) Stellar parallax is the apparent shift of position of any nearby star (or other object) against the background of distant stars.
Instances: Mosaic plots (also known as Marimekko, or Mekko, charts) Projected (1) frequency and (2) intensity of extreme "10-year heat waves" are connected in pairs of horizontal and vertical bars, respectively. Bars are distinguished by (3) color-coded primary category (degree of global warming). Orthogonal (orthogonal composite) bar chart
ISO 3166-1 alpha-3 – three-letter country codes which allow a better visual association between the codes and the country names than the alpha-2 codes. ISO 3166-1 numeric – three-digit country codes which are identical to those developed and maintained by the United Nations Statistics Division, with the advantage of script (writing system ...
Iron wire 1 km long and 4 mm 2 cross section Matthiessen 13.59 1 mi (1.609 km) of 1 ⁄ 16-inch-diameter (1.588 mm) pure annealed copper wire at 15.5 °C Varley 25.61 One mile of special 1 ⁄ 16-inch-diameter copper wire German mile 57.44 A German mile (8,238 yd or 7,533 m) of iron wire 1 ⁄ 6 in (4.233 mm) diameter Abohm: 10 −9
IP65 touchscreen display IP65 LED lamp. The IP code or ingress protection code indicates how well a device is protected against water and dust. It is defined by the International Electrotechnical Commission (IEC) under the international standard IEC 60529 [1] which classifies and provides a guideline to the degree of protection provided by mechanical casings and electrical enclosures against ...
While calipers are the most typical use of vernier scales today, they were originally developed for angle-measuring instruments such as astronomical quadrants. In some languages, the vernier scale is called a nonius after Portuguese mathematician and cosmographer Pedro Nunes (Latin Petrus Nonius, 1502–1578).
The later color video version is RS-170A which shows color burst and the 4 color field sequence of NTSC. The RS-170A version is only a tentative standard, and was never formally adopted. NAB Engineering Handbook Seventh Edition. [1] EIA-189A Formerly RS-189A. Encoded color bar signal (preceded SMPTE color bars). EIA-198 EIA RS-198-A? EIA RS-198 ...
In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), value , and chroma (color intensity). It was created by Albert H. Munsell in the first decade of the 20th century and adopted by the United States Department of Agriculture (USDA) as the official color system ...