fixed+relation
41History of optics — Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek and Indian philosophers, and the development of geometrical optics in the Greco Roman… …
42Ibn Muqlah — Abu ali Muhammad Ibn ali Ibn Muqlah Shirazi (Persian: ابن مقله شیرازی) of Iranian Origin (born 886 in Baghdad died 20 July 940 there) was an Islamic calligrapher, one of the foremost of the Abbasid age. It is thought that he invented the thuluth… …
43List of gear nomenclature — Gears have a wide range of unique terminology known as gear nomenclature. Many of the terms defined cite the same reference work.[1] Contents 1 Addendum 2 Addendum angle 3 Addendum circle …
44economic forecasting — Prediction of future economic activity and developments. Economic forecasts, which range from a few weeks to many years, are widely used in business and government to help formulate policy and strategy. Macroeconomic forecasts predict the course… …
45specificity — 1. The condition or state of being specific, of having a fixed relation to a single cause or to a definite result; manifested in the relation of a disease to its pathogenic microorganism, of a reaction to a certain chemical …
46ratio — I noun amount, balance, correlation, degree, differential, fixed relation, measure, percentage, perspective, proportion, proportional relation, proportionality, quota, range, relative estimate, relative quantity, scale, share, standard II index… …
47Attic calendar — Greek calendar Greek calendar 1. Any of various calendars used by the ancient Greek states. Note: The {Attic calendar} divided the year into twelve months of 29 and 30 days, as follows: 1. Hecatomb[ae]on (July Aug.). 2. Metageitnion (Aug. Sept.) …
48Greek calendar — 1. Any of various calendars used by the ancient Greek states. Note: The {Attic calendar} divided the year into twelve months of 29 and 30 days, as follows: 1. Hecatomb[ae]on (July Aug.). 2. Metageitnion (Aug. Sept.). 3. Bo[ e]dromion (Sept. Oct.) …
49Leap second — A leap second is a one second adjustment that keeps broadcast standards for time of day close to mean solar time. Broadcast standards for civil time are based on Coordinated Universal Time (UTC), a time standard which is maintained using… …
50Voltage source — In electric circuit theory, an ideal voltage source is a circuit element where the voltage across it is independent of the current through it. A voltage source is the dual of a current source. In analysis, a voltage source supplies a constant DC… …
