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stroboscope

(Encyclopedia)stroboscope strŏbˈəskōp [key], optical instrument for making a moving object appear to be slowed down or stationary. This effect is created by interrupting the observer's view so that the object i...

asteroid

(Encyclopedia)CE5 The asteroid belt lies between the orbits of Mars and Jupiter. Gaps where no asteroids are found are called Kirkwood gaps. The Trojan asteroids share Jupiter's orbit with the planet. asteroid,...

cult

(Encyclopedia)cult, ritual observances involved in worship of, or communication with, the supernatural or its symbolic representations. A cult includes the totality of ideas, activities, and practices associated wi...

fault

(Encyclopedia)CE5 Types of faults fault, in geology, fracture in the earth's crust in which the rock on one side of the fracture has measurable movement in relation to the rock on the other side. Faults on othe...

infrared radiation

(Encyclopedia)infrared radiation, electromagnetic radiation having a wavelength in the range from c.75 × 10−6 cm to c.100,000 × 10−6 cm (0.000075–0.1 cm). Infrared rays thus occupy that part of the electrom...

Hezir

(Encyclopedia)Hezir hēˈzĭr [key], in the Bible. 1 Chief priest in the time of David. 2 Signer of the covenant. ...

Gimzo

(Encyclopedia)Gimzo gĭmˈzō [key], town, SW ancient Palestine, N of Gezer. Second Chronicles reports that it was conquered by the Philistines in Ahaz's time. ...

coherence

(Encyclopedia)coherence, constant phase difference in two or more Waves over time. Two waves are said to be in phase if their crests and troughs meet at the same place at the same time, and the waves are out of pha...

Cleomenes I

(Encyclopedia)Cleomenes I klēŏmˈĭnēz [key], d. c.489 b.c., king of Sparta after 518 b.c. In accordance with Sparta's policy of helping oligarchies in other states at the expense of the tyrants or the people, C...

amenorrhea

(Encyclopedia)amenorrhea āmĕnˌərēˈa, əmĕnˌ– [key], cessation of menstruation. Primary amenorrhea is a delay in or a failure to start menstruation; secondary amenorrhea is an unexpected stop to the menstr...