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polarization of light

(Encyclopedia) polarization of light, orientation of the vibration pattern of light waves in a singular plane. Unpolarized light can be converted into a single polarized beam by means of the Nicol…

constellation, in astronomy

(Encyclopedia) CE5 Constellations: Southern sky CE5 Constellations: Southern sky CE5 Constellations: Southern sky constellation, in common usage, group of stars that appear to form a…

competition, in economics

(Encyclopedia) competition, in economics, rivalry in supplying or acquiring an economic service or good. Sellers compete with other sellers, and buyers with other buyers. In its perfect form, there…

valence, in chemistry

(Encyclopedia) valence, combining capacity of an atom expressed as the number of single bonds the atom can form or the number of electrons an element gives up or accepts when reacting to form a…

Latin Roots, Prefixes, and Suffixes

Latin was the language spoken by the ancient Romans. As the Romans conquered most of Europe, the Latin language spread throughout the region. Over time, the Latin spoken in different areas…

Sentence Agreement: Agree to Disagree

Agree to DisagreeSentence AgreementIntroductionCollective NounsIndefinite PronounsWalk This WayAgree to Disagree Like subjects and verbs, pronouns and antecedents (the words to which they refer)…

Introductions

  Introductions The introduction is the first sentence of your essay and it plays the dual role of setting the theme of your essay and engaging the reader. The introduction should not…

sound

(Encyclopedia) CE5 Sound waves: An air pressure wave radiating outward from a loudspeaker is perceived as sound. sound, any disturbance that travels through an elastic medium such as air, ground…