Technology / Television (TV) / Horizontal Frequency: The inverse of the time it takes for a monitor to scan from the beginning of one line to the beginning of the next line: typically stated in kilohertz.
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Horizontal Adjective Synonyms: level, flat, plane, prone, supine
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Business / Search Engine Optimization (SEO) / Inverse Document Frequency (IDF): Inverse Document Frequency is a term used to help determine the position of a term in a vector space model. IDF = log ( total documents in database / documents containing the term ) MORE
Technology / Motorcycle / Horizontally Opposed: Type of engine layout in which the cylinders are placed at 180?° to one another. It is also described as a flat twin or flat four, etc. Also known as a boxer engine. MORE
Technology / Home Audio / Low Frequency: Refers to radio frequencies within the 30-300 khz band. In audio it usually refers to frequencies in the 20-160 Hz band. MORE
Science / Geology / Original Horizontality: One of the principles of relative dating. Based upon the good assumption that sedimentary rocks are deposited in horizontal or nearly horizontal layers: then if sedimentary layers are found in an incl MORE
Technology / Cell Phones / Radio Frequency (RF): The spectrum of electromagnetic energy between audio and light: 500 KHz to 300 GHz. MORE
Technology / Radar / Pulse Repetition Frequency (PRF): The number of radar pulses transmitted each second. The pulse transmission rate is automatically lengthened for longer ranges. MORE