(The types and nature of these waves are described in the section Seismic waves.)
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Magnitude is also a measure of the brightness of a star as it appears from earth. the brightness of a star or other celestial body as viewed by the unaided eye and expressed by a mathematical ratio of 2.512: a star of the first … Magnitude definition is - great size or extent. …be derived from the apparent magnitude of the star if there are any means of knowing the absolute magnitude of the star—i.e., the magnitude the star would have at the standard distance of 10 parsecs. Search Britannica The brighter the object, the lower the number assigned as a magnitude.
Login All rights reserved.the brightness of a star or other celestial body as viewed by the unaided eye and expressed by a mathematical ratio of 2.512: a star of the first magnitude is approximately 2½ times as bright as one of the second magnitude and 100 times brighter than one of the sixth magnitude. How to use magnitude in a sentence.
Published by Houghton Mifflin Harcourt Publishing Company. 1. magnitude - the property of relative size or extent (whether large or small); "they tried to predict the magnitude of the explosion"; "about the magnitude of a small pea".
the apparent brightness of a celestial body expressed on … (The types and nature of these waves are described in the section Seismic waves.)
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She found a correlation between brightness… It can be calculated from the square root of the total of the squares of of the individual vector components. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox.
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Some of them were close enough to have measurable parallaxes so that their distances and thus their intrinsic brightnesses could be determined.
Also called visual magnitude, apparent magnitude. An object that is 5 units less than another object on the magnitude scale is 100 times more luminous.
Earthquake magnitude is a measure of the “size,” or amplitude, of the seismic waves generated by an earthquake source and recorded by seismographs. Magnitude, in astronomy, measure of the brightness of a star or other celestial body.
Our editors will review what you’ve submitted and determine whether to revise the article.Apparent magnitude is the brightness of an object as it appears to an observer on Bolometric magnitude is that measured by including a star’s entire radiation, not just the portion visible as light.
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The magnitude of a vector is its size. Your preference has been recorded Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Narrow-band magnitudes are based on slightly wider segments of the spectrum and broad-band magnitudes on areas wider still.
By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Each integral value represents a brightness 2.512 times greater than the next highest integral valuea measure of the size of an earthquake based on the quantity of energy released: specified on the Richter scaleThe degree of brightness of a star or other celestial body, measured on a logarithmic scale in which lower numbers mean greater brightness, such that a decrease of one unit represents an increase in brightness by a factor of 2.512.
a number assigned to a quantity, such as weight, and used as a basis of comparison for the measurement of similar quantities.