# What is order of magnitude?

• (noun): A number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10.
Synonyms: magnitude

## Order Of Magnitude

An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. In its most common usage, the amount being scaled is 10 and the scale is the (base 10) exponent being applied to this amount (therefore, to be an order of magnitude greater is to be 10 times as large). Such differences in order of magnitude can be measured on the logarithmic scale in "decades" (i.e. factors of ten).

### Some articles on order of magnitude:

Order Of Magnitude - Non-decimal Orders of Magnitude - Extremely Large Numbers
... For extremely large numbers, a generalized order of magnitude can be based on their double logarithm or super-logarithm ... neither method is suitable directly, but of course the generalized order of magnitude of the reciprocal can be considered ...
Mining Feasibility Study - Order of Magnitude
... Order of magnitude feasibility studies (sometimes referred to as "scoping studies") are an initial financial appraisal of an indicated mineral resource ... Depending on the size of the project an order of magnitude study may be carried out by a single individual ... Order of magnitude studies are developed copying plans and factoring known costs from existing projects completed elsewhere and are accurate to ...

### More definitions of "order of magnitude":

• (noun): A degree in a continuum of size or quantity.
Example: "An explosion of a low order of magnitude"
Synonyms: order

### Famous quotes containing the words magnitude and/or order:

Government is either organized benevolence or organized madness; its peculiar magnitude permits no shading.
John Updike (b. 1932)

There surely is a being who presides over the universe; and who, with infinite wisdom and power, has reduced the jarring elements into just order and proportion. Let speculative reasoners dispute, how far this beneficent being extends his care, and whether he prolongs our existence beyond the grave, in order to bestow on virtue its just reward, and render it fully triumphant.
David Hume (1711–1776)