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One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.
The exponent of the power to which a base number must be raised to equal a given number. Example: 2 is the logarithm of 100 to the base 10 (2=log10100). (10 must be raised to the power of 2 in order to equal 100)
An exponent used in mathematical equations to express the level of a variable quantity (or, the power to which a number must be raised to produce a specific result).
A logarithm of a given number is the value of the exponent indicating the power required to raise a specified constant, known as the base, to produce that given number. That is, if B is the base, N is the given  number and L is the logarithm, then BL = N. Since 103 = 1000, the logarithm to the base 10 of 1000 is 3.
the exponent required to produce a given number
a function that turns a power into an exponent
a magic number related to another number
a mathematical function that transforms either very large or very small numbers into a more meaningful number for us to visualise
a mathematical way of representing large changes with small values
a math term strongly tied to the concept of exponents
a method of representing large numbers originally developed for use with mechanical calculators
an exponent of some number "B" called the base
an exponent used in mathematical calculations to depict the perceived levels of variable quantities such as visible light energy, electromagnetic field strength, and sound intensity
a number, without physical units
a way of restating an exponent
the power to which a base (usually 10) must be raised to produce a given number. If the base is 10, the logarithm of 1000 is 3; the logarithm of 10,000 is 4; the logarithm of 100,000 is 5.
In common logarithms, representing a number by the power to which 10 must be raised to equal it. For example, 10 to the exponent (or power) 2 = 10 squared = 100. The log of 100 is therefore 2.
An alternate way to express an exponent. If loga(x) = y, then ay = x. In this representation, a is the base of the logarithm. For example, log10(100) = 2 (read “log base 10 of 100 equals 2”), or 102 = 100.
Alternate way to express an exponent. For example, log2 8=3 is equivalent to 23=8.
The exponent of the power to which a base number must be raised to equal a given number. An example: 2 is the logarithm of 100 to the base 10. One can look at this way: 10 * 10 = 100, which is the same as 102, and 2 is the exponent referred to above
Mathematical concept which forms the basis for the pH scale.
We call the positive number's based ( ; cannot equal with ) logarithm that exponent, which we get, if we raise to the th power. Symbol: a^logab = b; The natural logarithm: 10^lg b = b (The ^ sign means raising to a higher power)