What are the applications of logarithms?
Some examples of the applications of logarithms include the Richter scale for measuring earthquakes, the decibel scale for measuring sound, orders of magnitude, and applications in data analysis. Here, we will look at these applications in more detail. Relevant for … Learning about various applications of logarithms.
Why are logarithmic scales important in data science?
Much of data science is modeling reallife situations, so logarithmic scales are vital. Google gives every page on the web a score (PageRank), which is roughly a measure of the website’s authority and importance of the page. This is a logarithmic scale, which means that PageRank counts the number of digits in the score.
What is the real life scenario of logarithms?
The Real Life scenario of Logarithms is to measure the acidic, basic or neutral of a substance that describe a chemical property in terms of pH value. To know this concept in details, click here.
What are the different types of logarithms?
Note that logarithms are always calculated for a base. The examples provided above are for base10 which is known as common logarithm. The other frequently used “bases” are 2 (binary logarithm) and a very special number ‘e’ 2.71828 (natural logarithm)
What is logarithms inverse?
Article Summary: Logarithms are mainly the inverse of the exponential function. Historically, Math scholars used logarithms to change division and multiplication problems into subtraction and addition problems, before the discovery of calculators.
Why do we use logarithms?
Historically, Math scholars used logarithms to change division and multiplication problems into subtraction and addition problems, before the discovery of calculators . In recent times, Math scholars and students use logarithms to solve exponential equations and to solve numbers extending from very big to small expression in a more refined manner.
What is a logarithm?
Logarithms are a Math function, which tackle this guesswork avoiding time consumption to solve such problems easily. Logarithms simplify the Math and help to write the relationships in an understandable Math function.
How to use logarithms in geology?
1. To estimate the data in logs obtained from magnitude scales for earthquakes. 2. Geologists also make use of logarithms to find the GutenbergRichter relation. 3. Next, they also use logs to calculate alterations in atmospheric CO 2, population growth. 4.
Orders of magnitude
When we express something like “a 6 digit salary”, we are describing the numbers depending on how many powers of 10 they have (they are in the tens, hundreds, thousands, etc). Adding a digit means multiplying by 10. For example, 1 has one digit and 100,000 has six digits.
Richter scale
The Richter scale is a base10 logarithmic scale. This scale defines the magnitude of an earthquake as the logarithm of the ratio of the amplitude of seismic waves to an arbitrary standard amplitude:
Decibel scale
where, P is the power, which indicates the energy that flows per unit area, A, which is perpendicular to the direction in which the sound wave travels.
Applications in data analysis
Logarithms are widely used in data analysis, which in turn is used in data science and computational machine learning.
Google PageRank algorithm
Google gives every page on the web a score (PageRank), which is roughly a measure of the website’s authority and importance of the page. This is a logarithmic scale, which means that PageRank counts the number of digits in the score.
See also
Interested in learning more about logarithms? Take a look at these pages:
Ok, ok, we get it: what are logarithms about?
Logarithms find the cause for an effect, i.e the input for some output
Onward and upward
If a concept is wellknown but not wellloved, it means we need to build our intuition. Find the analogies that work, and don’t settle for the slop a textbook will trot out. In my head:
Why do we use logarithmic scales?
Logarithmic scales in science. Because logarithms relate multiplicative changes to incremental changes, logarithmic scales pop up in a surprising number of scientific and everyday phenomena. Take sound intensity for example: To increase a speaker’s volume by 10 decibels (dB), it is necessary to supply it with 10 times the power.
What is the significance of the manuscript of John Napier?
John Napier’s 1614 work, “Mirifici Logarithmorum Canonis Descriptio” (Description of the Wonderful Canon of Logarithms), contained 90 pages of numerical tables relating to logarithms. These were of particular utility for simplifying calculations. In the following example, a method using logarithms takes advantage of the fact that it’s easier to add rather than multiply. The following example isn’t really made any simpler, but it does demonstrate the process of using logarithmic tables.
Why were logarithms important?
Before the invention of mechanical (and later electronic) calculators, logarithms were extremely important for simplifying computations found in astronomy, navigation, surveying, and later engineering.
What is a logarithm?
A logarithm is a mathematical operation that determines how many times a certain number, called the base, is multiplied by itself to reach another number. Because logarithms relate geometric progressions to arithmetic progressions, examples are found throughout nature and art, such as the spacing of guitar frets, mineral hardness, …
What is the inverse of an exponential?
A logarithm can be thought of as the inverse of an exponential, so the above equation has the same meaning as: Since 2 x 2 x 2 x 2 x 2 x 2 = 64, 2 6 = 64. This means if we fold a piece of paper in half six times, it will have 64 layers. Consequently, the base2 logarithm of 64 is 6, so log 2 (64) = 6.
How many dilutions of alcohol are left after 11 C?
Thus, after 11 C dilutions, there will only be one molecule of the original alcohol left. (Aside, this is less than half of the 30 C dilutions common in homeopathy, which shows why the practice is irreconcilable with modern chemistry.)
What is the infant’s response to the logarithm?
An infant’s response is smaller the closer the numbers are together, but what’s interesting is how an infant perceives “closeness.”. For example, eight and nine are perceived much closer to each other than one and two. According to Dehaene, “they seem to care about the logarithm of the number.”.
RealLife Application of Logarithm Earthquake Intensity Measurement
To know about the reallife scenario of logarithms we start as an earthquake intensity measurement. For this, first we let to know some knowledge related to the earthquake measurement instrument known as Seismograph. which produces a graph output known as Seismograph.
Real life scenario of logarithms
The Richter scale is a base10 logarithmic scale, which defines magnitude as the logarithm of the ratio of the amplitude of the seismic waves to an arbitrary, minor amplitude.
Real Life Application of Logarithms in Determining pH Value
The RealLife scenario of Logarithms is to measure the acidic, basic or neutral of a substance that describes a chemical property in terms of pH value. To know this concept in detail, click here.
RealLife Application of Logarithms in Measuring Sound Intensity
As we knew that the sound carries energy and it is defined as I = P/A, where P is the power through which the energy E flows through per unit area A which is perpendicular to the direction of travel of the sound wave.
Real Life Application of Logarithm in Calculating Complex Values
Sometimes we need to find the values of some complex calculations like x = (31)^ (1/5) (5th root of 31), finding a number of digits in the values of (12)^256 etc. To solve these types of problems, we need to use the logarithms.
What is the logarithm of 10000?
The logarithm is a measure of that “effort” or “time taken”. Logarithm of 10000 on base 10 is 4 which is more than the logarithm of 1000 (3). More effort or more time required to reach 10000 as compared to 1000.
What is the purpose of logarithm?
The simple answer is: Logarithm of a number gives a measurement of how “big” that number is in comparison to another number. The human mind is capable of processing and comparing numbers that are on the same scale or similar scale. e.g let’s say you are given the weights of different people (adults) of a group.
What is the study of nature?
S cience is the study of nature and a lot of scientific endeavors are about studying and measuring changes that occur in nature. We use numbers to express these measurements. If you think about “changes”, they can be only of two types — either a quantity increases (grows) or decreases (decays). The fundamental ways to capture these changes are the basic arithmetic operations of Addition, Subtraction, Multiplication, and Division.
How big is Jupiter in scale?
On the topleft, all four are shown together with sizes to scale. On the topright, Jupiter is shown to have a diameter ten times smaller (0.10045×) than the diameter of the Sun. On the bottomleft, Jupiter is shown to be eleven times (10.9733×) the diameter of the Earth.
Is logarithm a counterpart?
This is what a logarithm is. It’s an arithmetic operation. And just like addition and subtraction are counterparts, multiplication and division are counterparts, in the same way, Exponentiation and Logarithms are counter parts. Read it like this …. 10 has to be multiplied by itself 4 times to reach 10000.
Orders of Magnitude
Richter Scale

The Richter scale is a base10 logarithmic scale. This scale defines the magnitude of an earthquake as the logarithm of the ratio of the amplitude of seismic waves to an arbitrary standard amplitude: where, A is the amplitude of the earthquake measured with a seismometer from approximately 100 km from the epicenter of the earthquake and Sis the standard amplitud…
Decibel Scale

Sound carries energy and its intensity is defined as: where, P is the power, which indicates the energy that flows per unit area, A, which is perpendicular to the direction in which the sound wave travels. Sound intensity is measured in terms of volume, which is measured in terms of a logarithm. Therefore, the intensity of the sound is defined as: In this definition, dB represents de…
Applications in Data Analysis

Logarithms are widely used in data analysis, which in turn is used in data science and computational machine learning. The logitplays a very important role in logistic regression. All probabilities can be easily converted to logit. Logarithmic transformations are also important to make it easier to see patterns in your data. Using logarithmic trans…
Google Pagerank Algorithm

Google gives every page on the web a score (PageRank), which is roughly a measure of the website’s authority and importance of the page. This is a logarithmic scale, which means that PageRank counts the number of digits in the score. For example, a site with a PageRank of 2 (2 digits) is 10 times more popular than a site with a PageRank of 1. CNN’s PageRank is 9, so ther…
See Also

Interested in learning more about logarithms? Take a look at these pages: 1. Properties of Logarithms – Proofs and Examples 2. Graphs of Logarithmic Functions