1. Real Life Application of Logarithms
Chua Cong Yang 3S2’03

2. Content Definition Examples History Logarithm Identities
Real Life application of logarithms to different fields
Chemistry
Quantifying Decibels
Richter scale
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3. Definition
The logarithm of a number y with respect to base b is the exponent to which b has to be raised in order to yield y
For example: b x= y Can be expressed as: logb y= x
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4. Examples Some examples on logarithms: 103 = 1000 Can be expressed as:
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5. History
Logarithms was first introduced by John Napier in the early 17th century as a method to simplify calculations and large indices.
However, logarithms has been rapidly developed and used in many fields of science now.
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6. History
Before the invention of calculators, math has to be done by hand.
The invention of logarithms has simplified the common expressions of addition, subtraction, power and root
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7. History
In addition, logarithms continues to be used in our lives today.
The volume of music is based on the logarithmic scale, the magnitude of an earthquake is also based on a logarithmic scale.
Logarithm is widely applied in our lives.
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8. Logarithm Identities Identities Product Law Change of Base Quotient
Power Law
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9. Power Law
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10. References
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11. References
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12. References
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13. References
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14. References
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15. References
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16. References
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17. References
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18. References
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19. References
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20. References- Pictures http://www.daviddarling.info/images/Napier.jpg
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21. References -Text
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