Why do you have to learn about LOGARITHMS?
Find out some of the uses of logarithms in our daily life. Click on the 'comments' link below to leave your comments. Remember to write in your register number as well as your name!
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Logarithms are useful in solving equations in which exponents are unknown. They have simple derivatives, so they are often used in the solution of integrals. The logarithm is one of three closely related functions. In the equation bn = x, b can be determined with radicals, n with logarithms, and x with exponentials.
In chemistry, the negative of the base-10 logarithm of the concentration of hydronium ions (H3O+, the form H+ takes in water) is the measure known as pH. The concentration of hydronium ions in neutral water is 10−7 mol/L at 25 °C, hence a pH of 7.
The Richter scale measures earthquake intensity on a base-10 logarithmic scale.
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chongzhuowen
- Musical intervals are measured logarithmically as semitones. The interval between two notes in semitones is the base-21/12 logarithm of the frequency ratio (or equivalently, 12 times the base-2 logarithm). Fractional semitones are used for non-equal temperaments.
- In astronomy, the apparent magnitude measures the brightness of stars logarithmically, since the eye also responds logarithmically to brightness.
- In computer science, logarithms often appear in bounds for computational complexity.
- In psychophysics, the Weber–Fechner law proposes a logarithmic relationship between stimulus and sensation.
- In information theory logarithms are used as a measure of quantity of information.
For daily uses of logarithms, we have erm, for calculating the interest for money in the bank, for calculating rates of chemical reactions in science,for the Richter scale measures earthquake intensity and for Musical intervals which are measured logarithmically as semitones.
There were others but these were the only ones i understood anyway...
Thank God for wikipedia :)
Florence :)
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