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Why is the graph of log against pH a straight line?
pH is a logarithmic scale; because of the way calculus and maths works, graphing such a scale against a log results in a straight line.
Logarithmic scales are used to measure what?
Whenever the data covers a very large range of values a log scale if very useful. Earthquakes and hearing are common examples.
The log of a quotient is the log of a numerator divided by the log of the denominator?
For a quotient x/y , then its log is logx - log y . NOT log(x/y)
How do you get log in the wwwfriendstercom?
to log in friendster.com
How do you solve k equals log4 91.8?
k=log4 91.8 4^k=91.8 -- b/c of log rules-- log 4^k=log 91.8 -- b/c of log rules-- k*log 4=log91.8 --> divide by log 4 k=log 91.8/log 4 k= 3.260
How are logarithms used in our society?
Many scales such as sound and PH are log scales. The scale used to measure earthquakes is also a log scale. Whenever the data has a very wide range, a log scale might help.
What is the brightness of a star measurable by a scale called?
It is called the magnitude scale. It is a log scale.
Why semi log paper is named so?
One axis (usually the vertical axis) is on a log scale, the other is a linear scale.
Why is the graph of log against pH a straight line?
pH is a logarithmic scale; because of the way calculus and maths works, graphing such a scale against a log results in a straight line.
Explain how to use a Doyle log scale?
The Doyle Log Scale, developed around 1825, is based on a mathematical formula and is widely used throughout the southern United States. This rule allows for a saw kerf of 5/16 inch (most circular mills). Because of this, the Doyle Rule is somewhat inconsistent; it underestimates small logs and overestimates large logs. To use a Doyle Log Scale measure the diameter of the log (not including the bark) and the length. Then using the Doyle scale you can calculate the board foot content of a log.
Why is the PH scale called a log scale?
The pH scale is called a log scale because each unit increases or decreases logarithmically. What this means is that if you were to go from a pH of 7 to a pH of 8 you have increased your concentration of -OH ions ten fold or from a pH of 7 to a pH of 9 would be a 100 fold increase of -OH concentration. Incidentally, pH refers to a mathematical equation where p is the inverse log of H+ (acid/protons) concentration in solition. Thus we are measuring the inverse log concentration of H+ ions or simply put: pH.The equation looks like the following: pH = -log[H+]
What are verners?
Verners are a measuring device used to measure size that is based on the log scale.
What makes up PH scale?
The Ph scale doesn't have units it's a model to show where solutions rank based on the -Log of the concentration of H+ ions
What is a semi-log scale?
It is a coordinate system or graph paper in which one axis (usually the y-axis) is to a logarithmic scale and the other (x-axis) is "normal".
Why the semi log was in linear?
Semilog (applied to a graph) means that one scale is logarithmic, the other not. The prefix "semi-" means "half" or "partially". The scale that is not logarithmic is, of course, linear.
What does log do on your calculator?
log is short for logarithm log(base a)x=y is the same as saying a^y=x Normal log is base 10. So if you see log with no subscript after it, it is log base 10. So when you press the log button on your calculator and put a number after it you are asking 10 to what power =100? And 10 to the second power = 100 so you will get an answer of 2. A log (base 5)625 you would be asking, 5 to what power is equal to 625? The answer is 4 because 5^4=625 Logarithms are used to simplfy complex calculations. The Richter scale for measuring earth quakes is expressed in the form of a logarithm. A increase of 1 on the scale means an increase of 10 times.
What is the difference between the Doyle scale and the International scale of measuring logs for lumber?
== == Since each of the log rules was developed using different methods with different assumptions, it is logical that they will not always result in the same volumes for given size logs. Table 1 shows a comparison of the three log rules for 16-foot logs ranging in diameter from 6 to 40 inches. Compared to the International Rule, both the Scribner and Doyle Rules underscale logs of smaller diameters. For example, a 12-inch-diameter log contains 95 board feet on the International scale, 80 board feet on the Scribner scale, and 64 board feet on the Doyle scale. Overall, the Doyle Rule will result in lower log volumes than the International Rule, up to a log diameter of 30 inches. Since nearly all logs in Virginia are below 30 inches in diameter, for all practical purposes the Doyle Rule will underestimate the actual board footage. If you are selling stumpage or logs, it is important to recognize the differences in volume associated with the different log rules. Since stumpage or log prices are based on the timber or log volume, you will receive substantially more income with the rules that scale your sizes higher. For example, take a log of 16 inches diameter x 16 feet in length and a value of $100 per thousand board feet. This log would have the following volumes and values based upon the different log rules: {| ! LogDiameter(in.) ! Log Rule ! Volume(board feet) ! Value ($) | 16 International 180 18.00 16 Scribner Decimal C 160 16.00 16 Doyle 144 14.40 |}
