Is it slide rule or slide ruler?
Slide rules are typically rectangular and about the size of a ruler. They are divided into thirds, the top and bottom are fixed in place, but the middle section slides back and forth. Each section has scales — numbers and line marks for calculations.
What is a slide rule in mathematics?
slide rule, a device consisting of graduated scales capable of relative movement, by means of which simple calculations may be carried out mechanically.
Do engineers still use slide rules?
The slide rule is gone but not lost. This gallery illustrates why. There was a time not that long ago when every type of engineer had a slide rule. But the advent of semiconductor technology and the creation of handheld computers made the slide rule obsolete.
Is a slide rule a computer?
The slide rule is a mechanical analog computer. The slide rule is used primarily for multiplication and division, and also for functions such as exponents, roots, logarithms, and trigonometry, and typically not for addition or subtraction.
When was the slide rule used?
The slide rule was invented by William Oughtred in the 1600’s, but only began to be widely used in the mid 1800’s after a French artillery officer named Amedee Mannheim developed a version that became popular among engineers. By the early 1900’s engineering students in the US were commonly taught to use slide rules.
Can slide rule be used to measure length?
Though similar in name and appearance to a standard ruler, the slide rule is also not meant to be used for measuring length or drawing straight lines. As the rulers each have a logarithmic scale, it is possible to align them to read the sum of the logarithms, and hence calculate the product of the two numbers.
What is the purpose of a slide rule?
To serve as a mechanical analog computer
Slide rule/Purpose
What are the example of slide rules?
A slide rule requires the user to separately compute the order of magnitude of the answer in order to position the decimal point in the results. For example, 1.5 × 30 (which equals 45) will show the same result as 1,500,000 × 0.03 (which equals 45,000).
What is the function of slide rule?
The slide rule is used primarily for multiplication and division, and also for functions such as exponents, roots, logarithms , and trigonometry, but typically not for addition or subtraction. Though similar in name and appearance to a standard ruler, the slide rule is not meant to be used for measuring length or drawing straight lines.
Where can I buy a slide rule?
These still show up occasionally, but they often command higher prices than good quality used rules. The most obvious places to look for slide rules today are flea markets and specialty antique shops, where affordable deals can sometimes still be found.
What are the different types of slide rules?
There are two main types of cylindrical slide rules: those with helical scales such as the Fuller, the Otis King and the Bygrave slide rule, and those with bars, such as the Thacher and some Loga models.
What replaced the slide rule?
A slide rule, one of the last vestiges of geek nerddom in the fifties and sixties, is a remarkable invention. Unfortunately, having been replaced by the electronic calculator, the slide rule has fallen into disuse, which is a shame because it is an excellent conceptual tool for visualizing how to do computations with logarithmic numbers.