How does a slide rule work?
A slide rule works by adding or subtracting the numerical exponents of numbers for multiplication or division, respectively. Thus, numbers to be multiplied or divided are converted to their logarithmic values and their exponents are added or subtracted.
What functions can you do on a 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.
Are slide rules collectible?
There are straight, circular and cylindrical slide rules, all collectible. Major manufacturers included Keuffel and Esser, Pickett, Gilson, Dietzgen, Post (which became Teledyne), Faber-Castell, Aristo, and others. Early slide rules were made of wood and celluloid, while later ones tended to be plastic or metal.
How do you divide a slide rule?
To divide with a slide rule, you reverse the process you used for multiplication. Suppose you want to divide 8 by 4. 1. Line up the 4 on the C (sliding) scale with the 8 on the D (frame) scale.
Who made the best slide rules?
Faber-Castell 2/83N Novo-Duplex: Size 38 x 7 cm, 30 scales, plastic. This model is regarded by some as one of the finest slide rules ever made. Its combination of size, build, sophistication of scales offered and attractive use of colour gives a slide rule that impresses!
What is a slide rule pass?
A slide rule is a tool used by mathematicians and is associated with accuracy and so a slide rule pass is an extremely accurate pass; often one that goes through a narrow or small space. These kind of passes, although difficult to produce, tend to open up a defence to create a clear chance.
Is the slide rule still used today?
There are many pages about slide rules on the web, and you can still buy brand new slide rules (40 years old but never used, and still in their factory supplied box) in various places. The rule is about 13.5 inches long and 2.25 inches wide.
Who developed slide rule?
William Oughtred
What was invented in 1632?
In 1632 another English mathematician, William Oughtred, designed the first adjustable logarithmic rule; as shown in the photograph, it was circular. Oughtred also designed the first linear slide rule, although the familiar inner sliding rule was invented by the English instrument-maker Robert Bissaker in 1654.
When was Napier invented?
1617
What year was the slide rule invented?
1620s
Who invented the calculator?
Texas Instruments
Where was Napier invented?
Scotland
How do you make Napier bones?
To make Napier’s rods (or bones), you need ten strips of paper each divided into 9 parts, one for each of the first 9 multiples of the number at the top of strip as shown below. In each strip, a slanting line separates the tens digit from the units digit. This is written as shown in the above diagram.
What is the function of Napier rods?
Calculation of products and quotients of numbers
When were Napier’s rods most widely used?
1960s
What was Napier bones made of?
Wood
Which device was made of rods with number printed on them?
Napier’s bones
Which is the first calculating device?
abacus
Why is it called Napier’s bones?
These slips are written on the surface of ten rods, later on called Napier’s rods (the best sets of Napier’s numbering rods were made of ivory, so that they looked like bones, which explains why they are now known as Napier’s bones).
Who found abacus?
Tim Cranmer
Which type of Abacus is best?
Lee’s improved Abacus It is a combination of the Chinese Suanpan (5+2) and the Japanese Sorobon (4+1) structure. Undeniably, this invention was the most efficient form of the abacus.
What is Abacus full form?
ABACUS – Abundant Beads, Addition and Calculation Utility System. It is a counting frame. It is used as a calculating tool. Earlier it was popular in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system.
What is another name for Abacus?
Abacus Synonyms – WordHippo Thesaurus….What is another word for abacus?
| adding machine | computer |
|---|---|
| calculator | totaliser |
| totalizer | electronic calculator |
| pocket calculator | adder |
| PDA | ready reckoner |