Before there were apps for tablets and smartphones, before mathematics education software was easily installed on personal computers, before electronic calculators entered professional practice and ...

Primarily for multiplication and division, the slide rule has two stationary sets and one sliding set of numbers in the center. To multiply, numbers are added; to divide, numbers are subtracted.

let’s talk about slide rules in general. The Reverend [William Oughtred] (who probably introduced X as the multiplication symbol) developed the slide rule in the 17th century, so they’ve been ...

This merger added a range of PIC slide rules to their range. the plastic slide rules where introduced in the 1960s and in 1967 the company became British Thornton. The slide rule was the evelution ...

The Artstor website will be retired on Aug 1st. Open: Science Museum Group Musigraph 100', slide rule for music the... Musigraph 100', slide rule for music theory [1985-1301*] / 'Musigraph 100', slide ...

The clever dual-scale device boasts attributes such as an extendable measurement system, a measuring caliper, a magnetically retained pen, and a slide rule for performing calculations. As has been ...

Around here we mostly enjoy slide rules. We even have our own collections including some cylindrical and circular ones. But [Mathologer] discusses a recent Reddit post that explains a circular ...

I HAVE read with great interest the abstract of the paper on the invention of the slide rule, by Prof. F. Cajori, which appeared in NATURE of December 30, 1909. I agree with the author in thinking ...

You need to slide the tiles around until you get the numbers 1 to 15 in order. It is not always easy, but it can be done. The illustration above shows the final stages of a solver’s attempt to ...