IN Sky and Telescope of September, under the heading “Saluting an Astronomer”, Joseph R. Habes has an article which describes the method adopted by Eratosthenes for measuring the circumference of the ...

In today’s age, “How far is the stream?” is an oft-repeated query that trekking and hiking groups brace themselves for from the newbies, before breaking into a wry smile. They then recount an amusing ...

The waist-to-hip ratio (WHR) measures the ratio of your waist circumference to your hip circumference. It can help determine how much fat is stored on your waist, hips, and buttocks. The waist-to-hip ...

Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...

随着软件规模和复杂性的增加，良好的程序结构和模块化设计变得至关重要。Fortran作为一种古老而强大的编程语言，在现代化开发中仍然可以通过模块化编程来提高代码的可维护性和重用性。本文将介绍Fortran中的模块化编程概念、模块的定义和使用方法，以及 ...

A simple web-based calculator that computes the circumference of a circle given its radius. Designed with a clean user interface and easy-to-use features.

The radius of a circle or a sphere is the distance between the center and the edge. The radius can be used to calculate a circle's diameter, area and circumference. Likewise, a sphere's volume is ...

Put the tape measure at the top of your hip bone, then bring it all the way around your body, level with your belly button. Make sure it's not too tight and that it's straight, even at the back. Don't ...

The famous mathematical ratio, estimated to more than 22 trillion digits (and counting), is the perfect symbol for our species’ long effort to tame infinity. By Steven Strogatz This article, ...