If scientists had sacred objects, this would be one of them: a single, closely guarded 137-year-old cylinder of metal, housed in a vault outside of Paris. It is a prototype that precisely defines a ...

Over the past year or so ever more patent data has been made publicly available thanks to Google. In collaboration with the USPTO Google is scraping information from the USPTO servers, transferring ...

You can change the ruler unit from inches to centimeters, millimeters, points, and Picas. Points are used when you need to simulate pixels, while Picas are typically used to represent fixed horizontal ...

Every measurement we make, be it for length, time, temperature, or electric current, needs a standard unit so that results ...

When someone tells you they'll be "back in two shakes!" they are guaranteed to take much, much longer than that — at least if we're talking shakes in the sense used by physicists. The shake is a unit ...

The sunflower is 214 cm tall. Calculate the height of the sunflower in metres and millimetres. There are 100 centimetres in a metre. Metres are larger than centimetres so the number of centimetres ...