The metric system is on track for a mass makeover. In an effort to provide accurate measurements at all scales, scientists are preparing to redefine four basic units by the end of 2018. The shift will ...

In no field of science is the gulf between appreciation and importance as wide as it is for metrology. It’s not about the weather. Metrology is the science of measuring. It has a longer history than ...

The proposed changes are part of the “Draft areas of reforms for discussion” prepared by the Working Group and circulated by ...

THROUGHOUT MUCH of human history, man has been the measure of many, if not all, things. Lengths were divided up into feet, palms, spans and smaller units derived from the human hand. Other measures ...

When working with weight measurements in different contexts, students often encounter both kilograms and pounds. Whether you're reading scientific literature, following international recipes, or ...

Before measuring something, it is important to know which unit to use. Estimating its approximate size by comparing it with a more familiar object can help. In order to find a suitable unit of measure ...

IN a letter to NATURE, dated March 29, I stated that we have “no names for units of velocity, acceleration, impulse, momentum, &c.” This cannot be said now. Through the kindness of Messrs. Macmillan ...

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 ...