For more than a century, a single metal cylinder locked in a vault defined the kilogram — until it began to drift. Tiny changes in mass pushed scientists to rebuild the unit from pure physics instead ...

The kilogram is getting an update. No, your bathroom scales won’t suddenly become kinder and a kilo of fruit will still weigh a kilo. But the way scientists define the exact mass of a kilogram is ...

Understanding this relationship between mass and force is crucial for grasping the fundamental concepts of motion in physics. By appreciating their roles, you can delve deeper into how objects move ...

A quiet revolution could this week change the standard for weighing everything from drug doses to jumbo jet fuel. Scientists from more than 60 countries will vote on Friday on whether a lump of metal ...

Martin Scanlon receives funding from NSERC Canada. He is a member of the Board of Directors of AACCI - Cereals & Grains Association. University of Manitoba provides funding as a founding partner of ...

It’s mass for the masses. A tabletop device makes the new definition of the kilogram more accessible. Previously, the kilogram had been equal to the mass of a special metal cylinder kept in a vault ...

As of May 20, the kilogram joined a bunch of other units — second, metre, ampere, kelvin, mole and candela — that will no longer be compared with physical objects as standards of reference. The change ...

This week the kilogram got a new definition – one that rests on a quantity of light. The old kilogram was defined by a platinum cylinder kept in a vault in Paris, and at first glance, that system ...