Kilogram reinvented from today: Scientists formally change the definition (page 2)

On Monday, May 20th, Professor and Nobel Laureate Wolfgang Ketterle will explain the new standards of measurement for mass, charge, temperature and mole. It promises to be a weighty moment: On Monday, May 20th (World Metrology Day) the definition for the kilogram, the base unit of mass, will change. You might not notice it when weighing fruits and vegetables at the grocery store, but the new definition could have positive implications for areas where extremely precise measurements are required, such as with the use of nanodevices, when concocting the correct dose of compounds used in a medicine, or when calculating the weight of a newly discovered subatomic particle. On Monday, May 20th at 4:00 p.m., Professor Wolfgang Ketterle, the 2001 Nobel Laureate in Physics, will present a special lecture exploring the new standards of measurement and why this is such a historic shift for scientists around the world. Ketterle will delve into how for the first time ever, the definition for the kilogram - as well as the

Kilogram reinvented from today: Scientists formally change the definition

Previously, Le Grand K was defining mass against which kilos were measured. Instead, scientists will measure the kilogram via the Kibble balance

Mon 20 May 19 from Daily Mail

On May 20th, the kilogram will no longer be defined by a lump in France

On May 20th, World Metrology Day, the scientific community will officially change the definition of the kilogram. For 130 years, the kilo has been defined by a physical cylinder of ...

Fri 17 May 19 from Engadget

Adieu, Le Grand K: The kilogram to be redefined for the first time in 130 years

The International Bureau of Weights and Measures has new definitions of four basic units of measurement: the kilogram, kelvin, mole and ampere.

Fri 17 May 19 from L.A. Times

Kilogram to be based on physical absolute instead of single, physical object

The kilogram is no longer defined by a physical object. Instead, from here on out, the unit of measurement will be based on fundamental constants, atomic properties and physical absolutes.

Mon 20 May 19 from UPI

New definition of the kilogram comes into force

The kilogram and three other base units of the International System of Units are set to be defined in terms of physical constants The post New definition of the kilogram comes into force appeared ...

Fri 17 May 19 from Physicsworld Blog

Original kilogram replaced -- new International System of Units (SI) entered into force

In addition to other scientific units, the kilogram also is now defined by a natural constant. This is made possible by single crystals grown from highly enriched silicon-28.

Tue 21 May 19 from ScienceDaily

Original kilogram replaced -- new International System of Units (SI) entered into force, Tue 21 May 19 from Eurekalert

India adopts new standards for measuring units kilogram, kelvin, mole & ampere

The purpose of a system units is to enable worldwide coherence of measurements.

Mon 20 May 19 from The Hindu

How the new kilogram measures up

On Monday, May 20th, Professor and Nobel Laureate Wolfgang Ketterle will explain the new standards of measurement for mass, charge, temperature and mole. It promises to be a weighty moment: ...

Tue 14 May 19 from AlphaGalileo

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