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Physics

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Gauging Multi-Kilowatt Laser Power with the Pressure of Light

January 24, 2017

A multi-kilowatt laser beam can cut through steel and melt bricks into glass. Many industries use high-power lasers like these to precisely cut and weld metals

Wearable ‘Watches’ to Monitor Your Blood Pressure

January 24, 2017

What if there were a wearable fitness device that could monitor your blood pressure continuously, 24 hours a day? Unfortunately, blood pressure (BP)

School building with overlay of units and constants

Heads Up, High School Class of '19: New Measurement Unit Definitions Are Coming

January 23, 2017

Next year, scientists expect to change the way we define the basic units with which we measure our universe. An article by scientists at the National Institute

Calibrating the Calibrator: The National Standard Neutron Source

January 17, 2017

Neutron detectors and sources play critical roles in national defense, homeland security, nuclear power plant control, radiation medicine, petroleum exploration

NIST Physicists ‘Squeeze’ Light to Cool Microscopic Drum Below Quantum Limit

January 11, 2017

Physicists at the National Institute of Standards and Technology (NIST) have cooled a mechanical object to a temperature lower than previously thought possible

Illustration of strontium lattice atomic clock

JILA Atomic Clock Mimics Long-sought Synthetic Magnetic State in Solids

December 21, 2016

Using their advanced atomic clock to mimic other desirable quantum systems, JILA physicists have caused atoms in a gas to behave as if they possess unusual

In Search of ‘Sterile’ Neutrinos

December 9, 2016

Lately, neutrinos – the tiny, nearly massless particles that many scientists study to better understand the fundamental workings of the universe – have been

Keeping a Sharp Eye on the Environment from Space

December 7, 2016

On Nov. 19, 2016, America’s most advanced weather satellite rocketed into orbit carrying six new, state-of-the-art instruments, dramatically enhanced

Man standing behind big silver equipment

Disseminating the New Kilogram: An International ‘Dry Run’

November 28, 2016

When the kilogram, the world’s basic unit of mass, gets a new definition in 2018, it will be based not on a physical artifact but a constant of nature. However

NIST Debuts Dual Atomic Clock — and a New Stability Record

November 28, 2016

What could be better than a world-leading atomic clock? Two clocks in one. Physicists at the National Institute of Standards and Technology (NIST) have combined

Universe’s Constants Now Known with Sufficient Certainty to Completely Redefine the International System of Units

November 22, 2016

Fundamental constants are physical quantities that are universal in nature. For example, the speed of light in vacuum and the charge of a single electron are

Big G Redux: Solving the Mystery of a Perplexing Result

November 16, 2016

If you spend time in physics research circles, you may have heard of the big G controversy. The universal constant of gravitation, G – affectionately known as

Seeing Light’s Effect on Atoms — Within Picoseconds

November 16, 2016

For the first time in a laboratory setting, NIST scientists have made stop-action x-ray measurements of the way visible light interacts with atoms and molecules

Noise, Temperature, and the New SI

November 15, 2016

NIST has recently made substantial improvements to its Johnson-noise thermometry system, which is playing a vital role in the worldwide effort to determine the

This artist’s conception imagines the proposed ring of atoms as cars on a beltway.

Atomic Beltway Could Solve Problems of Cosmic Gravity

November 14, 2016

When is a traffic jam not a traffic jam? When it's a quantum traffic jam, of course. Only in quantum physics can traffic be standing still and moving at the

National Aviation History Month: Earth Inductor Compass

November 9, 2016

In 1922 NIST physicists Lyman Briggs and Paul Heyl were awarded the Magellan Medal from the American Philosophical Society for their model of an Earth Inductor

JILA Team Spots Elusive Intermediate Compound in Atmospheric Chemistry

October 27, 2016

BOULDER, Colo.-- JILA physicists and colleagues have identified a long-missing piece in the puzzle of exactly how fossil fuel combustion contributes to air

Move Over, Lasers: Scientists Can Now Create Holograms from Neutrons, Too

October 20, 2016

For the first time, a team including scientists from the National Institute of Standards and Technology (NIST) have used neutron beams to create holograms of

Screenshot of an animation of a superradiant laser

JILA’s Superradiant Laser May One Day Boost Atomic Clocks and ‘Rulers’ for Space

October 14, 2016

BOULDER, Colo. – JILA physicists have demonstrated a novel laser design based on synchronized emissions of light from the same type of atoms used in advanced

Supported by Granite, New SURF Beamline Is Real Heavyweight

September 21, 2016

If your work involves sensing, measuring or using ultraviolet light, the National Institute of Standards and Technology (NIST) has great news for you: Granite

Prominent NIST and JILA Physicist Deborah Jin Passes Away

September 19, 2016

Physicist Deborah Jin, a world leader in exotic states of matter called ultracold quantum gases, passed away September 15, 2016, from cancer. She was 47 years

NIST Patents Single-Photon Detector for Potential Encryption and Sensing Apps

September 15, 2016

Individual photons of light now can be detected far more efficiently using a device patented by a team including the National Institute of Standards and

NIST and Navy Tests Suggest Telecom Networks Could Back Up GPS Time Signals

September 8, 2016

Precision time signals sent through the Global Positioning System (GPS) synchronize cellphone calls, time-stamp financial transactions, and support safe travel

Crystal Unclear: Why Might This Uncanny Crystal Change Laser Design?

August 26, 2016

Laser applications may benefit from crystal research by scientists at the National Institute of Standards and Technology (NIST) and China's Shandong University

Harmful Algal Blooms in Their True Colors

August 26, 2016

Explosive growth of cyanobacteria, also called blue-green algae, is nothing new. In fact, such cyanobacteria probably produced the original oxygen in Earth's

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