News

The Universe’s Gold May Come From a Totally Unexpected Kind of Star
You might owe that gold necklace around your neck to a moody, long-dead star from the universe’s ancient past. According to a ...
ZME Science on MSN1d
This New Atomic Clock Is So Precise It Won’t Lose a Second for 140 Million Years
On a campus in Boulder, Colorado, time just became a little more exact. Inside the National Institute of Standards and ...
BBC2y
Elements, compounds and mixtures
Iron is an element. It is made of only one type of atom: iron atoms. Sulfur is another element. It contains only sulfur atoms, and nothing else, so it is pure. When we mix two different pure ...
PBS9y
Rutherford and Bohr describe atomic structure
Atoms with less than the maximum number in their outer shells are less stable than those with "full" outer shells. Elements that have the same number of electrons in their outermost shells appear ...
New atomic fountain clock joins elite group that keeps the world on time
Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards ...
Many stable atoms have ‘magic numbers’ of protons and neutrons − 75 years ago, 2 physicists discovered their special properties
In Bohr’s model, if an electron orbit is not already filled, then it’s easier for the atoms to exchange or share those ...
Nanowerk5d
Gold triggers a simple way to make multi-element nanoparticles for catalysis
A new method uses gold to assemble multi-element nanoparticles under mild conditions, offering improvements in catalytic ...
Science for All: Using cold atoms in space to weigh the Himalayas
In this week’s Science for All, Vasudevan Mukunth explains how ultra-cold atoms and lasers in space can measure how much the ...