The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of star stuff.--Carl Sagan Almost all ...
In the course of observations of the neutrons produced by the bombardment of elements with accelerated heavy hydrogen ions, we have noticed repeatedly the production of remarkably strong ionising ...
Measurements on neutron-rich nuclei help to refine models of how heavy elements came into existence Models for how heavy elements are produced within stars have become more accurate thanks to ...
Richard Feynman, a famous theoretical physicist who won the Nobel Prize, said that if he could pass on only one piece of scientific information to future generations, it would be that all things are ...
What is neutron crystallography and how does it differ from X-ray crystallography? Neutron crystallography allows us to determine the three-dimensional structures of biological macromolecules, such as ...
The periodic table contains a wide array of elements, numbered from one (hydrogen) to 118 (oganesson), with each number representing the number of protons stored within an atom's nucleus. Scientists ...
An element's atomic number defines it. An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons. So ...
Before you submit an error, please consult our Video Help page. Science Trek is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results