The isotopic ratio of sulfur-33 on the moon differs from that of Earth. Did the moon's sulfur instead come from the impactor ...

Scientists may have finally uncovered the mystery behind ultra-high-energy cosmic rays — the most powerful particles known in ...

Discover the physics behind stamps sticking to envelopes, from fundamental forces to Van der Waals interactions, explained concisely.

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 ...

The biological study of species offers no equivalent to such transmutation. An individual which belongs to a given species will always belong to that species, come what may. And assigning an ...

Low nitrogen availability is the number one limitation to plant growth in most ecosystems. Plants in the bean family and other closely related families evolved a symbiotic relationship with bacteria ...

Atoms are the basic building blocks of matter, and understanding their composition is a fundamental aspect of chemistry and physics. One of the most crucial aspects of an atom is understanding the ...

For example, the atomic number of chlorine is 17. Every chlorine atom has 17 protons and 17 electrons. It has 17 positive charges and 17 negative charges, meaning that it is neutral overall. Atoms of ...

The Q-matrix serves as a bridge that links items and attributes, and its accuracy affects the results of cognitive diagnosis. Inaccuracy of the Q-matrix are a common issue frequently encountered in ...

For the first time, by studying quantum correlations between triplets of secondary particles created during high-energy ...

The weak nuclear force doesn't play by the normal rules — and, in fact, it breaks one of the biggest rules of all.