Can We Actually See an Atom? Visualizing Subatomic Structure and Electron Clouds
By Alexander Ross
Every physical object, from the screen displaying these words to the iron running through your bloodstream, consists of atoms. At the baseline of physics, an atom is the smallest unit of an element that retains the chemical properties of that element.
Strip away the empty space, and the anatomy breaks down into three distinct subatomic particles:
The center houses the atomic nucleus, discovered by Ernest Rutherford in 1911 when he bounced alpha particles off thin gold foil and found a tiny fraction ricocheting backward. Occupying less than one-trillionth of the atom's total volume, the nucleus contains virtually all of its mass. It holds positively charged protons and electrically neutral neutrons, bound together by the strong nuclear force, the most potent interaction in physics.
Identity is determined entirely by numbers. The count of protons dictates the atomic number, which assigns an element its position on the periodic table. Hydrogen possesses one proton; gold possesses 79. The total sum of protons and neutrons yields the atomic mass. Change the neutron count, and you produce isotopes: chemically identical variants with different weights, some stable and others radioactive.
Circling this core are electrons, carrying negative charges equal in magnitude to the proton's positive charge but weighing just 1/1,836th of a proton. In a neutral atom, protons and electrons match in equal numbers. The electromagnetic tension between them holds the system together, preventing the negative charges from flying outward while quantum mechanical rules bar them from collapsing inward.
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
