The subatomic world breaks the rules of being a thing

Science · Published 24 October 2026 Swipe more like this →

In short: In our daily lives, things are either objects you can hold or ripples that pass through your hand. But at the subatomic level, this distinction collapses. Electrons and photons refuse to choose a side, existing in a state of duality that challenges our most basic logic about reality.

The confusion stems from how we define matter. In classical physics, particles are localized—objects like bullets or cars with specific positions and momentum. Waves, conversely, are oscillations that transport energy without being 'somewhere' specific; they can interfere constructively to double in size or destructively to cancel out entirely. However, quantum mechanics reveals that subatomic objects do not fit into these neat boxes. They are not just particles doing a wave-like motion; they are fundamentally both simultaneously.

This duality was formalized by Louis de Broglie, who combined Max Planck’s and Albert Einstein’s equations to show that mass is essentially equal to frequency (M = f). He derived the de Broglie wavelength, which suggests every object has a wavelength determined by its momentum. While an electron in a hydrogen atom has a measurable wavelength of 3.3 x 10^-10 meters, a basketball's wavelength is roughly 10^-34 meters—so small that it is effectively unmeasurable. This explains why large objects like sand grains or humans don't appear to 'smear' across space; their wave nature is simply too tiny to notice.

The mystery deepens with the measurement problem. In experiments like the double-slit test, individual photons behave as waves until they are measured, at which point they act like particles. Instead of a definite position, quantum mechanics uses the Schrödinger equation to solve for a 'wave function' (psi). This mathematical expression represents probability density—the likelihood of finding a particle in a specific spot. We cannot say where an electron is; we can only calculate the probability of its presence, leaving us with a universe that remains fundamentally smeared until we look at it.

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