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protons

  • plural
    of proton.
    proton
    noun
    a positively charged elementary particle that is a fundamental constituent of all atomic nuclei. It is the lightest and most stable baryon, having a charge equal in magnitude to that of the electron, a spin of ½, and a mass of 1.673 × 10 -27 kg. P

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In this process, a photon beam strikes protons held inside a fixed target.

From Science Daily ● Sep. 2, 2026

Millions of these photons strike protons inside a liquid hydrogen target every second.

From Science Daily ● Sep. 2, 2026

During that period, temperatures were so extreme that protons and neutrons had not yet formed.

From Science Daily ● Aug. 23, 2026

But real protons are much more complicated than that simplified model suggests.

From Science Daily ● Aug. 16, 2026

“As the galvanometer spot swung across the scale, indicating that protons of 1-MeV energy were reaching the collector,” Livingston recalled, “Lawrence literally danced around the room with glee.”

From "Big Science" by Michael Hiltzik

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