Enzyme transporting protons across membranes.

In particle physics, proton decay is a hypothetical form of particle decay in which the proton decays into lighter subatomic particles, such as a neutral pion and a positron.

Mass of a hydrogen nucleus.

Accelerator that speeds up protons.

Attraction energy for a proton.

Device that speeds up protons.

In medicine, proton therapy, or proton radiotherapy, is a type of particle therapy that uses a beam of protons to irradiate diseased tissue, most often to treat cancer.

Measures magnetic fields using protons.