One-gigaelectronvolt cosmic-ray proton
A one-gigaelectronvolt cosmic-ray proton is a hydrogen nucleus travelling through space with a kinetic energy of 1 GeV.
Also known as: 1 GeV proton
How big is it?
1.602 × 10⁻¹⁰ J of energy
Energy per proton · exact conversion
A little perspective
About 56.8 times the released energy per reaction of Deuterium–tritium fusion reaction energy.
Deuterium–tritium fusion reaction energy: Deuterium–tritium fusion reaction energy is the amount of energy released when a deuterium nucleus fuses with a tritium nucleus, producing a neutron and an alpha particle.
Measurements, assumptions & sources +
One-gigaelectronvolt cosmic-ray proton
A proton energy of exactly 1 GeV converts to 1.602176634 × 10⁻¹⁰ J using the exact SI electronvolt conversion. “Cosmic ray” describes the particle context, not an additional energy uncertainty.
NIST — 2022 CODATA fundamental constants
The marked energy per proton is calibrated. Unmeasured illustration details are representative.
Deuterium–tritium fusion reaction energy
One D–T fusion reaction releases about 17.6 MeV, or 2.82 × 10⁻¹² J, shared mainly by a neutron and an alpha particle. This is per reaction, not reactor output.
IAEA — Deuterium–tritium fusion
The marked released energy per reaction is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 1.602 × 10⁻¹⁰ J
For comparison, this page uses energy per proton. The record labels this value exact conversion, so the stated convention rather than an inferred average controls the comparison.
A proton energy of exactly 1 GeV converts to 1.602176634 × 10⁻¹⁰ J using the exact SI electronvolt conversion. “Cosmic ray” describes the particle context, not an additional energy uncertainty.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
One-gigaelectronvolt cosmic-ray proton dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 1.602 × 10⁻¹⁰ J | Not recorded | exact conversion |
Around this scale
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These links use compatible energy records, ordered around the selected value.
Nearest lower value · EnergyDeuterium–tritium fusion reaction energy2.82 × 10⁻¹² JDeuterium–tritium fusion reaction energy is the amount of energy released when a deuterium nucleus fuses with a tritium nucleus, producing a neutron and an alpha particle.Nearest higher value · EnergyLarge Hadron Collider proton energy1.1 × 10⁻⁶ JLarge Hadron Collider proton energy is the kinetic energy carried by a single proton accelerated in the LHC.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- NIST — 2022 CODATA fundamental constantsRecommended constants with uncertainties; exact SI definitions are distinguished from measured constants.
There’s always another scale
Follow your curiosity.
EnergyLarge Hadron Collider proton energy1.1 × 10⁻⁶ JLarge Hadron Collider proton energy is the kinetic energy carried by a single proton accelerated in the LHC.EnergyVisible photon2.247 eVA visible photon is a single particle of light within the range detectable by the human eye.EnergyDeuterium–tritium fusion reaction energy2.82 × 10⁻¹² JDeuterium–tritium fusion reaction energy is the amount of energy released when a deuterium nucleus fuses with a tritium nucleus, producing a neutron and an alpha particle.
EnergyHydrogen atom ground-state binding energy13.61 eVHydrogen atom ground-state binding energy is the energy needed to remove the electron from a hydrogen atom in its lowest energy state.Fundamental physicsStrontium-87 optical clock transition1.779 eVThe strontium-87 optical clock transition is an energy change between two quantum states of strontium atoms that can set the timing of an optical atomic clock.EnergyGreen photon energy2.253 eVGreen photon energy is the energy carried by a single photon of green light, determined by its wavelength and fundamental physical constants.
PowerSingle-mode laser pointer optical output5 mWSingle-mode laser pointer optical output is the continuous visible light power emitted by a standard handheld laser pointer operating in a single spatial mode.
EnergyLift an apple one metre1.765 JLifting an apple one metre is the work needed to raise a small object against Earth's gravity over that distance.