TS EN ISO 80000-10

TS EN ISO 80000-10 is the part of the Quantities and units series devoted to atomic and nuclear physics. It sets out the names, symbols, definitions and units used for quantities in this field, helping technical and scientific users express the same physical idea consistently across reports, calculations and publications.

Why terminology matters in atomic and nuclear physics

Atomic and nuclear physics deals with matter at atomic scale and with processes in the nucleus. In this area, quantities such as energy, mass, activity, half-life and radiation-related measures are commonly encountered, along with particle-related quantities. By standardising terminology and symbols, the document supports clearer communication and reduces ambiguity when the same concept appears in different books, laboratories or engineering contexts.

What this part contributes

• Names and symbols for quantities used in atomic and nuclear physics.
• Definitions and units for those quantities.
• Conversion factors where appropriate.
• A consistent quantity-and-unit structure aligned with the rest of the ISO 80000 series.

This is a vocabulary-and-units standard rather than a test or method standard. Its main value lies in providing a common language for measurement expressions, calculations and technical documentation, so that the same quantity is identified and written in a consistent way.