Examlex
Wearing a tie less or not at all because you were teased and laughed at when you wore it illustrates
Half-life
The time required for half the atoms of a radioactive substance to decay into a stable form.
Cesium-137
A radioactive isotope of cesium with a half-life of about 30.17 years, commonly used in medical applications and industrial gauges.
Gamma Ray Emission
A type of radioactive decay where an unstable nucleus emits a gamma ray to become more stable.
Beta Particle Emission
A radioactive decay process where an unstable atomic nucleus emits a beta particle, which is a high-speed electron or positron, as part of the transformation to a stable state.
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