Examlex
A survey that focuses on sensitive,unpopular,or illegal behavior that leads subjects to answer inaccurately is a serious threat to the validity of research results.This problem is known as:
Phosphorescence
The phenomenon of light emission by a substance without combustion or perceptible heat, persisting for some time after excitation by ultraviolet light or other forms of energy.
Alpha Particle
A type of radioactive particle consisting of two protons and two neutrons, equivalent to a helium-4 nucleus, ejected from certain radioactive nuclei.
Beta Particle
An electron or positron, characterized by its high speed and energy, released by an atomic nucleus undergoing radioactive decay.
Gamma Ray
High-energy electromagnetic radiation emitted by atomic nuclei during radioactive decay, with higher energy than X-rays.
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