4 天之前 · Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei. …

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by …

radioactive翻译：具有放射性的；有辐射性的。了解更多。

2024年8月12日 · Radioactivity occurs when an atom has an excess of energy, mass, or both, making its nucleus unstable. To reach a lower, more stable energy level, it releases energy in …

The Atomic Century. Before the Atomic Age: "Shadow Pictures," Radioisotopes, and the Beginnings of Human Radiation Experimentation

radioactivity翻译：放射（性）, 放射线；辐射线；辐射能。了解更多。

DOE Explains...Radioactivity. Radioactivity is the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes.Atomic nuclei consist of protons and neutrons bound …

In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays, which had been discovered in 1895 by Wilhelm Roentgen.He exposed potassium uranyl …

2019年9月6日 · Radioactivity is the spontaneous emission of radiation in the form of particles or high energy photons resulting from a nuclear reaction. It is also known as radioactive decay, …

radioactive，英语单词，形容词，意思是“[核] 放射性的；有辐射的”。