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  1. Imagine Dragons - Radioactive (Lyrics) - YouTube

    Imagine Dragons Best Songs Playlist || Greatest Hits Full Album 2025🔥 Believer, Thunder, Radioactive

  2. Radiation - Wikipedia

    If the source of the ionizing radiation is a radioactive material or a nuclear process such as fission or fusion, there is particle radiation to consider. Particle radiation is subatomic particles accelerated to …

  3. Radioactivity | Definition, Types, Applications, & Facts ...

    Dec 6, 2025 · 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.

  4. RADIOACTIVE Definition & Meaning - Merriam-Webster

    Dec 4, 2016 · The meaning of RADIOACTIVE is of, caused by, or exhibiting radioactivity. How to use radioactive in a sentence.

  5. What Is Radioactivity? - Energy.gov

    As its name implies, radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it "wants" to give up some energy in order to shift …

  6. Radioactivity and the Types of Radioactive Decay

    May 30, 2021 · Radioactivity is the spontaneous emission of ionizing radiation from nuclear decay and reactions. The three main types of radioactive decay are alpha, beta, and gamma decay, but there …

  7. RADIOACTIVE | English meaning - Cambridge Dictionary

    RADIOACTIVE definition: 1. having or producing powerful and dangerous energy that comes from the breaking up of atoms: 2…. Learn more.

  8. Radiation Basics | Nuclear Regulatory Commission

    As previously indicated, large unstable atoms become more stable by emitting radiation to get rid of excess atomic energy (radioactivity). This radiation can be emitted in the form of positively charged …

  9. Radioactivity: Definition, Types, Formula, and Applications

    Jun 10, 2025 · 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 form of …

  10. The Science Behind Radioactive Elements

    May 1, 2025 · These unstable atoms release excess energy in the form of radiation — a process called radioactive decay. As atoms decay, they turn into different elements or isotopes in their attempt to …