radioactivity
Astronomy Cast Ep. 373: Becquerel Experiment (Radiation)
Antoine Henri Becquerel discovered radioactivity completely by accident when he exposed a chunk of uranium to a photographic plate. This…
What is Beta Radiation?
Beta radiation is radiation due to beta particles, which are electrons (or, sometimes, positrons); mostly, when you come across the…
Beta Particles
Beta particles are electrons (symbol β-), or positrons (symbol β+), emitted in beta decay (a kind of radioactivity); beta radiation…
Beta Decay
[/caption] Beta decay is when an unstable atomic nucleus decays (radioactively) by emitting a beta particle; when the beta particle…
What is Alpha Radiation?
Alpha radiation is another name for the alpha particles emitted in the type of radioactive decay called alpha decay. Alpha…
Radioactive Hot Spots on Earth’s Beaches May Have Sparked Life
We've heard about life being created in a puddle of primordial chemical soup, sparked by lightning strikes, or organic molecules…