In Shedding Light on Nuclear Radiation Episode 4: Beta-Plus Decay, we introduce students to beta-plus particles, also known as positrons. Beta-plus particles are a form of anti-matter. Though beta-plus particles don't really exist in huge quantities naturally on Earth, scientists have learned how to actually make atoms that emit them! Beta-plus particles have now become a major tool for doctors to diagnose a wide variety of cancers.

Originally released by Liacos Educational Media, 2023. Streaming video file encoded with permission for digital streaming by Infobase on February 24, 2023.