This segment from Swift: Eyes through Time traces the history military officers and engineers discovering a strange phenomenon in the sky that astronomers now know are gamma-ray bursts.
The RHESSI instrument not only views the Sun but can detect gamma-rays from sources on Earth as well.
This film examines exposures to gamma rays that are emitted from the nuclei of certain radioactive atoms. Major topics include health effects, exposures, and protective measures. Other educational concepts include external radiation hazard, internal radiation hazard, external radiation hazard, and shielding. This instructional film is from Kansas State University's web-based course, GENAG 711, Occupational and Agricultural Health. Copyright 2011, Mitch Ricketts.
This film examines the process of radioactive decay as part of an educational unit on the health effects of ionizing radiation (radioactivity). Educational concepts include radioisotope, radioactive decay, alpha radiation, beta radiation, gamma radiation, x-radiation, decay chain, and half-life. This instructional film is from Kansas State University's web-based course, GENAG 711, Occupational and Agricultural Health. Copyright 2011, Mitch Ricketts.
This film explores the health effects of ionizing radiation (radioactivity). The film also examines methods for reducing exposures to radiation in workplaces. Educational concepts include ionizing radiation, radiation sickness, radiation burns, other health effects, ion pairs, free radicals, penetration versus interaction, and time/distance/shielding. This instructional film is from Kansas State University's web-based course, GENAG 711, Occupational and Agricultural Health. Copyright 2011, Mitch Ricketts
This educational brief provides an overview of how previously unrevealed information about our galaxy and other celestial objects can be obtained by examining their energy emissions in parts of the electromagnetic spectrum other than that visible to the human eye. Remote imagery of the Milky way in several wavelengths is included, and links to additional information are embedded in the text.
The solar flare at Active Region 10039 on July 23, 2002 exhibits many exceptional high-energy phenomena including the 2.223 MeV neutron capture line and the 511 keV electron-positron (antimatter) annihilation line. In the animation, the RHESSI low-energy channels (12-25 keV) are represented in red and appears predominantly in coronal loops. The high-energy flux appears as blue at the footpoints of the coronal loops. Violet is used to indicate the location and relative intensity of the 2.2MeV emission.
