In this lesson, students will investigate the nature of radioactivity and the effect of both distance and shielding materials on different radioactive sources using a Geiger-Muller tube with a counter ...

Positively charged particles and free electrons are left behind after the collisions. Devices that are used to detect radioactivity are based on the ionizing ability of radiation. One such device is ...

The IAEA's Marine Radioactivity Information System (MARIS) allows free access to users to search and download the results of measurements of radioactivity in seawater, biota, sediment and suspended ...

This publication provides information on the implementation of quality assurance and quality control programmes for the measurement of radioactivity related to the practice of nuclear medicine. It is ...

All types of radiation become less intense as they travel further away from the radioactive material. This is because the particles or rays become more spread out. The thicker the substance, the ...

Her groundbreaking work in radioactivity laid the foundation for numerous advancements in science and medicine. This blog post explores the life and legacy of Marie Curie, highlighting her ...

Isotopes are forms of an element that have the same number of protons but different numbers of neutrons. There are three isotopes of hydrogen: hydrogen, deuterium (hydrogen-2) and tritium ...

He had a Geiger counter nearby to measure radioactivity. When he was finished, he took the polonium away, but something strange happened. The Geiger counter kept clicking, sensing radioactivity.

They called it the shed, though it was more of a dilapidated hangar. A former anatomy theater, it housed old pinewood tables, a cast-iron stove and a blackboard—all under a high ceiling that leaked.

The film, titled “Notre ami l'atome--Un siecle de radioactivite” (Our friend the atom--A century of radioactivity), traces the history of radioactive exposure, spanning more than a century ...

During inspection of incoming travelers, customs officers at Kunming Changshui International Airport detected a passenger triggering a nuclear radiation alarm. The officers quickly identified the ...