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  2. Radon - Wikipedia

    en.wikipedia.org/wiki/Radon

    Radon mixed with hydrogen entered the evacuated system through siphon A; mercury is shown in black. Radon was discovered in 1899 by Ernest Rutherford and Robert B. Owens at McGill University in Montreal. [48] It was the fifth radioactive element to be discovered, after uranium, thorium, radium, and polonium.

  3. Radium and radon in the environment - Wikipedia

    en.wikipedia.org/wiki/Radium_and_radon_in_the...

    The highest levels of radon in rainwater occur during thunderstorms, and it is hypothesized that radon is concentrated in thunderstorms because it forms some positive ions during thunderstorms. [12] Estimates of the age of raindrops have been obtained from measuring the isotopic abundance of radon's short-lived decay progeny in rainwater. [13]

  4. Health effects of radon - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_radon

    Lung cancer is the only observed consequence of high concentration radon exposures; both human and animal studies indicate that the lung and respiratory system are the primary targets of radon daughter-induced toxicity. [1] Radon has a short half-life (3.8 days) and decays into other solid particulate radium-series radioactive

  5. Radon-222 - Wikipedia

    en.wikipedia.org/wiki/Radon-222

    Radon-222 (222 Rn, Rn-222, historically radium emanation or radon) is the most stable isotope of radon, with a half-life of approximately 3.8 days. It is transient in the decay chain of primordial uranium-238 and is the immediate decay product of radium-226 .

  6. AI chip startup Positron raises $23.5 million seed round to ...

    www.aol.com/news/ai-chip-startup-positron-raises...

    Positron, a startup chip maker that aims to compete with Nvidia, said Tuesday it raised $23.5 million to scale production of its U.S.-made artificial intelligence chips. Valor Equity Partners ...

  7. International Radon Project - Wikipedia

    en.wikipedia.org/wiki/International_Radon_Project

    To achieve these aims, WHO has formed a network of key partner agencies from some 40 Member States. This network is the basis for the WHO International Radon Project which was launched in 2005. Working groups will collect and analyse information on radon risk, radon policies, radon mitigation and prevention as well as risk communication.

  8. Rose Hanbury's Family Guide: Get to Know Her Husband, 3 Kids ...

    www.aol.com/entertainment/rose-hanburys-family...

    Rose Hanbury. David M. Benett/Dave Benett/Getty Images for Louis Vuitton Rose Hanbury isn’t the only member of her family with connections to the British royal family. Rose, full name Sarah Rose ...

  9. Isotopes of radon - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_radon

    Daughter isotope Spin and parity [n 4] [n 5] Isotopic abundance; Excitation energy [n 5] 193 Rn 86 107 193.009708(27) ... Radon [n 13] Radium emanation Emanation ...

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