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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. [47] It was the fifth radioactive element to be discovered, after uranium, thorium, radium, and polonium.
Argiope radon is a species of orb web spider native to Australia. [1] It is found in tropical areas of the Northern Territory, Western Australia and Queensland. [2] [3] It is commonly known as the Northern St Andrew's cross spider. [4] Like most orb-weaving spiders, males are much smaller than females.
The Federal Office for Radiation Protection has developed a radon map of Germany. [73] The EU Directive 2013/59/Euratom (Radiation Protection Basic Standards Directive) introduced reference levels and the possibility for workers to have their workplace tested for radon exposure. In Germany, it was implemented in the Radiation Protection Act ...
Of the radiological licenses monitored by ARPANSA, there are over 65,000 individual sources and 36 facilities, with many of these operated by the Australian Nuclear Science and Technology Organisation. [5] [9] The agency also aids Australian citizens by publishing daily solar ultraviolet radiation (UVR) levels for many locations in Australia. [14]
The following structures are officially considered "unconfirmed" because they are not listed in the Earth Impact Database. Due to stringent requirements regarding evidence and peer-reviewed publication, newly discovered craters or those with difficulty collecting evidence generally are known for some time before becoming listed.
Carbon dioxide, nitrogen, radon and helium bubble forth continuously. Because the Springs contain small amounts of uranium and radon, staying near the Springs for a prolonged period constitutes a health hazard. Living on the floor of the Springs is an extremophile algal mat that survives the warm temperatures of 62 °C and high radioactivity. [2]
Australia is located in the Southern Hemisphere. Relief map showing major rivers of Australia Climate of Australia. The Australian environment ranges from virtually pristine Antarctic territory and rainforests to degraded industrial areas of major cities.
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