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Terrarium. A terrarium ( pl.: terraria or terrariums) is usually a sealable glass container containing soil and plants that can be opened for maintenance to access the plants inside; however, terraria can also be open to the atmosphere. Terraria are often kept as ornamental items. A closed terrarium's transparent walls allow heat and light to ...
Terraria ( / təˈrɛəriə / ⓘ [ 1]) is a 2011 action-adventure sandbox game developed by Re-Logic. The game was first released for Windows and has since been ported to other PC and console platforms. The game features exploration, crafting, building, painting, and combat with a variety of creatures in a procedurally generated 2D world ...
A molten-salt reactor ( MSR) is a class of nuclear fission reactor in which the primary nuclear reactor coolant and/or the fuel is a mixture of molten salt with a fissile material. Two research MSRs operated in the United States in the mid-20th century. The 1950s Aircraft Reactor Experiment (ARE) was primarily motivated by the technology's ...
Thorium is a chemical element. It has the symbol Th and atomic number 90. Thorium is a weakly radioactive light silver metal which tarnishes olive gray when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a high melting point. Thorium is an electropositive actinide whose chemistry is dominated by the ...
Uranium–lead dating, abbreviated U–Pb dating, is one of the oldest [ 1] and most refined of the radiometric dating schemes. It can be used to date rocks that formed and crystallised from about 1 million years to over 4.5 billion years ago with routine precisions in the 0.1–1 percent range. [ 2][ 3] The method is usually applied to zircon.
The design of some SMR reactors is based on the thorium fuel cycle, which is considered by their promotors as a way to reduce the long-term waste radiotoxicity compared to the uranium cycle. [55] However, using the thorium cycle also presents big operational challenges because of the production and the use of 232 U and long-lived fertile 233
(Europium and ytterbium have lower melting points because they delocalise about two electrons per atom rather than three.) [23] This chemical availability of f orbitals justifies lanthanum's placement in the f-block despite its anomalous ground-state configuration [24] [25] (which is merely the result of strong interelectronic repulsion making ...
Point of Entry. Point of Entry is the seventh studio album by English heavy metal band Judas Priest, released on 27 February 1981 by Columbia Records. Following the commercial success of their previous album British Steel (1980), Priest pursued a more radio-friendly direction on Point of Entry. Following the conclusion of the British Steel Tour ...