与 «PROTOACTINIUM»相关的英语书籍
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protoactinium的用法。与
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1
Heisenberg and the Nazi Atomic Bomb Project: A Study in ...
As an example of how adept Heisenberg was at spinning a plausible tale from
scientific ambiguity, it is instructive to examine his letter's use of protoactinium as
an analogy for U235 in order to prove his full understanding of a U235 bomb.
2
Otto Hahn: Achievement and Responsibility
8.2 The Father of the Race, Protoactinium 91 the chance of smashing an atomic
nucleus in this way was "no better than the likelihood of shooting a single flea in
a large, completely dark, railway station building by blindly firing a machine gun ...
3
The Physical Chemist's Toolbox
... errors 112 Propane (C3H8) 607 obeys reduced equation of state 262 1-
Propanol (liquid) 667 2-Propanol (liquid) 667 Proper time 73 Proportional
counter (particle detector) 632 Protein 84 crystallography 752 surface 270
Protoactinium (Pa) ...
4
Determination of Metals in Natural and Treated Water
19 Pratoactinium Sill [31] has described procedures for the determination of 231-
protoactinium in water. The samples are fused first with anhydrous potassium
fluoride and then with sulphuric acid, after which protoactinium is dissolved by ...
5
Salters GCSE Science: Y11
The figures in this table show results for the decay of a sample of protoactinium.
solution containing protoactinium An experiment to measure the decay of
protoactinium using a liquid GM tube. The count rate (number of counts per
second) is a ...
6
Reviews in Food and Nutrition Toxicity
Uranium-238 decays by emitting alpha particles to become thorium-234, which
has a 24.1-d half-life; this in turn decays to form two short-lived radionuclides,
proto- actinium-234m and protoactinium-234. These three radionuclides decay
by ...
7
Russian Chemical Reviews
dieted In 1871-1872 by Mendeleev1**, who described the chief chemical
properties of the element and suggested for it the name "eka-tantalum".
Protoactinium was discovered In 1918 and In the following 40 years considerable
progress has ...
8
Nuclear Dawn: F. E. Simon and the Race for Atomic Weapons in ...
Harteck suggests that it would be “technically possible” to produce bombs with
protoactinium, and for three more pages of transcript they explore this alternative
in depth. Towards the end, Heisenberg remarks: “Perhaps the others [in ...
protoactinium Element symbol, Pa; actinide; Z 91; A(r) 231.04; density (at 20°C),
15.37 g/cm3; m.p., 1,200°C; name derived from the Greek word protos, “first,” and
actinium; discovered 1917. proton One of the basic particles in the atom, found ...
Diagram Group Staff,
2009
10
Nuclear Dawn: F. E. Simon and the Race for Atomic Weapons in ...
Harteck suggests that it would be “technically possible” to produce bombs with
protoactinium, and for three more pages of transcript they explore this alternative
in depth. Towards the end, Heisenberg remarks: “Perhaps the others [in ...
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Worse than Chernobyl: The inner threat of Fukushima crisis
... Antimony-125, Iodine-131, Xenon-133, Caesium-137, Caesium-134, Cerium-144 (loads of this), Protoactinium-147, Europium-154, Plutonium-238, 239, 240, ... «RT, 八月 13»
Peculiar protactinium
This gave their suggested name, protoactinium (which later evolved in the simpler protactinium), the edge over Fajans' brevium. © SHUTTERSTOCKPHOTO. «Nature.com, 七月 12»