AQA A Level Physics复习笔记8.4.5 Induced Fission
Induced Fission Induced nuclear fission occurs: When a stable nucleus splits into small nuclei from the bombardment of a slow-moving neutron For example, when a uranium-235 nucleus absorbs a...
AQA A Level Physics复习笔记8.4.4 Binding Energy
Binding Energy per Nucleon Graph In order to compare nuclear stability, it is more useful to look at the binding energy per nucleon The binding energy per nucleon is defined as: The binding ...
AQA A Level Physics复习笔记8.4.3 Nuclear Fusion & Fission
Nuclear Fusion & Fission Nuclear Fusion Fusion is defined as: The fusing together of two small nuclei to produce a larger nucleus Low mass nuclei (such as hydrogen and helium) can underg...
AQA A Level Physics复习笔记8.4.2 Mass Difference & Binding Energy
Mass Difference & Binding Energy Experiments into nuclear structure have found that the total mass of a nucleus is less than the sum of the masses of its constituent nucleons This differ...
AQA A Level Physics复习笔记8.4.1 Energy & Mass Equivalence
Energy & Mass Equivalence Einstein showed in his theory of relativity that matter can be considered a form of energy and hence, he proposed: Mass can be converted into energy Energy can ...
AQA A Level Physics复习笔记8.3.7 Nuclear Density
Constant Density of Nuclear Material Assuming that the nucleus is spherical, its volume is equal to: Where R is the nuclear radius, which is related to mass number, A, by the equation: Where...
Alevel生物学科必读书单！
最近，非常多同学学习Alevel生物。而生物作为一个探究人生奥秘的热门学科，却似乎因为专业性强，门槛高将同学们拒之于外。相信同学们都幻想过，忽然有一天学习生物变得有趣又令人着迷，再也不会枯燥了。这种想法...
AQA A Level Physics复习笔记8.3.6 Nuclear Radius Equation
Nuclear Radius Values The radius of some nuclei are shown in the table below: In general, nuclear radii are of the order 10–15 m or 1 fm The nuclear radius, R, varies with nucleon number, A ...
AQA A Level Physics复习笔记8.3.5 Closest Approach Estimate
Closest Approach Estimate The Coulomb equation can be used to give an estimate for the radius of a nucleus When the alpha particle reaches its closest approach (to the nucleus), all of its k...
