Unit Conversions for Energy & Mass Units of Energy The electronvolt is a unit of energy It is equivalent to the amount of energy transferred to an electron accelerated across a potential differ...
Annihilation of Matter & Antimatter Annihilation When a particle meets its antiparticle partner, the two will annihilate Annihilation is: When a particle meets its equivalent anti–particle they...
High Energy Particle Collisions The Diameter of a Nucleon High energy electron beams can be used to analyse nucleons, e.g. Protons Neutrons When electrons are accelerated to very high energies, the...
IB课程，是国际文凭组织IBO为全球学生开设的从幼儿园到大学预科的课程；为全世界 3-19岁 的学生提供智力、情感、个人发展、社会技能等方面的教育；以国际化的视野，培养全面发展的人才。上海开设IB课程的国际学校...
Interpreting Particle Tracks Particle detectors that count particles, like Geiger-Muller tubes, are useful but they cannot distinguish different types of particle Modern detectors can show the path...
Radius of a Charged Particle in a Magnetic Field A charged particle in uniform magnetic field which is perpendicular to its direction of motion travels in a circular path This is because the magnet...
对于2023年的AP考试，让很多考生纠结。首先大陆AP考试报名已经于9月19日开始，但是仅限AP学校的考生报名，还有大量的社会考生无法参与报名，同时，大陆考场也有部分科目（比如历史类）不能考，这两类学生都比较期...
Particle Accelerators & Detectors Linear Accelerators A linear accelerator (LINAC) is a type of particle accelerator that accelerates ions (charged particles) to very high speeds in straight li...
Thermionic Emission When metals are heated, the conduction electrons within them gain energy If these electrons gain sufficient energy, they are able to leave the surface of the metal This is known...
