AQA A Level Physics复习笔记8.1.1 Rutherford Scattering
Rutherford Scattering Evidence for the structure of the atom was discovered by Ernest Rutherford in the beginning of the 20th century from the study of α-particle scattering The experimental...
AQA A Level Physics复习笔记7.10.5 Transformer Inefficiencies
Inefficiencies in a Transformer Inefficiencies in a transformer appear not from just the core, but also in the wires The coils of wire have resistance This causes heat energy to be lost from...
2022 SIC S7全球站秋季赛-时间安排-环节设置
SIC S7全球站 今晚截止报名！ 截止时间：7月11日 23:59 晋级的同学们可不要错过时间啦！ SIC S7全球站 全球站参与者将从宏观经济、行业竞争、企业估值、风险管理等角度向金融大咖展示自己对所选股票的独特解读。 ...
AQA A Level Physics复习笔记7.10.4 Transformer Efficiency
Transformer Efficiency In reality, transformers are not 100% energy efficient This means their power output is less than the power input For an ideal (100% efficient) transformer, the...
AQA A Level Physics复习笔记7.10.3 The Operation of a Transformer
The Transformer Equation A transformer is A device that changes high alternating voltage at low current to low alternating voltage at high current, and vice versa This is designed to reduce ...
AQA A Level Physics复习笔记7.10.2 The Operation of an Oscilloscope
Oscilloscope as a DC & AC Voltmeter A Cathode-Ray Oscilloscope (CRO) is a laboratory instrument used to display, measure and analyse waveforms of electrical circuits It can therefore be used as...
AQA A Level Physics复习笔记7.10.1 Alternating Current & Voltage
Sinusoidal & Root-Mean-Square Current & Voltage An alternating current (a.c) is defined as: A current which periodically varies between a positive to a negative value with time This ...
IB DP Maths: AA HL复习笔记4.6.1 The Normal Distribution
What is a continuous random variable? A continuous random variable (often abbreviated to CRV) is a random variable that can take any value within a range of infinite values Continuous random variab...
美国顶尖大学学费又涨价了！两所美国顶尖院校宣布向国际生实行Need-Blind招生政策
随着美国疫情的常态化，有些院校不光恢复了线下教学，还涨了学费。相信大家前段时间都听说了：美国顶尖大学的学费又涨了！ 据悉，美国排名前30的大学中有27所正在提高下一学年的学杂费。而自2019-2020学年以来，...
