IB DP Physics: HL复习笔记9.1.2 Energy Changes in SHM
Energy Changes in SHM During simple harmonic motion, energy is constantly exchanged between two forms: Kinetic energy Potential energy The potential energy could be in the form of: Gravitational po...
IB DP Physics: HL复习笔记9.1.1 The Defining Equation of SHM
The Defining Equation of SHM Simple harmonic motion (SHM) is a fundamental oscillation which appears naturally in various phenomena, including: The swing of a pendulum A mass on a spring Guitar str...
IB DP Physics: HL复习笔记8.2.5 Earth's Surface–Atmosphere System
Earth's Surface–Atmosphere System It is useful to consider Earth’s energy balance in terms of how much incoming energy from the Sun is used and how much is returned to space If incoming and outgoin...
AQA A Level Maths: Pure复习笔记4.4.2 Geometric Series
Geometric Series How do I find the sum of a geometric series? A geometric series is the sum of the terms of a geometric sequence The following formulae will let you find the sum of the first...
IB DP Physics: HL复习笔记8.2.4 The Greenhouse Effect
Greenhouse Gases When radiation from the Sun hits the Earth, it is radiated back from the Earth's surface as long-wave radiation A greenhouse gas is a gas that absorbs this re-radiated radiation, t...
IB DP Physics: HL复习笔记8.2.3 The Solar Constant, Albedo & Emissivity
The Solar Constant Since life on Earth is entirely dependant on the Sun’s energy, it is useful to quantify how much of its energy reaches the top of the atmosphere This is known as the solar consta...
IB DP Physics: HL复习笔记8.2.2 Black-Body Radiation
Black-Body Radiation Black body radiation is the name given to the thermal radiation emitted by all bodies (objects) All objects, no matter what temperature, emit black body radiation in the form o...
美国名校是如何进行划分的？常春藤、公立常春藤、新常春藤区别是什么？
美国的名校，多少都有title傍身，最早我们熟悉的就是常春藤联盟（IVY League），虽说是以一个体育联盟的名义起家，但是依旧代表了美国私立教育的最高水准，很多人都以爬藤为目标。随着教育水平的提高、各个学校综...
IB DP Physics: HL复习笔记8.2.1 Conduction, Convection & Thermal Radiation
Conduction Thermal energy transfers from hotter areas to cooler areas by the processes of: Conduction Convection Radiation Objects will always lose heat until they are in thermal equilibrium (same ...
AQA A Level Maths: Pure复习笔记4.4.1 Geometric Sequences
Geometric Sequences What do I need to know about geometric sequences? In a geometric sequence, there is a common ratio between consecutive terms in the sequence You need to know the nth term...
IB DP Physics: HL复习笔记8.1.6 Safety Issues in Nuclear Power
Safety Issues in Nuclear Power Safety Measures for Workers Several measures are in place to reduce the worker’s exposure to radiation The fuel rods are handled remotely ie. by machines The nuclear ...
IB DP Physics: HL复习笔记8.1.5 Energy Generation
Energy Generation You need to know about the main ways of generating electricity: The equipment involved The advantages and disadvantages Calculate power obtained for different setups These revisio...
