Refraction & Refractive Index Refraction occurs when light passes a boundary between two different transparent media At the boundary, the rays of light undergo a?change in direction?and?a chang...
Equation for the Intensity of Radiation Progressive waves transfer?energy The amount of energy passing through a unit area per unit time is the?intensity?of the wave Therefore, the?intensity?is def...
Core Practical 7: Investigating Stationary Waves Aims of the Experiment The overall aim of the experiment is to measure how the frequency of the first harmonic is affected by changing one of the fo...
Wave Speed on a Stretched String The speed of a wave travelling along a string with two fixed ends is given by: Where: T?= tension in the string (N) μ = mass per unit length of the string (kg m–1) ...
Stationary Waves Stationary waves, or standing waves, are produced by the?superposition?of two waves of the?same frequency?and?amplitude?travelling in?opposite directions This is usually achieved b...
Phase & Path Difference Waves are said to be?coherent?if they have: The same?frequency A?constant phase difference Phase Difference Two points on a wave, or on different waves, are in ph...
Interference & Superposition of Waves Interference?occurs whenever two or more waves combine to produce a resultant wave with a new?amplitude Superposition?literally means to be?positioned over...
各國數(shù)學(xué)賽事的新賽季時間陸續(xù)敲定，除了廣受關(guān)注的AMC系列、UKMT系列賽事，加拿大的COMC賽事也是大家證明實(shí)力、豐富學(xué)術(shù)背景的選項(xiàng)之一，同樣值得同學(xué)們關(guān)注！ COMC將于今年10月底舉行，此刻正是備賽的黃金階段...
在理科學(xué)習(xí)時計(jì)算器的作用不容小覷。那么，A-Level考試中可以使用計(jì)算器嗎？ 答案是可以的！A-Level考試中的確有一些科目需要使用計(jì)算器。在考試中正確使用計(jì)算器可以幫助我們節(jié)省時間，提高做題的準(zhǔn)確率。 一般...
