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...
各国数学赛事的新赛季时间陆续敲定，除了广受关注的AMC系列、UKMT系列赛事，加拿大的COMC赛事也是大家证明实力、丰富学术背景的选项之一，同样值得同学们关注！ COMC将于今年10月底举行，此刻正是备赛的黄金阶段...
在理科学习时计算器的作用不容小觑。那么，A-Level考试中可以使用计算器吗？ 答案是可以的！A-Level考试中的确有一些科目需要使用计算器。在考试中正确使用计算器可以帮助我们节省时间，提高做题的准确率。 一般...
因为2022年pupc学术活动报名时间前几天已经截止，所以已经报名的同学，就要做好最后一个月的备考准备，2022年pupc学术活动时间临近，备考试题从哪里找？应该注意什么，一起来了解一下。 学术活动时间 Onsite现场...
2022年马上就要结束了，但是国际学术活动正在热火朝天的举办，比如英国王牌物理学术活动BPHO考试，bpho考试时间2022临近，你准备好了吗？ 截至目前，官网已经更新了2022-2023年BPHO&BAAO的考试时间，其中BPHO...
