IB DP Physics: SL復習筆記4.3.4 Polarisation
Polarisation Transverse waves can oscillate in any plane perpendicular to the direction of motion (and energy transfer) of the wave Such waves are said to be?unpolarised When a transverse wave is?p...
IB DP Physics: SL復習筆記4.3.3 Superposition
Superposition The?principle of superposition?states that: When two or more waves meet, the resultant displacement is the vector sum of the displacements of the individual waves The principle of sup...
IB DP Physics: SL復習筆記4.3.2 Amplitude & Intensity
Amplitude & Intensity Intensity The?intensity?of a wave is defined as follows: Power per unit area Intensity is measured in?W m–2 Power is defined as: The rate of energy transfer Therefore, int...
IB DP Physics: SL復習筆記4.3.1 Wavefronts
Wavefronts Waves can be represented graphically in two different ways: Wavefronts?- lines joining all the points that oscillate in phase and are perpendicular to the direction of motion (and energy...
IB DP Physics: SL復習筆記4.2.4 Sound Waves
Sound Waves Sound waves are?longitudinal waves?and, as such, require a?medium?in which to propagate Sound waves are generated by oscillating sources, which produce a change in?density?of the surrou...
IB DP Physics: SL復習筆記4.2.3 Electromagnetic Waves
Electromagnetic Waves An electromagnetic wave is generated by the combined oscillation of an?electric?and a?magnetic field These fields oscillate?perpendicular?to each other and to the direction of...
IB DP Physics: SL復習筆記4.2.2 Transverse & Longitudinal Waves
Transverse & Longitudinal Waves In mechanical waves, particles?oscillate?about fixed points There are two types of wave:?transverse?and?longitudinal The type of wave can be determined by the di...
美國大學畢業起薪最低的專業是什么？
眾所周知，花了這么多錢出國留學，不僅要關注大學排名和專業熱度，薪資和就業前景同樣很重要！ 美國大學畢業起薪最低的專業是什么？最近，U.S.News參考各專業本科畢業生工作三年后的薪酬數據，又整理出了10個畢業...
IB DP Physics: SL復習筆記4.2.1 Properties of Waves
Properties of Waves Travelling waves?are defined as follows: Oscillations that transfer energy from one place to another without transferring matter Energy is transferred by the waves, but matter i...
