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IB DP Physics: HL復習筆記4.3.4 Polarisation

2022-08-01

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: HL復習筆記4.3.3 Superposition

2022-08-01

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 su...

IB DP Physics: HL復習筆記4.3.2 Amplitude & Intensity

2022-08-01

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, in...

IB DP Physics: HL復習筆記4.3.1 Wavefronts

2022-08-01

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: HL復習筆記4.2.4 Sound Waves

2022-08-01

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: HL復習筆記4.2.3 Electromagnetic Waves

2022-08-01

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: HL復習筆記4.2.2 Transverse & Longitudinal Waves

2022-08-01

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...

IB DP Physics: HL復習筆記4.2.1 Properties of Waves

2022-08-01

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...

IB DP Physics: HL復習筆記4.1.4 Energy in SHM

2022-08-01

Energy in SHM The?total energy?of an object oscillating with?SHM?is the?sum?of?its?potential energy?(gravitational?or?elastic) and?kinetic energy E = EP?+ EK Where: E?= total energy in joules (J) E...