2023夏季GCSE考試和A-Level考試計(jì)劃官宣！
和體制內(nèi)一樣，英國(guó)教育部也會(huì)在“黃金九十月”發(fā)布GCSE最新考試政策，各大考試局會(huì)根據(jù)教育部的相關(guān)政策，做出相應(yīng)回復(fù)，修改考試大綱，增減主題內(nèi)容。 英國(guó)教育部和考試監(jiān)管機(jī)構(gòu)Ofqual官宣2022年秋季及2023年夏季...
Edexcel A Level Physics:復(fù)習(xí)筆記5.33 Energy of a Photon
Energy of a Photon Photons are fundamental particles which make up all forms of electromagnetic radiation A photon is a massless “packet” or a “quantum” of electromagnetic energy What this means is...
Edexcel A Level Physics:復(fù)習(xí)筆記5.32 Wave-Particle Duality
Wave-Particle Duality Light can behave as a particle (i.e. photons)?and?a wave This phenomenon is called the wave-particle nature of light or?wave-particle duality Light interacts with matter, such...
Edexcel A Level Physics:復(fù)習(xí)筆記5.31 Pulse-Echo Technique
Pulse-Echo Technique Foetal Scanning In medicine, ultrasound can be used to construct images of a?foetus?in the womb An ultrasound detector is made up of a?transducer?that produces and detects a be...
Edexcel A Level Physics:復(fù)習(xí)筆記5.30 Transmission & Reflection of Waves
Transmission & Reflection of Waves When waves are incident on the interface between two different media, they are either?transmitted?or?reflected 'Incident on' simply means 'to meet' The interf...
Edexcel A Level Physics:復(fù)習(xí)筆記5.29 The de Broglie Equation
The de Broglie Equation Using ideas based upon the quantum theory and Einstein’s theory of relativity, de Broglie theorised that not only do EM waves sometimes behave as particles, but that very sm...
Edexcel A Level Physics:復(fù)習(xí)筆記5.28 The Wave Nature of Electrons
The Wave Nature of Electrons Electron diffraction was the first clear evidence that matter can behave like light and has wave properties This is demonstrated using the electron diffraction tube The...
Edexcel A Level Physics:復(fù)習(xí)筆記5.27 Core Practical 8: Investigating Diffraction Gratings
Core Practical 8: Investigating Diffraction Gratings Aim of the Experiment To find the wavelength of light using a diffraction grating Variables Independent variable?= Distance between maxima,?h De...
Edexcel A Level Physics:復(fù)習(xí)筆記5.26 The Diffraction Grating Equation
The Diffraction Grating Equation A?diffraction grating?is a plate on which there is a very large number of parallel, identical, close-spaced slits When?monochromatic light?is incident on a grating,...
