2022年10-12月高含金量計算機競賽匯總
申請美國大學越來越內卷，尤其是名校申請。復盤近三年被TOP20錄取的大陸學生，或多或少都有學術活動經歷，甚至有家長總結“學術活動是申請TOP20的標配”。雖然不是很準確，但已經足以說明“內卷”程度。 2022年已過大...
Edexcel A Level Physics:復習筆記5.38 Atomic Line Spectra
Atomic Line Spectra An emission line spectrum is produced when: An excited electron in an atom moves from a higher to a lower energy level and emits a photon with an energy corresponding to the dif...
Edexcel A Level Physics:復習筆記5.37 The Particle Nature of EM Radiation
The Particle Nature of EM Radiation The Particle Nature of Light In classical wave theory, electromagnetic (EM) radiation is assumed to behave as a wave This is demonstrated by the fact EM radiatio...
Edexcel A Level Physics:復習筆記5.36 The Electronvolt
The Electronvolt The electronvolt is a unit which is commonly used to express very small energies This is because quantum energies tend to be much smaller than 1 Joule The electronvolt is derived f...
Edexcel A Level Physics:復習筆記5.35 The Photoelectric Equation
The Photoelectric Equation Since energy is always conserved, the energy of an incident photon is equal to: The work function?+?the maximum kinetic energy of the photoelectron The energy within a ph...
2022年10-12月高含金量經濟商科競賽匯總
申請美國大學越來越內卷，尤其是名校申請。復盤近三年被TOP20錄取的大陸學生，或多或少都有學術活動經歷，甚至有家長總結“學術活動是申請TOP20的標配”。雖然不是很準確，但已經足以說明“內卷”程度。 2022年已過大...
Edexcel A Level Physics:復習筆記5.34 The Photoelectric Effect
The Photoelectric Effect The?photoelectric effect?is the phenomena in which electrons are emitted from the surface of a metal?upon the absorption of electromagnetic radiation Electrons removed from...
Edexcel A Level Physics:復習筆記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...
2022年10-12月高含金量人文社科競賽匯總
申請美國大學越來越內卷，尤其是名校申請。復盤近三年被TOP20錄取的大陸學生，或多或少都有學術活動經歷，甚至有家長總結“學術活動是申請TOP20的標配”。雖然不是很準確，但已經足以說明“內卷”程度。 2022年已過大...
Edexcel A Level Physics:復習筆記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:復習筆記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:復習筆記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...
