2022-2023年IMMC秋季賽報名已開啟，IMMC競賽流程和比賽日程了解一下！
數(shù)學(xué)建?；顒?，是從20世紀(jì)60、70年代開始進(jìn)入一些美國大學(xué)課堂的。中國的清華、復(fù)旦在80年代初將數(shù)學(xué)建模引入課堂。各種形式的數(shù)學(xué)建模、數(shù)學(xué)實驗課程和講座，為培養(yǎng)學(xué)生利用數(shù)學(xué)方法分析、解決實際問題的能力開...
Edexcel A Level Physics:復(fù)習(xí)筆記10.7 Equations for Cosmology
Redshift Equation Recall the Doppler effect is defined as: The apparent change in wavelength or frequency of the radiation from a source due to its relative motion away from or toward the observer ...
Edexcel A Level Physics:復(fù)習(xí)筆記10.6 Doppler Shift
Doppler Shift If a wave source is stationary, the wavefronts spread out?symmetrically If the wave source is moving, the waves can become?squashed?together or?stretched?out If the wave source is mov...
2023himcm競賽報名時間將截止，如何備賽？
抓緊時間，下半年可以報名的國際學(xué)術(shù)活動不多了，疫情之下，各項規(guī)劃都變得非常謹(jǐn)慎，大家一定要注意時間節(jié)點。2023himcm學(xué)術(shù)活動報名時間將截止，你報名了嗎？你是如何備賽的？ 報名截止日期：2022年11月2日14:0...
Edexcel A Level Physics:復(fù)習(xí)筆記10.5 The Life Cycle of Stars
The Life Cycle of Stars The life cycle of stars go in predictable stages The exact route a star's development takes depends on its initial mass Initial Stages for All Masses The first four stages i...
Edexcel A Level Physics:復(fù)習(xí)筆記10.4 The Hertzsprung-Russell Diagram
The Hertzsprung - Russell Diagram Danish astronomer Ejnar Hertzsprung, and American astronomer Henry Noris Russell, independently plotted the?luminosity?of different stars against their?temperature...
Edexcel A Level Physics:復(fù)習(xí)筆記10.3 Standard Candles
Determining distance using standard candles Standard Candles A standard candle is defined as: An astronomical object which has a known luminosity due to a characteristic quality possessed by that c...
Edexcel A Level Physics:復(fù)習(xí)筆記10.2 Parallax
Determining Distance using Parallax The?principle of parallax?is based on how the position of an?object?appears to change as the position of the?observer?changes For example, when?observing?the sca...
Edexcel A Level Physics:復(fù)習(xí)筆記10.1 Inverse Square Law of Flux
Inverse Square Law of Flux The moment the light leaves the surface of the star, it begins to spread out uniformly through a spherical shell Light sources which are further away appear fainter becau...
Edexcel A Level Physics:復(fù)習(xí)筆記9.12 Wien’s Law
Wien's Law Wien’s displacement law relates the observed wavelength of light from an object to its surface temperature, it states: The black body radiation curve for different temperatures peaks at ...
Edexcel A Level Physics:復(fù)習(xí)筆記9.11 Stefan-Boltzmann Law
Stefan-Boltzmann Law An objects?luminosity?depends on two factors: Its surface temperature Its surface area The relationship between these is known as the?Stefan-Boltzmann Law, which states:...
Edexcel A Level Physics:復(fù)習(xí)筆記9.10 Black Body Radiation
Black Body Radiation Black body radiation is the name given to the?thermal radiation?emitted by all bodies (objects) All objects, no matter what temperature, emit black body radiation in the form o...
