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StepStudy
Добавлен 10 мар 2021
Math and physics, made simple.
Learn Trigonometry in less than 3 minutes
What even is sin(x) and cos(x)? We will try to define them from the bottom up.
Просмотров: 118
Видео
Projection Vector - proof
Просмотров 364Год назад
Proof of the formula for vector-projection. Projecting a vector onto a vector
Problem 4.2 b) Kittel's Thermal Physics
Просмотров 90Год назад
Problem 4.2 b) Kittel's Thermal Physics (2nd Edition) b) show that the suns surface radiates like a black body.
Problem 4.2 a) Kittel's Thermal Physics
Просмотров 80Год назад
Problem 4.2 a) Kittel's Thermal Physics (2nd Edition) a) show that the suns intensity is 4·10²⁶ J/s if the solar constant is 1.36·10³ J s⁻¹m⁻²
Problem 4.1 Kittel's Thermal Physics
Просмотров 151Год назад
Problem 4.1 Kittel's Thermal Physics (2nd Edition) Find the number of photons
Problem 3.2 c) Kittel's Thermal Physics
Просмотров 93Год назад
Problem 3.2 c) Kittel's Thermal Physics (2nd Edition) c) show that in the limit where mB is much much smaller than 𝛕, the magnetic susceptibility becomes χ=nm²/𝛕
Problem 3.2 b) Kittel's Thermal Physics
Просмотров 73Год назад
Problem 3.2 b) Kittel's Thermal Physics (2nd Edition) b) find the free energy
Problem 3.2 a) Kittel's Thermal Physics
Просмотров 104Год назад
Problem 3.2 a) Kittel's Thermal Physics (2nd Edition) a) determine the magnetization and magnetic susceptibility as a function of temperature
Problem 3.1 b) Kittel's Thermal Physics
Просмотров 73Год назад
Problem 3.1 b) Kittel's Thermal Physics (2nd Edition) b) use the result from a to determine the entropy and the energy of the system
Problem 3.1 a) Kittel's Thermal Physics
Просмотров 96Год назад
Problem 3.1 a) Kittel's Thermal Physics (2nd Edition) a) find the Helmholtz free energy of a 2 level system with energies 0 and ε
Problem 7.1 b) Kittel's Thermal Physics
Просмотров 46Год назад
Problem 7.1 b) Kittel's Thermal Physics (2nd Edition) b) find the density of states for the case of particles in the 2D infinite square well
Problem 7.3 a) Introduction to Quantum Mechanics
Просмотров 829Год назад
Problem 7.3 a) Introduction to Quantum Mechanics (3rd Edition) a) find the eigen states and eigenvalue energies in the infinite square well of 2 identical non interacting spin zero bosons in the ground state and first exited state.
problem 11.8 c) Introduction to Quantum Mechanics
Просмотров 60Год назад
problem 11.8 c) Introduction to Quantum Mechanics (3rd Edition) c) what is the probability of transition if ω₀𝜏
problem 11.8 b) Introduction to Quantum Mechanics
Просмотров 88Год назад
problem 11.8 b) Introduction to Quantum Mechanics (3rd Edition) b) what is the probability of transition if 𝜏 goes to zero?
Problem 7.1 a) Kittel's Thermal Physics
Просмотров 111Год назад
Problem 7.1 a) Kittel's Thermal Physics (2nd Edition) a) what is the density of states function
problem 11.8 a) Introduction to Quantum Mechanics
Просмотров 334Год назад
problem 11.8 a) Introduction to Quantum Mechanics
Problem 5.4 b) Introduction to Quantum mechanics
Просмотров 182Год назад
Problem 5.4 b) Introduction to Quantum mechanics
Problem 5.4 a) Introduction to Quantum mechanics
Просмотров 353Год назад
Problem 5.4 a) Introduction to Quantum mechanics
Problem 8.1 b) Introduction to Quantum Mechanics
Просмотров 268Год назад
Problem 8.1 b) Introduction to Quantum Mechanics
Problem 8.1 a) Introduction to Quantum Mechanics
Просмотров 491Год назад
Problem 8.1 a) Introduction to Quantum Mechanics
problem 4.38 b) Introduction to Quantum Mechanics
Просмотров 74Год назад
problem 4.38 b) Introduction to Quantum Mechanics
problem 4.38 a) Introduction to Quantum Mechanics
Просмотров 277Год назад
problem 4.38 a) Introduction to Quantum Mechanics
Problem 7.1 b) Introduction to Quantum Mechanics
Просмотров 211Год назад
Problem 7.1 b) Introduction to Quantum Mechanics
Problem 7.1 a) Introduction to Quantum Mechanics
Просмотров 222Год назад
Problem 7.1 a) Introduction to Quantum Mechanics
Problem 5.6 e) Kittel's Thermal Physics
Просмотров 42Год назад
Problem 5.6 e) Kittel's Thermal Physics
Problem 5.6 d) Kittel's Thermal Physics
Просмотров 56Год назад
Problem 5.6 d) Kittel's Thermal Physics
Problem 5.6 c) Kittel's Thermal Physics
Просмотров 47Год назад
Problem 5.6 c) Kittel's Thermal Physics
Problem 5.6 b) Kittel's Thermal Physics
Просмотров 36Год назад
Problem 5.6 b) Kittel's Thermal Physics
Jeg var oppe til denne her eksamen, den var fuckin hoed
Thank you, that was a super clear explanation
Thank you for watching, you're very welcome!
The tanh(x) formula that you used is incorrect, the form that you have results in -tanh(x) where x is the mB/tau
You are right. The sign was switched by mistake.🤓
Phenomenal explanation. Really in-depth and thorough, best of all you review concepts that may already be familiar to someone using the text so that we connect it with what we learned! Thank you so much for this series. I will be using you for QM and I'm hoping you'll do a series for an Electricity and Magnetism textbook as well!
Thank you so much! Really happy to be of help😊
best
Thank you
I guess you forget to put a sin(\theta) in the differential part of the intergral in 2:19
Correct! My apologies
@@StepStudy nice video btw, thanks for the content.
Excellent teaching. No one can fully see all the mathematical transformations at the speed you are presenting it, unless one is already an expert. Since the videos are aimed at teaching students, a slower speed or breaking the videos into two parts would help. Thank you for putting in the time to help learners.
Thank you for watching! I appreciate the feedback✏️ In my own experience learning quantum mechanincs I found that simply seeing the solutions often made it click for me. The idea behind the videos then was to give people a quick and accessible set of solutions with verbal explanations to pause and ponder over. However I have had many comments about the excessive speed now, and will surely take it into consideration for future videos😄
You may also consider emphasizing areas where students tend to make mistakes, or miss some key points, because, as a beginner, it's not always clear how to set up the problems or which approach to take. Thanks again for the wonderful work!@@StepStudy
2:26 er brøkreglen forkert. den rigtige er a/b*c/d= (a*c)/(b*d)
Really nice but can you slow down a bit please?? Amazing series and much appreciated
I’m glad you found the videos helpful, and i really appreciate the feedback! I’ll make sure to slow down a bit
obviously, you could've also checked if A was hermitian, by checking if it was equal to it´s own hermitian conjugate. ie. the transposed and complex conjugated A is equal to A itself if A is hermitian. You would find, of course, that it isn't: A^† ≠ A
Quick comment: the “Henri poincaré sphere” is the wrong name. I confused the Bloch Sphere (correct name) with a similar concept from the field of optics concerning polarization States. Sorry
endelig en video vi forstår om vektorer!! tak vh. anne og louise