CHINKEII's notes

CHINKEII's notes Blogger level

Total 29 articles
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Latest articles

2025-07-08
一級陸上無線技術士ー公式 1、Cutoff frequency of waveguide: (m for x-axis, n for y-axis) TE_{m,n}\rightarrow f_{c}(m,n)=\frac{1}{2\pi\sqrt{\mu\epsilon}}\sqrt{(\frac{m\pi}{a})^2+
- 2025-07-08
- 1
- 0
- 0
- RF
- EM
2025-05-30
Ch10-Vector calculus 1. Differentiation of vectors 1. basis vectors
- 2025-05-30
- 9
- 0
- 0
2025-03-16
Build a homemade optical tweezer In order to capture a 5um particle, it's easier to use the geometric optics theory to get start with. So I chose a bigger particle (5um) which is simi
- 2025-03-16
- 88
- 0
- 0
2024-11-10
Ch8-Matrices and vector spaces Mathematical Methods for Physics and Engineering 1. Basic definitions: (0) Definition of linear vector space: a set of \mathbf{a},\mathbf{b},\mathbf{c
- 2024-11-10
- 35
- 0
- 0
- MMPE
2024-11-03
Ch7-Vector algebra Mathematical Methods for Physics and Engineering 1. Some conclusions: (1) Ratio theorem: Line segment AB is divided into AP and PB. AP:PB = \lambda:\m
- 2024-11-03
- 27
- 0
- 0
- MMPE
2024-10-26
Ch6-Multiple integrals Mathematical Methods for Physics and Engineering 1. Some integrals: (1) 2-D integrals: I=\int_{x=a}^{x=b}\left\{\int_{y=y_1(x)}^{y=y_2(x)}f(x,y) dy\ri
- 2024-10-26
- 39
- 0
- 0
- MMPE
2024-08-31
Ch5-Partial differentiation Mathematical Methods for Physics and Engineering 1. Some properties of partial differentiation: 1.1 Clairaut's theorem: Let f: \mathbb{R}^n \to \mathb
- 2024-08-31
- 75
- 0
- 0
- Math
- MMPE
2024-08-25
Python basic certificate T＆F quizzs: #1. Do not need to complie. [T. But need an interpreter, usually cython.] #2. Grouping sentences with parentheses. [F. It's space. Indenta
- 2024-08-25
- 44
- 0
- 0
2024-08-19
Ch4-Series and limits Mathematical Methods for Physics and Engineering 1. Basic sum of series [Page 117-118]: Basic series: \begin{array}{ll} Arithmetic\ series:S_N=\frac{N
- 2024-08-19
- 45
- 0
- 0
- Math
- MMPE
2024-08-18
Ch3-Complex numbers and hyperbolic functions Mathematical Methods for Physics and Engineering 1. Complex number division [Page 90-91]: \frac{z_1}{z_2}=\frac{x_1x_2+y_1y_2}{x_2^2+y_2^2}+i\frac{x_2
- 2024-08-18
- 59
- 0
- 0
- Math
- MMPE

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