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講者:許永昌 老師 1. Contents Preview of this Chapter 2. Basis used in a curved coordinate Distance Integrals Differential vector Operators 2.

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Presentation on theme: "講者:許永昌 老師 1. Contents Preview of this Chapter 2. Basis used in a curved coordinate Distance Integrals Differential vector Operators 2."— Presentation transcript:

1 講者:許永昌 老師 1

2 Contents Preview of this Chapter 2. Basis used in a curved coordinate Distance Integrals Differential vector Operators 2

3 Preview of this Chapter Basis vectors Orthogonal Coordinates Integral & differential vector operators. Tensor (introduction) Pseudotensors, dual tensors 3

4 Basis vectors 4

5 q 1 =constant. q 2 =constant. q 3 =constant. Basis vectors (Continue) 5

6 Exercise If q 1 =x, q 2 =x+y, find out 畫出他們的等值線。 6

7 Basis vectors (final) 7

8 Exercise Find {h i } for spherical coordinate. 8

9 Some basic operations of vectors Vectors: V= Displacement: dr= Distance: ds 2 = 9

10 Some basic operations of vectors (Continue) Inner product: A  B= Cross product: A  B= 10

11 Integrals Line integral  V  dr= Surface integral Area element d  = 一般形式? Volume integral Volume element d  = 11

12 Homework 2.1.1 (2.3.1e) 2.1.3 (2.3.3e) 2.1.6 (2.3.6e) 12

13 Gradient Main Concepts: df=dr  f df= We get 13

14 Exercise The  f in spherical coordinate. 先自行條列出基本概念。 14

15 Divergence Main Concepts: For orthonormal coordinate: 15 d1d1 d2d2

16 Exercise The  V in spherical coordinate. 先自行條列出基本概念。 16

17 Curl Main Concepts: If, we get 17

18 Exercise The curl V in Spherical Coordinate. 先自行條列出基本概念。 18

19 Stop to think Can we use: to find out  V and  V ? You can try to apply it for a cylindrical coordinate. 19 條件是:用的是 orthogonal basis.

20 Homework 2.2.2 (2.4.2e) 2.2.3 (2.4.3e) 2.2.4 (2.4.4e) 20

21 Nouns 21


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