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87. Coulomb's law (1)(2)
2023年2月6日 637观看
Physics II
大学课程 / 物理化学
共362集
36万人观看
1
Introduction
05:41
2
Basic Concepts
06:46
3
Atomic theory of matter - 1
05:20
4
Atomic theory of matter - 3
05:23
5
Thermal equilibrium & temperature
08:27
6
Equilibrium state
06:10
7
The gas laws - 1
05:04
8
The gas laws - 3
05:05
9
Absolute temperature
08:10
10
The Ideal gas law
07:59
11
Avogadro's hypothesis
03:14
12
Volume at STP (Example 1)
06:33
13
Bubble in a lake (Example 2)
05:10
14
Two tubes (Thinking)
08:45
15
Introduction
02:10
16
Ideal gas model
05:29
17
Pressure in the gas (1)(2)(3)
09:26
18
Pressure in the gas (1)(2)(3)
06:47
19
Pressure in the gas (1)(2)(3)
06:58
20
Pressure in explosion
05:20
21
Molecular interpretation of temperature
03:08
22
Molecular kinetic energy
08:55
23
Mean speed and rms speed
05:01
24
Distribution of molecular speeds
06:07
25
Maxwell distribution of speeds
05:15
26
Shape of the curve
07:05
27
Average speed
06:38
28
Three statistical speeds
03:09
29
Using f (v)
07:40
30
Real gases
07:52
31
Mean free path
09:50
32
Van der Waals equation
05:38
33
Collision frequency
06:40
34
Diffusion
06:45
35
Thermal processes
08:29
36
Heat as energy transfer
04:16
37
Internal energy - 1
06:43
38
Internal energy - 3
06:41
39
The first law of thermodynamics
07:03
40
Calculating the work
06:54
41
Heat in process (Example 1)
07:28
42
Three simple processes
08:24
43
Adiabatic process
05:39
44
Cyclic process (Example 2) - 1
06:46
45
Cyclic process (Example 2) - 3
06:52
46
Specific heat
06:42
47
Molar specific heat
09:21
48
Degrees of freedom & Review - 1
07:46
49
Degrees of freedom & Review - 3
07:52
50
Equipartition of energy
07:49
51
Active DoF & Cv
09:54
52
Energy in gas system
08:15
53
Isobaric molar specific heat CP
09:31
54
Adiabatic equation
08:38
55
Some Questions - 1
06:44
56
Some Questions - 3
06:49
57
Isobaric & adiabatic - 1
05:31
58
Isobaric & adiabatic - 3
05:30
59
Free expansion
06:43
60
Heat Transfer
04:46
61
Introduction
08:31
62
Heat engines
08:57
63
Engine efficiency
08:46
64
Calculation of Efficiency - 1
06:24
65
Calculation of Efficiency - 3
06:21
66
Reversible & irreversible processes
07:40
67
Carnot engine
09:15
68
Carnot’s theorem
03:09
69
nd law of thermodynamics (1)(2)
09:41
70
nd law of thermodynamics (1)(2)
03:32
71
False advertising (Example 2)
05:16
72
Equivalence of two statements
03:45
73
Refrigerator & Heat pump
06:49
74
Entropy (1)(2)(3)
09:10
75
Entropy (1)(2)(3)
04:57
76
Entropy (1)(2)(3)
05:58
77
Mixing water
07:09
78
Free expansion
08:51
79
Entropy Increase Principle
06:42
80
Time’s arrow
04:41
81
Order to disorder (1)(2)
04:12
82
Order to disorder (1)(2)
07:30
83
Living beings & entropy
06:38
84
Introduction - 1
06:16
85
Introduction - 3
06:13
86
Electric charge
07:52
87
Coulomb's law (1)(2)
05:54
88
Coulomb's law (1)(2)
05:06
89
Electric field - 1
05:11
90
Electric field - 3
05:11
91
Properties of electric field
04:38
92
Electric equilibrium (Example 1)
08:45
93
Continuous charge distribution
04:29
94
A line of charge (Example 2) - 1
09:40
95
A line of charge (Example 2) - 3
09:40
96
A plane of charge (Question) - 1
06:44
97
A plane of charge (Question) - 3
06:47
98
Uniform charged ring - 1
08:54
99
Uniform charged ring - 3
09:00
100
Uniform charged disk - 1
05:48
101
Uniform charged disk - 3
05:45
102
Electric dipoles (1)(2) - 1
05:23
103
Electric dipoles (1)(2) - 3
05:21
104
Electric dipoles (1)(2)
06:23
105
Dipole in external field - 1
05:38
106
Dipole in external field - 3
05:34
107
Vibrating charge
03:16
108
Field lines
04:16
109
Properties of field lines
07:38
110
Electric flux (1)(2) - 1
05:27
111
Electric flux (1)(2) - 3
05:27
112
Electric flux (1)(2)
07:58
113
Examples of electric flux
07:56
114
Gauss's law
05:51
115
Validity of Gauss's law (1)(2)
05:30
116
Validity of Gauss's law (1)(2)
04:27
117
Explanations of Gauss's law - 1
06:30
118
Explanations of Gauss's law - 3
06:32
119
Applications of Gauss's law
07:54
120
Spherical shell (Example 1)
09:42
121
Uniformly charged sphere - 1
05:07
122
Uniformly charged sphere - 3
05:09
123
Holey sphere
06:52
124
Uniformly charged long cylinder - 1
08:21
125
Uniformly charged long cylinder - 3
08:25
126
Conductor in external field
08:03
127
Charges on Conductor - 1
05:56
128
Charges on Conductor - 3
05:58
129
E nearby conductor surface
08:05
130
Electrostatic shielding
03:08
131
Flat metal plates
04:26
132
Introduction - 1
06:19
133
Introduction - 3
06:24
134
Electric potential energy
05:39
135
Electric potential & potential difference
04:52
136
Zero point
03:37
137
Properties of electric potential
02:22
138
Calculation of electric potential
03:33
139
Potential of electric dipole (Example 1)
06:16
140
Charged conductor sphere (Example 2) - 1
06:36
141
Charged conductor sphere (Example 2) - 3
06:36
142
Uniformly charged rod (Example 3)
04:23
143
Charged ring
06:53
144
Conical surface (1)(2)
02:54
145
Conical surface (1)(2)
06:36
146
Electrostatic induction - 1
07:33
147
Electrostatic induction - 3
07:39
148
Breakdown voltage
08:43
149
Equipotential surfaces
06:22
150
Some examples
07:45
151
E determined from V
06:38
152
Gradient of V
05:34
153
Determine E from V (Example 5)
02:01
154
Determine V from E (Example 6)
05:44
155
Capacitors & capacitance
07:53
156
Capacitors
06:39
157
Determine capacitance
08:09
158
Cylindrical capacitor (Example 1) - 1
06:04
159
Cylindrical capacitor (Example 1) - 3
06:04
160
Spherical capacitor - 1
05:24
161
Spherical capacitor - 3
05:24
162
Capacitors in series and parallel
06:44
163
Capacitor combination (Example 2 & 3) - 1
06:13
164
Capacitor combination (Example 2 & 3) - 3
06:18
165
Electric energy storage - 1
05:09
166
Electric energy storage - 3
05:09
167
Energy in the field
05:11
168
Energy in capacitor (Example 4)
03:53
169
Energy distribution (1)(2)(3)
01:20
170
Energy distribution (1)(2)(3)
05:14
171
Energy distribution (1)(2)(3)
07:39
172
Dielectrics
08:39
173
Permittivity of material
05:30
174
Electrostatics in dielectric
07:22
175
Half filled dielectric (1)(2)
02:18
176
Half filled dielectric (1)(2)
03:09
177
Molecular description (1)(2)
06:14
178
Molecular description (1)(2) - 1
05:24
179
Molecular description (1)(2) - 3
05:29
180
Thinking & question
05:52
181
Key points in Chapter 23&24
03:31
182
Magnets
04:23
183
Magnetic field
03:37
184
Currents produce magnetism - 1
05:21
185
Currents produce magnetism - 3
05:20
186
Magnetic force on a current (1)(2)
08:21
187
Magnetic force on a current (1)(2)
06:17
188
Force on curved wire
08:07
189
Nonuniform field
09:02
190
Interaction of currents
09:25
191
Railgun
05:10
192
Torque on a current loop
09:47
193
Magnetic dipoles
09:12
194
Magnetic moment of atom (Example 3)
07:23
195
μ of rotating charge (Example 4)
05:51
196
Force on moving charges
07:28
197
Motion in a uniform field (1)(2)
03:59
198
Motion in a uniform field (1)(2)
03:33
199
Aurora & magnetic confinement
06:37
200
Lorentz equation (Example 5)
02:56
201
Different regions (Example 6)
05:18
202
Challenging question
02:02
203
The Hall effect
08:56
204
Applications of Hall effect
04:42
205
Introduction
04:52
206
Biot-Savart Law
05:38
207
B due to full current
05:54
208
A straight current (Example 1) - 1
06:21
209
A straight current (Example 1) - 3
06:25
210
Square loop (Example 2)
08:39
211
Force between parallel wires
06:01
212
Circular current - 1
06:24
213
Circular current - 3
06:25
214
Combined currents (Example 3)
08:42
215
Rotating charged ring
05:44
216
Magnetic flux
04:21
217
Gauss's law for magnetic field
04:35
218
Ampere's law (1)(2)(3)
03:22
219
Ampere's law (1)(2)(3)
09:17
220
Ampere's law (1)(2)(3)
06:58
221
Equations for E & B field
05:09
222
Cylindrical current (Example 4) - 1
07:02
223
Cylindrical current (Example 4) - 3
07:00
224
Infinite plane current
02:54
225
Solenoid
08:21
226
Toroid
09:00
227
B produced by moving charge
08:29
228
Ferromagnetic
09:06
229
Induced EMF
06:35
230
Faraday's law of induction
08:42
231
Lenz's law - 1
05:29
232
Lenz's law - 3
05:27
233
Rotating coil (Example 1)
06:03
234
Induced charges
03:59
235
EMF induced in moving conductor
07:46
236
Derived by Faraday's law
04:23
237
Motion in a straight line (Example 2)
08:21
238
Rotates in uniform field (Example 3)
05:18
239
Rotates in nonuniform field
04:35
240
Motion on rails (Example 4)
05:52
241
Changing B produces E
04:48
242
Faraday's law - general form
06:38
243
Induced electric field
05:31
244
Comparison of fields
07:09
245
Vortex electric field (Example 5)
08:54
246
EMF in a wire - 1
07:41
247
EMF in a wire - 3
07:43
248
Self induction
03:00
249
Applications of induction
03:25
250
Vortex current
04:17
251
Self inductance
06:55
252
EMF of inductor
05:30
253
Determine inductance
05:07
254
Inductance of coaxial cable (Example 1)
07:30
255
Inductance of toroid
03:55
256
Mutual inductance (1) (2)
04:54
257
Mutual inductance (1) (2)
03:12
258
Straight wire and coil (Example 2) - 1
05:45
259
Straight wire and coil (Example 2) - 3
05:48
260
Two coils (Example 3) - 1
08:20
261
Two coils (Example 3) - 3
08:18
262
Magnetic energy storage
09:04
263
Energy in the field
03:12
264
Energy in a toroid (Example 4)
04:20
265
Challenging problem
01:14
266
LR circuits
03:15
267
LC circuits
04:31
268
Introduction
02:36
269
Changing E produces B
05:30
270
Discontinuity of current
05:37
271
Displacement current
08:15
272
Generalized Ampere's law
05:13
273
Charging capacitor (Example 1)
08:55
274
Capacitor in LC circuit
06:51
275
Summary of electromagnetism
06:52
276
Maxwell’s equations (1)(2)
04:40
277
Maxwell’s equations (1)(2)
02:09
278
Production of EM waves
04:51
279
Wave equation for EM wave
06:05
280
Speed of EM wave
06:42
281
Properties of EM wave
05:07
282
Energy in EM wave
08:53
283
Poynting vector
09:02
284
Sunshine (Example 3)
04:25
285
Radiation pressure
07:50
286
Revolution of classical physics
04:23
287
Blackbody radiation
05:29
288
Classical theories
06:45
289
Planck's quantum hypothesis
03:38
290
Concept of quantum
05:57
291
Photon theory of light
05:04
292
Energy of photon
07:07
293
Photoelectric effect - 1
06:17
294
Photoelectric effect - 3
06:20
295
Experimental results
05:42
296
Explanation by photon theory
06:12
297
Compare with experiment
03:36
298
Energy of photon
05:33
299
Compton Effect
06:27
300
Experimental results
03:56
301
Explanation by photon theory
08:16
302
Compton shift
06:07
303
X-ray scattering (Example 4)
03:06
304
Some questions
08:26
305
Wave-particle duality
06:06
306
Wave nature of matter
07:14
307
de Broglie wavelength
05:08
308
Experiments of de Broglie wave
04:30
309
What is an electron?
03:08
310
Early models of atom
03:43
311
Atomic spectra
03:19
312
Spectrum of Hydrogen
02:42
313
Bohr’s three postulates
03:20
314
Bohr model
03:30
315
Energy levels
02:15
316
Transition & radiation
04:34
317
Energy level diagram
03:52
318
Transition of atom
04:59
319
Single-electron ions - 1
00:00
320
Single-electron ions - 3
05:16
321
Value of Bohr's theory
04:53
322
Wave function - 1
07:10
323
Wave function - 3
07:13
324
Probability wave
08:01
325
Coherent & de-coherence
07:04
326
Quantum Uncertainty
06:59
327
Heisenberg uncertainty principle
05:03
328
Other forms of uncertainty principle
09:10
329
A quantum criterion (Example 1)
06:33
330
Diffraction of electron
01:12
331
Probability vs determinism
07:49
332
Schrödinger equation (1)(2)(3)(4)
07:13
333
Schrödinger equation (1)(2)(3)(4)
04:15
334
Schrödinger equation (1)(2)(3)(4)
04:44
335
Schrödinger equation (1)(2)(3)(4)
06:09
336
Solution of S-equation
04:11
337
Infinitely deep square well potential
05:13
338
Solution by S-equation (1)(2)
04:34
339
Solution by S-equation (1)(2)
03:14
340
Quantum properties (1)(2)
04:25
341
Quantum properties (1)(2)
05:03
342
Electron in the well (Example 2)
03:30
343
Probability in well (Example 3)
06:21
344
Probability for other ψ
02:24
345
Finite potential well
06:04
346
Tunneling through a barrier
02:20
347
Applications of tunneling
06:36
348
S-equation for H atom
07:09
349
Three quantum numbers (1)(2)
04:29
350
Three quantum numbers (1)(2)
09:25
351
The 4th quantum number (1)(2)
07:17
352
The 4th quantum number (1)(2)
06:42
353
Possible states (Example 1)
04:58
354
Energy and angular momentum (Example 2)
03:14
355
Wave function for H atom
03:19
356
Electron cloud
02:02
357
Complex atoms
05:20
358
Pauli exclusion principle
07:40
359
Shell structure of electrons
06:08
360
Periodic table of elements
05:09
361
Electron configurations (Example 3)
04:32
362
Laser
06:36
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