Special relativity, blackbody radiation, Compton scattering, photoelectric effect, Bohr model, quantum mechanics, molecules, condensed matter, nuclear physics, elementary particles.

Prerequisites: Physics 24 with a minimum grade of C-; Mathematics 6A.

4

Units

Optional

Grading

1, 2, 3

Passtime

None

Level Limit

Letters and science

College
Unlocks ECE 136B MATRL 135 PHYS 5L PHYS 13CL PHYS 20CL PHYS 133
David Weld
4.3
10 reviews

Lecture

BRDA 1640
T R
12:30 PM - 13:45 PM
57 / 94

Sections

PHELP1445
R
14:00 PM - 14:50 PM
33 / 35
PHELP1445
R
15:00 PM - 15:50 PM
8 / 35
NH 1111
R
16:00 PM - 16:50 PM
16 / 24
Spring 2024 . Nelson H
BRDA 1640
M W
09:30 AM - 10:45 AM
See All
PHYS 25 Nelson H Spring 2024 Total: 92
PHYS 25 Koutroulakis Spring 2023 Total: 47
See All
10
4.3
110B . 11 Months Ago

One of the hidden gems in the physics department. Can be dull at times in lecture, but makes up for it with his jokes. His homework is challenging but exams are straightforward, especially since he allows a cheat sheet. He has a strong understanding of EM, which is exemplified by his clear lectures and adeptness at responding to student questions.

0 helpful 0 unhelpful
110B . 11 Months Ago

Overall the lectures are easy to follow and well prepared. However, the inconsistencies between homeworks and exams are frustrating. In the homework that was due a day before the midterm, there are ~5 questions on stress tensor, but there were none on the midterm. Similar things goes for the final.

0 helpful 0 unhelpful
PHYS110A . 1 Year, 2 Months Ago

As far as physics profs go, he's pretty good. Lectures are clear and we follow the chapters in the book pretty closely. The material is difficult, so definitely go to office hours when you can, sometimes he will help you get started on a HW problem. You are allowed a cheat sheet on exams which is a lifesaver!

0 helpful 0 unhelpful
110B . 2 Years Ago

One of the best professor in the physics department in teaching. He knows the content pretty well and can provide great physical intuition and many real-life examples. Have taken his 115C in the fall, which was also delightful. Homework and exams are not hard. This means this course is relatively less stressful. In general, I strongly recommend.

0 helpful 0 unhelpful
110B . 3 Years Ago

His classes are very thorough and he explains the material very well but his exams are a bit difficult and he doesn't provide any practice exams so, get ready to study hard ... on your own.

0 helpful 0 unhelpful
PHYS119B . 8 Years Ago

I took the class since he got good reviews. But the class was dry and boring, and Prof. Weld often makes mistakes. It is better not to attend the lecture and just study by myself.

0 helpful 7 unhelpful
See all 10 reviews
PHYS 21
93 / 94 Enrolled
General Physics
Mark Sherwin 2.0
T R
09:30 AM - 10:45 AM
32.9% A
PHYS 21
94 / 94 Full
General Physics
T B A
T R
09:30 AM - 10:45 AM
32.9% A
PHYS 22
72 / 94 Enrolled
General Physics
David Caratelli 4.8
M W
11:00 AM - 12:15 PM
35.3% A
PHYS 24
61 / 94 Enrolled
General Physics
Sebastian Streichan 4.4
M W
12:30 PM - 13:45 PM
42.7% A
PHYS 29
50 / 50 Full
Introduction to Computer Programming for the Physical Sciences
Joseph Hennawi 2.7
R
14:00 PM - 15:15 PM
74.8% A
PHYS 29
50 / 50 Full
Introduction to Computer Programming for the Physical Sciences
Joseph Hennawi 2.7
T
14:00 PM - 15:15 PM
74.8% A