Astronomy picture of 
the day

Phys 4C Light and Modern Physics - 2025 Spring

Instructor: Professor Ringwald
Email: ringwald[at]csufresno.edu and replace [at] with @
Phone: (559) 278-8426
Also: (559) 278-2371

Office: Room 11 of the J-wing of Mclane Hall
(about 15 meters east of the large classroom McLane 161 and the ground-floor Women's Room)

Office hours (from 2025 January 16 to May 7): MoWe 8-9 p.m. and Tu 2-5 p.m.
Professor Ringwald can meet with students outside office hours, but please email or call first.

Students don't need an appointment to come in during office hours. This is time set aside for you, when I will be in.

Education is fundamentally a self-directed activity. One gets out of it what one puts into it, and one needs to pursue it actively

Please feel free to contact me if you have any problems in this course, or if you're doing well, and just want to talk. It's in my interest, and I care, that you do well!

Click here for the
Course Syllabus
.
Click here for the
Course Schedule
.
Click here for the
Homework Assignments
.
Click here for the
Formula List
provided on all exams,
and useful for homework
.
(This is a pdf file, which you can read with
Adobe Acrobat Reader, a free program available here.)
Click here for the
Solutions to the Homework
and Exams,

including
class handouts, videos,
notes, and PowerPoints.
(Updated on 2/20;
to be updated on 2/28.)



News, updated on 2025 February 20:


Go to Professor Ringwald's home page

Webpage by Professor Ringwald (ringwald[at]csufresno.edu and replace [at] with @)
Department of Physics, California State University, Fresno. Please read this disclaimer.