Astronomy picture of the day [Solar Dynamics Observatory (SDO) Atmospheric Imaging 
Assembly (AIA) image at 30.4 nm]

Phys 4C Light and Modern Physics - 2019 Fall

Instructor: Professor Ringwald
E-mail: ringwald[at] and replace [at] with @
Phone: (559) 278-8426
Also: (559) 278-2371

Office: McLane Hall J-wing Room 11 (east of McLane 161 and the ground-floor Women's Room)
Office hours (between August 21 and December 12): MoWe 11:00-11:50 a.m. and 5:30-6:30 p.m., TuTh 5:00-6:30 p.m.
If students need to see Professor Ringwald outside office hours, please call or e-mail 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.

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

(Last updated 11/14;
to be updated on 11/22.)

News, updated 2019 November 18:

Go to Professor Ringwald's home page

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