Latest SOHO Extreme ultraviolet Imaging Telescope Fe IX,X 17.1 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope Fe XII 19.5 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope Fe XV 28.4 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope He II 30.4 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope Fe XVI 33.5 nm solar image

{Tiny solar photospheric magnetogram thumbnail image} {Tiny 1083.0 nm solar thumbnail image} {Tiny solar chromospheric magnetogram thumbnail image} {Tiny groundbased coronagraph image} {Tiny pseudo-continuum solar photospheric thumbnail image}

(Above) Latest solar images, from various telescopes and spacecraft. Click on them for more detail.

PHYS 150 Astrophysics
MW 4:00-5:15 p.m. in both virtual asynchronous mode.

2021 Spring Course Syllabus:
Please read carefully. 		Instructor: Professor Ringwald
E-mail: ringwald[at]csufresno.edu and replace [at] with @
Phone: (559) 278-8426
Office hours (via Zoom, email, or phone, between January 21 and May 6):
MoTuWeTh 5:30-7:00p.m.


Course description: (3 credits) Prerequisite: PHYS 4C. Introduction to celestial mechanics, spectral classification, stellar atmospheres and interiors, star formation and evolution, variable stars, neutron stars, pulsars, black holes, the nature of galaxies, and the expansion of the Universe.

Required texts, which should be available in Kennel Bookstore:

Recommended texts:

Course objectives:
(1) To introduce physicists to interesting problems
(2) To provide teachers with "whys" for their introductory astronomy classes
(3) To prepare astronomers (professional and amateur) for the research problems of the future

TENTATIVE list of chapters to be covered (updated 2021 May 3):
Week
Date
Chapter
Date
Chapter
1 1/18
-
Holiday (Martin Luther King Day) 1/20
-
No class
2 1/25
1
 Introduction and Units 1/27
1, 2
 Units, Powers of Ten, Light-Years, and Look-Back Time
3 2/01
1, 2
 Parallax, Parsecs, and the Cosmic Distance Ladder 2/03
1, 2
 Possible Sources of Information about the Universe, including the electromagnetic Spectrum
4 2/08
1, 2
 Telescopes 2/10
1, 2
 More on resolution; Introduction to Radiative Processes and Spectra
5 2/15
-
Holiday (Presidents' Day) 2/17
3
Radiative processes: thermal/blackbody/Planck radiation
6 2/22
4, 5
 Radiative processes: the H atom and line radiation 2/24
3
 Gravity and Celestial Mechanics
7 3/01
4.3.6
The Virial theorem 3/03
4
The Sun as a Star
8 3/08
9
Energy Generation in Stars; Take-Home Mid-Term Exam 1 sent out. 3/10
1-6
Nuclear Energy and Synthesis of the Elements; Take-Home Mid-Term Exam 1 due.
9 3/15
7-9
 Nucleosythesis and Stars: magnitudes, colors, spectral types 3/17
10
Stars: spectral types, luminosity classes, and the Hertzsprung-Russell Diagram
10 3/22
11-12
Star formation, massive stellar evolution, supernovae, white dwarfs, and neutron stars 3/24
10-12
Hydrostatic Equilibrium, the End States of Stars, and Black Holes
- 3/29
-
Spring Break 3/31
-
Spring Break
11 4/05
12
Exoplanets and the Solar System 4/07
12
The Solar System
12 4/12
13-15
 "Ultimate Address," the Expansion of the Universe, and Cosmology 4/14
12
-
13 4/19
12
 - 4/21
13
 -
14 4/26
12
Take-Home Mid-Term Exam 2 emailed out on 4/26. 4/28
13
 Take-Home Mid-Term Exam 2 due on Friday, 4/30.
15 5/03 - - 5/05 - -

Course grades will be awarded for the following final percentages:
85.0-100% = A; 70.0-84.9% = B; 55.0-69.9% = C; 40.0-54.9% = D; 0-39.9% = F.

These percentages will be computed with the following weights:

25% Mid-Term Exam 1 (take-home, due by email by 11:59 p.m. on 3/10).
25% Mid-Term Exam 2 (take-home, due by email by 11:59 p.m. on 4/30).
50% Final Exam (take-home, due by email by 11:59 p.m. on 5/13).

Sorry, but Professor Ringwald doesn't give make-up exams. If any student cannot complete any of the take-home exams by the due date and time for a valid reason (job interview, illness documented by a physician's note), that student's grade for that exam will be voided and the remainder of the grade counted as 100%.

Course web page: http://zimmer.csufresno.edu/~fringwal/phys150.html

There are no computing prerequisites or lab for this course, so the emphasis will be on pencil-and-paper theory. Spring semester is the bad-weather time of year for Fresno, so observing will not be an official part of this class, although observing opportunities may be announced during the semester if they arise.

Whenever doing homework problems, be sure to show all work and write the correct units, or else points will be deducted. Also make sure to write the correct number of significant digits, also called significant figures: this error looks bad, and writing more than two excessive digits will be grounds for one point being deducted, for each instance.

Too many students treat doing their homework and their assigned readings as dreadful chores. Please remember that astronomy is an elective course and a competitive profession. If working the homework problems and doing the readings isn't fun for you, something is wrong.

  • Students with Disabilities: Upon identifying themselves to the instructor and the university, students with disabilities will receive reasonable accommodation for learning and evaluation. For more information, contact Services to Students with Disabilities in the University Center Room 5 (559-278-2811).

  • Honor Code: Members of the California State University, Fresno academic community adhere to principles of academic integrity and mutual respect while engaged in university work and related activities. Students should:

    (a) understand or seek clarification about expectations for academic integrity in this course (including no cheating, plagiarism and inappropriate collaboration)

    (b) neither give nor receive unauthorized aid on examinations or other course work that is used by the instructor as the basis of grading.

    (c) take responsibility to monitor academic dishonesty in any form and to report it to the instructor or other appropriate official for action.

    Instructors may require students to sign a statement on exams and assignments that “I have done my own work and have neither given nor received unauthorized assistance on this work."

  • Cheating and Plagiarism: Cheating is the actual or attempted practice of fraudulent or deceptive acts for the purpose of improving one's grade or obtaining course credit; such acts also include assisting another student to do so. Typically, such acts occur in relation to examinations. However, it is the intent of this definition that the term 'cheating' not be limited to examination situations only, but that it include any and all actions by a student that are intended to gain an unearned academic advantage by fraudulent or deceptive means. Plagiarism is a specific form of cheating which consists of the misuse of the published and/or unpublished works of others by misrepresenting the material (i.e., their intellectual property) so used as one's own work. For more information on the University's policy regarding cheating and plagiarism, refer to the Class Schedule (Legal Notices on Cheating and Plagiarism) or the University Catalog (Policies and Regulations).

  • Computers: At California State University, Fresno, computers and communications links to remote resources are recognized as being integral to the education and research experience. Every student is required to have his/her own computer or have other personal access to a workstation (including a modem and a printer) with all the recommended software. The minimum and recommended standards for the workstations and software, which may vary by academic major, are updated periodically and are available from Information Technology Services (http://www.fresnostate.edu/adminserv/technology/) or the University Bookstore. In the curriculum and class assignments, students are presumed to have 24-hour access to a computer workstation and the necessary communication links to the University's information resources.

  • Disruptive Classroom Behavior: The classroom is a special environment in which students and faculty come together to promote learning and growth. It is essential to this learning environment that respect for the rights of others seeking to learn, respect for the professionalism of the instructor, and the general goals of academic freedom are maintained. Differences of viewpoint or concerns should be expressed in terms which are supportive of the learning process, creating an environment in which students and faculty may learn to reason with clarity and compassion, to share of themselves without losing their identities, and to develop and understanding of the community in which they live. Student conduct which disrupts the learning process shall not be tolerated and may lead to disciplinary action and/or removal from class.

  • Copyright policy: Copyright laws and fair use policies protect the rights of those who have produced the material. The copy in this course has been provided for private study, scholarship, or research. Other uses may require permission from the copyright holder. The user of this work is responsible for adhering to copyright law of the U.S. (Title 17, U.S. Code). To help you familiarize yourself with copyright and fair use policies, the University encourages you to visit its copyright web page: http://www.fresnostate.edu/home/about/copyright.html. For copyright Questions & Answers: http://libguides.csufresno.edu/copyright

  • Other astronomy courses at Fresno State include:

  • This syllabus and schedule are subject to change in the event of extenuating circumstances, such as pandemics. If you are absent from class, it is your responsibility to check on announcements made while you were absent.



    Here is a list of all videos of Phys 150 classes and PowerPoints available to students, along with additional readings the students should do within of week of when they are made available:


    Monday, January 25:



    Wednesday, January 27:



    Monday, February 1:



    Monday, February 8:







    Monday, March 1:







    Monday, March 8:



    Wednesday, March 24:







    Tuesday, April 20:







    Sunday, April 25:







    Sunday, May 2:





    Go to Professor Ringwald's home page. Last updated 2021 May 10.
    Webpage by Professor Ringwald (ringwald[at]csufresno.edu and replace [at] with @)
    Department of Physics, California State University, Fresno. Please read this disclaimer.