(Don't Use Canvas to contact me, use email link)
Office: LD 156-S, 278-9244
Class: Lectures are pre-recorded, no formal Zoom during Tues and Thurs, 10:30 am - 11:45 am
http://woodahl.physics.iupui.edu/Astro105
Is the University open/closed today?
Evidence for the Big Bang Theory: Penzias and Wilson and their Microwave Antenna
Spectrum of Microwave Radiation Closely Matches Big Bang Theory
"High-Tech" Big Bang Detector in Your Home: Snowy Channel on an Antenna-Fed TV (1% is CMBR)
Gravity: Binds Objects with Mass (Motorcycle's Front Wheel Overcomes Gravity)
Electromagnetic: Binds Electrons to Protons to Form Atoms (Beryllium Atom)
Strong: Binds Quarks to Form Protons, Neutrons, and Nuclei (Helium Nucleus)
Note: Canvas does not correctly apply the weightings (it only reports your scores on the course components). Take Exam 1 raw score and divide by 30 and then multiply by 100%. Then take the Exam 2 raw score and divide by 30 and then multiply by 100%. Take both exam scores, add them, and divide by 2 (this will be your exam average percentage). After the Paper scores have been posted (hoping it will be by April 16th), take your Paper score and multiply by 5, this is your Paper score as a percentage. Now we apply the weighting. Exams count for 85% of your grade and your Paper counts for 15%. Take your exam average percentage and multiply by 0.85 and take your Paper percentage and multiply by 0.15, then add the two numbers, that is your current numerical score in the class. Also remember, we drop the lowest score of the three exams.
Exam 2 scores have been uploaded to Canvas. The average was a 24 out of 30 (80%).
A Globular Cluster in Milky Way: Omega Centauri (NGC5139), Visible by Unaided Eye
LSS of Universe: Clusters & Superclusters that Neighbor the Milky Way (Near-Infrared Frequencies)
The Jets of Cygnus A (color enhanced, microwave frequencies)
Looking for Quasars and Radio Galaxies: Australia's Telescope Compact Array (ATCA)
"Gamma-Ray Bursters and Cosmological Constant" #22 Video Lecture
Massive Star Collapses Forming Black Hole: Jets Along Rotation Axis Produce Gamma-Ray Long-Burst
Gamma-Ray Short-Burst: Collision Involving Neutron Stars & Black Holes
10 questions/problems, review all your notes
Details posted in Canvas > Announcements
Dark Matter (Imagine that the green/yellow/orange strands are dark and you cannot see them.)
Spiral Structure of Milky Way Galaxy -- possibly a "Barred-Spiral"
Typed, double-spaced, single-sided, and a minimum of one thousand words. Submitted as PDF.
Topics: Pick one topic from the Exam I Study Guide and explain it in detail in your own words.
Make sure you include your full name (upper righthand corner).
Due by 11:59 PM on Friday April 9. No late submittals allowed.
The paper must be emailed as a PDF directly to: bwoodahl@iupui.edu
DO NOT USE CANVAS MESSAGES TO SUBMIT YOUR PAPER.
You will receive a confirmation email from me, verifying I have received it.
BTSOTC: Unruh Radiation and Violation of Equivalence Principle
Schwarzschild: Discovered Event Horizon of Black Hole (Schwarzschild Radius)
General Relativity Allows for Wormhole Solutions for Faster than Light Travel
"Back To The Past": General Relativity Allows for Wormhole Solutions for Time Travel
Edwin Hubble: Determined M31 Was a Galaxy 2 Million Light-Years Away
Exam 1 scores have been uploaded to Canvas. The average was a 24 out of 30 (80%).
An Interstellar Medium Containing Carbon Monoxide (Radio Frequencies)
Atmospheric Scattering of Light: Blue Daytime Skies and Red Dawn
10 questions/problems, review all your notes
Details posted in Canvas > Announcements
Mass Information from Doppler Shift of Spectra from a Binary Star System
Absolute Brightness or Luminosity Versus Apparent Brightness
Traditional H-R Diagram with the Absolute Magnitude Scale (on right-hand side)
The Red SuperGiant Betelgeuse (Hubble): Diameter is Larger than Jupiter's Orbit Around the Sun
Niels Bohr (sitting with Einstein): Architect of Modern Theory of Atomic Physics
Photon (wavy line) Being Absorbed by Atom -> Electron (solid blue line) Jumps Up into Higher Orbit
Atom Emitting a Photon (wavy line) -> Electron (solid blue line) Jumps Down into Lower Orbit
"Parallax Formula and Surface Temperatures" #7 Video Lecture
Stars with Higher Surface Temperatures Emit Mostly Shorter Wavelengths
The 4 Fundamental Forces Occur Only at Moderately Low Temperatures
Sun's Proton-Proton Chain Fusion Reaction (4 Protons Produce Helium + Energy)
Ray Davis, 2002 Nobel Prize in Physics for the Detection of Cosmic Neutrinos During 1960's
Quarks Fundamental Particles, Three Quarks in Every Proton and Neutron
Einstein (in 1904): Speed Of Light is the "Speed Limit of Our Universe"
Visible Light is a Small Part of the Entire Electromagnetic Spectrum
Isaac Newton (in 1670): White Light Contains All the Visible Colors (Visible Frequencies)
James Maxwell (in 1860): Father of the Famous Maxwell Equations Governing the Behavior of Light
Astronomy, the Oldest of the Sciences, 5000 Years Old: Stonehenge
Approaching Modernity: Galileo Galilei's 1610 AD Notebook Page (Who Needs Computers?)
"Kelvin & Helmholtz Theory, Sun's Exterior" #2 Video Lecture
Magnetic Field Lines "Trap" Moving Charged Particles (Thus They Spiral)
Coronal Mass Ejection (Orange Disc is Photosphere, Red Disc is Chromosphere, X-Ray Photography)
Exam 1: Tuesday, March 9th (10:30 am to 11:45 am)
Exam 2: Tuesday, April 6th (10:30 am to 11:45 am)
Paper due: Friday, April 9th at 11:59 PM
Exam 3 (subject to change): Thursday, April 29th (10:30 am to 11:45 am)
Exams (Using the best 2 out of the three): 85 %
Paper: 15 %
Three exams (none are comprehensive).
Approximately 10 partial-credit questions/problems. Study guides will be posted about a week before the exam.
Scores will be posted online to Canvas (exams are not returned to students).
Students need not take last exam, if they are satisfied with their scores on the first two exams.
Typed, double-spaced, single-sided, and a minimum of one thousand words. Submitted as PDF.
Topics: Pick one topic from the Exam I Study Guide and explain it in detail in your own words.
Make sure you include your full name (upper righthand corner).
Due by 11:59 PM on Friday, April 9th. No late submittals allowed.
The paper must be emailed as a PDF to: bwoodahl@iupui.edu
You will receive a confirmation email from me, verifying I have received it.
If you did not receive an email from me -- I never received your paper!
Standard grading percentages are employed (~70% and above is C range, ~80% and above is B range, ~90% and above is A range).
Plus and minus grades are assigned, but the breaks on these are determined by score groupings.
There is (unadvertised) curving on the C range and to a lesser degree, some curving on the B range.
Check here ( http://woodahl.physics.iupui.edu/Astro105MW/ ) for the latest information regarding our particular class cancellation(s)
Weather related cancellations will be announced on this page -- Please do not email me asking if class has/will be cancelled
Many thanks to Ryan Bertram (Astro A100 student), who introduced me to this neat YouTube video (courtesy of Rob Bryanton, Canadian author) that discusses the ten possible dimensions of our universe.
Many thanks to Tim McCormick (Astro A100 student), who introduced me to this fantistic webpage that models early solar system formation.
Many thanks to Elizabeth Potter (Astro A105 MW student), who showed me this neat webpage highlighting the relative sizes from the Local Group down to Quarks (and the corresponding orders of magnitude, or powers of ten)
Department of Physics, IUPUI - Updated on April 14, 2021 at 1:07 PM EDT
