(Don't Use Brightspace to contact me, use email link)
Office: LD 156-S, 278-9244
Class: ES 2107 on Tues and Thur 10:30 - 11:45
http://134.68.135.8/AstroA1000
Ray Davis Jr, 2002 Nobel Prize in Physics for the Detection of Cosmic Neutrinos (Homestake Detector)
Three Types of Neutrinos (To Make for Six Leptons, Similar to the Six Quarks)
3.5 Billion Year Old Stromatolites Show Microbial Evidence, Including Photosynthetic Microbes
Double-Helix Structure of the Deoxyribonucleic Acid (DNA) Molecule
The Evolution of the Origin of Life (and therefore Evolution)
Liquid Water Can Only Exist on a Planet's Surface in the Habitable Zone
64-Meter Parkes Radio Telescope in Australia Listens for Extraterrestrial Communications
".. If you only knew the power of the BRIGHT side, .. Obi-Wan never told you ..."
Effective Fusion Reaction in Sun: 4 Protons Produce Helium and Energy
80 questions, multiple choice, review all your notes following the Exam 1 material
There is much material to know, please study some amount each day.
Rememberize to bring a #2 pencil
''.. I brought my pencil, gimme something to write on, man ..'' OpScan sheets will be provided, pick one up when you enter
4 questions, multiple choice, review your notes from previous four lectures
4 questions, multiple choice, review your notes from the past five lectures (focus on the most recent 3 lectures)
The Ahnighito Meteorite from Greenland (34 tons), Displayed at New York Museum of Natural History
Nucleus of Comet Vilt-2 Photographed by Spaceprobe Stardust in 2004
Comets Come From Oort Cloud and Kuiper Belt (Previous Image)
Comet SL9 Impacting Jupiter in 1994 as seen from Io (Rendition)
4 questions, multiple choice, review all your notes from the past three lectures
Jupiter's Three Cloud Levels: Ammonia, Ammonium Hydrosulfide, Water
Source of Io's Heat: Elliptical Orbit and Jupiter's Tidal Forces
Saturn's Titan: Nitrogen and Methane Atmosphere (Photo NOT Color-Corrected)
Huygen's Spaceprobe Reveals Some of Titan's Surface Features
In no less than 1000 words, TYPED, submitted as PDF (not Word or txt, etc.) to bwoodahl@purdue.edu, explain in your own words the "Bethe Weizsacker Cycle". Make sure your paper includes a short discussion where you contrast it with the Proton-Proton Chain. Include your full name, the due date is Friday Nov 15th at 5:00 PM. Late submittals are not accepted.
Purdue Indianapolis has released the date/time for our Final
Final Exam: in ES 2110 on Friday, Dec 13 starting at 7:00 PM
Pencil this into your Calendar.
However, I might change it to just an Exam 3 during the last week of lecture
Mars' Orbital Ellipticity: Hemispherical Asymmetry in the Seasons
Water Ice & Trace Amount of Dry Ice in Mars' North Pole Ice Cap During Northern Hemisphere Summer
4 questions, multiple choice, review your notes from last week's lectures
Mars' Ancient Water Erosion by Rainfall: Lack of Small Craters
Evidence for Water Today (Oct 2005) on Mars: High Resolution Picture 1
Evidence for Water Today (Oct 2005) on Mars: High Resolution Picture 2
Evidence for Water Today (Oct 2005) on Mars: High Resolution Picture 3
Evidence for Water Today (Oct 2005) on Mars: High Resolution Picture 4
Images for Water on Mars (Sep 2015): High Resolution Picture 1
Images for Water on Mars (Sep 2015): High Resolution Picture 2
More Evidence: Large Sub-surface Water Lake on Mars (Jul 2018): Image
Venus' Surface Close-Up from Soviet Union's Venera Lander Using an Optical Imager
Atmospheric Scattering of Light: Blue Daytime Skies and Red Dawn
About 70 questions, multiple choice, review all your notes and quizzes
Bring a picture ID card (Driver's License, CrimsonCard, JagTag, Military ID, etc.)
In our normal room, also bring a #2 (HB) pencil (failure to use a pencil results in a zero)
''.. I brought my pencil, gimme something to write on, man ..'' OpScan sheets will be provided, pick one up when you enter
4 questions, multiple choice, review your notes from the last three weeks (this will also help prepare for the exam)
Know everything about light
Know about the fundamental particles (and other aspects of matter)
Understand the distinction between chemical and nuclear reactions
4 questions, multiple choice, review your notes from the past two weeks
Know all about Newton, his Laws of Motion, and his Law of Gravity
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
4 questions, multiple choice, review your notes from the past four lectures
Know the history of Foucault, Galileo, Kepler, Brahe, Copernicus
Know the numbers/info regarding galaxies, and stars in galaxies
Know the motion of Earth's path around Sun (ecliptic plane, perihelion = closest to the sun, etc.) and the seasons
Know about the Moon's motion around the Earth and the phases of the Moon
4 questions, multiple choice, review your notes from last week, know:
The metric prefix names for various powers of ten
Dividing two numbers and obtaining the "order of magnitude"
The number of stars in a galaxy and the number of stars in the observable universe
The speed-of-light in the metric units
Syllabus (PDF). Please print and keep with your notes.
Schedule (PDF). Please print and keep with your notes.
These documents may be changed/updated during the semester. Please check that you have the latest versions.
The TOTAL SOLAR ECLIPSE of 2017 (Monday, August 21st)
A solar eclipse only occurs if the New Moon is about within half a degree of the ecliptic plane (defined by the orbit path of Earth as it travels around the Sun). The Moon's orbital path, around the Earth, is (unfortunately) inclined by about 5 degrees to the ecliptic. Thus, there are only two opportunities each moonth (punning) when the Moon passes through the ecliptic. These points are called the nodes (ascending, descending). The Moon passing through a node is not sufficient, it must pass through the node during the New Moon lunar phase.
About twice a year, during an approximately 45 day window (based upon the orbital speeds of the Earth and Moon), the New Moon is close enough to a node that a solar eclipse can occur. Further complicating the motion, the Moon's orbital plane precesses relative to the ecliptic. Hence, the nodes precess around the ecliptic, completing one rotation about every 18.6 years. In addition, because the Moon's path around Earth is elliptical, during many solar eclipses the angular diameter of the Moon is not large enough to fully cover the Sun. Only when the New Moon is near a node and near perigee (i.e. closest to the Earth), does totality occur. On average, it takes about 400 years for totality to occur again at the same geographical location.
Department of Physics & Astronomy - Updated on November 8, 2024 at 1:02 PM EST