Class Notes (891,631)
US (345,561)
SFSU (172)
ASTR (4)
ASTR 115 (4)
Lecture 6

# ASTR 0115 Lecture 6: 929AstronomyNotes

5 Pages
57 Views

Department
Astronomy
Course Code
ASTR 115
Professor
Mc Carthy, Christopher

This preview shows pages 1 and half of page 2. Sign up to view the full 5 pages of the document.

#### Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah â€” University of Toronto

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim â€” University of Michigan

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna â€” University of Wisconsin

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne â€” University of California
Description
929 Notes Spectrometers measure colors by determining how much light of each color of light is received. Doppler Effect: Applications The Doppler Effect can be used to measure if something is in motion and how fast it is moving Police: Speeding Tickets Weather : Doppler RAdar Astronomy : Motions of stars including planet detection. Chapter 4 Summary Wiens Law: Measure Temperature Bohr model Atoms And Light How a spectrum is formed Doppler : Effect: Measure motion Chapter 5: The Sun Our Star The Sun: Our Nearest Star The Sun is a star Because it is so close, its very bright We can apply what we learn about the Sun to other stars. The Sun is an ordinary star Some stars are larger, some smaller Some stars are brighter, some dimmer Some stars are older, some younger Suns General Properties It is 109 times larger than Earth 330,000 times Earths mass Consists entirely of gas Surface temperature = 5800 K Central temperature = 15 million K Composition of The Sun The sun is a plasma an extremely hot gas The atoms electrons are ionized stripped away from the nucleus The sun is made mostly of Hydrogen (~70) Helium (~30) To study the sun we consider its interior and its atmosphere The Outer Parts of the Sun The outer layers of the Sun are called the Suns atmosphere. It is usually divided into the 3 layers The photosphere is the layer we see The chromosphere is just above the photosphere
More Less
Subscribers Only

Only pages 1 and half of page 2 are available for preview. Some parts have been intentionally blurred.

Unlock Document
Subscribers Only

Unlock to view full version

Unlock Document
Subscribers Only
Notes
Practice
Earn
Me

OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Join to view

OR

By registering, I agree to the Terms and Privacy Policies
Just a few more details

So we can recommend you notes for your school.

Get notes from the top students in your class.

Request Course
Submit