×

Let's log you in.

or

Don't have a StudySoup account? Create one here!

×

or

physnotesweek7.pdf

by: Sophie Stella

24

1

2

physnotesweek7.pdf PHYS 104-01

Sophie Stella
UST

Get a free preview of these Notes, just enter your email below.

×
Unlock Preview

These are the notes for the seventh week of PHYS 104: Astronomy with Dr. Ruch
COURSE
Astronomy
PROF.
Dr. Ruch
TYPE
Class Notes
PAGES
2
WORDS
KARMA
25 ?

Popular in Astronomy

This 2 page Class Notes was uploaded by Sophie Stella on Sunday April 3, 2016. The Class Notes belongs to PHYS 104-01 at University of St. Thomas taught by Dr. Ruch in Winter 2016. Since its upload, it has received 24 views. For similar materials see Astronomy in Astronomy at University of St. Thomas.

×

Reviews for physnotesweek7.pdf

×

×

What is Karma?

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 04/03/16
PHYS 104: Astronomy Week 7 Course Notes, 3/14 – 3/18 Definitions Spectrum: Achart graphing the intensity vs. the wavelength of a beam of visible light. Thermal Emission: Everything with a temperature emits light. Frequency: The number of periods of a wavelength in a given time. F=v/λ Blackbody: Acurve based on a spectrum graph, but also containing other forms of non-visible light. λmax: Maximum relative wavelength of an object. Imax: Maximum relative intensity of an object. Emission lines: Lines of color in a spectrometer, which show the colors of photons being emitted from an object. IX. Light A. What light can tell us about far away objects: 1. Temperature 2. Size (sometimes) 3. Composition 4. Radial Velocity B. Aspects of light 1. Light behaves both like a wave and like a particle. 2. “Color” refers to the frequency or wavelength of light. 3. Asingle photon (light particle) has a specific wavelength (frequency/color). 4. Intensity is based on the number of photons. a. Temperature intensity determines color C. Wein's Law 1. λmaxT=constant (Lambda max times the Temperature is constant) a. This means we can remotely measure temperature based on the color of an object. 2. Imax=AσT^4 (I max equals theArea times a constant times the Temperature^4) b. This allows us to remotely measure the size, given the intensity and temperature. λmax Imax When the radius increases: constant increases When Temperature increases: decreases increases D. Blackbodies 1. Are perfect absorbers and perfect emitters of light 2. Perfect blackbodies do not exist. • CurveA is hotter • Curve B is bigger • Curves have the same intensity E. Emission lines 1. Each gas has its own unique composition. The colors emitted through a spectrometer are unique to each different composition of gasses. If one looks at the colors emitted by an unknown gas, one would be able to tell the composition.

×

25 Karma

×

×

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over \$500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Bentley McCaw University of Florida

Forbes

"Their 'Elite Notetakers' are making over \$1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!
×

Refund Policy

STUDYSOUP CANCELLATION POLICY

All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email support@studysoup.com

STUDYSOUP REFUND POLICY

StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here: support@studysoup.com

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to support@studysoup.com