1. Previous Class: This Class: Phys 1830: Lecture 5 Angular Size
Class site:
Phys 1830: Lecture 5
Worried about the math?
-- OPUS (Organization of Physics Undergraduate Students) can tutor! Find them on the tunnel level of the Allen Physics Building.
-- Tutors available (talk to Dr. English)
Previous Class:
Angular Size
Linear measurements (ex. Diameter) Define distance units (AU)
Powers of Ten notation
This Class:
continue with Powers of 10
Quiz
Password- will change Monday.
Add/Drop date Monday.
Next Classes:
Near Earth Objects
Definition of Parsec
Distance via Parallax
Distance via the Inverse Square Brightness Law
Light and Electromagnetic Radiation
The interaction between atoms and light
If you joined the class late then to register your iclickers the following:
your iclicker number
your student number
your name
ALL NOTES COPYRIGHT JAYANNE ENGLISH
The state of the affairs from the previous class is that we measure arcs on the sky.
If you want to learn math, check out
Planetarium info later today.

2. Set frequency of iclicker to base unit:
Set up iclickers:
While waiting, talk about how you would define the edge of the solar system. How far away do you think that edge is?
Set frequency of iclicker to base unit:
Hold down power on/off button until it blinks.
Press A, then press A.
Bottom light should flash green.
Use your iclicker even if it has yet to be registered!

3. Test Iclickers (igrader)
I heard about astronomy courses at Info Days
a) true
b) false
I heard about astronomy courses from acquaintances
a) true
b) false
I discovered astronomy courses by surfing Aurora
a) true
b) false

4. Quiz!
The quiz was
easy
moderate
hard

5. Powers of Ten by Ray and Charles Eames.