Street-Fighting Physics!â€‹

**Week 3 01-05 February**

**Week 3 01-05 February**

**(1) Pages 26 - 34 **

**Scale of the Universe**

**This lecture gets us into the topic of "Lookback time," and is covered in Chapter 2 in the text. **

**There will be a graded homework assignment in "Launchpad" that goes with this.**

**After completing the above lecture, the video below should be more relevant. Note the distances cited on the left-hand side of the screen and how they are expressed in terms of light speed and "look-back time." Most of the images you will see are actual photos with very little CGI, except at the very end.**

**(2) Required viewing**

**History**

**The following topics are also covered in Chapter 2 in the text. If we are to understand our current concept of the Universe, it's essential to know how we got here. **

**Yeah, history IS important!**

**(3) Page 35**

**(4) Page 36**

**(5) Page 37**

**(6) Page 38**

**Further content on these topics:**

- Home
- PHYS 110 Syllabus
- PHYS 110 Sapling Student Login
- PHYS 110 Workbook PDF
- PHYS Weekly Lectures
- PHYS Week 1 Lectures Scientific Notation
- PHYS Week 2 Lectures Metric System, Terms, Conversions
- PHYS Week 3 Lectures Scale of Universe, the Atom, History
- PHYS Week 4 Lectures Scientific Method, Volume, Mass Density
- PHYS Week 5 Lectures Vectors, Trig
- PHYS Week 6 Vector Analysis
- PHYS Week 7 Vector Analysis, Lab

- ASTR 100 Syllabus
- ASTR Student Sapling Login
- ASTR Student Launchpad Login
- ASTR 100 Lab Manual PDF
- ASTR Weekly Lectures
- ASTR Week 1 Lectures - Dark Matter, Dark Energy
- ASTR Week 2 Lectures Scientific Notation
- ASTR Week 3 Lectures Astronomic Scales, History (1)
- ASTR Week 4 Lectures Brahe, Kepler, Newton, Gravity
- ASTR Week 5 Lectures Special Relativity
- ASTR Week 6 Lectures General Relativity
- ASTR Week 7 Lectures Star Formation

- ASTR - Galileo's Sketches
- Space Travel Posters
- How Large Is the Universe?

- Home
- PHYS 110 Syllabus
- PHYS 110 Sapling Student Login
- PHYS 110 Workbook PDF
- PHYS Weekly Lectures
- PHYS Week 1 Lectures Scientific Notation
- PHYS Week 2 Lectures Metric System, Terms, Conversions
- PHYS Week 3 Lectures Scale of Universe, the Atom, History
- PHYS Week 4 Lectures Scientific Method, Volume, Mass Density
- PHYS Week 5 Lectures Vectors, Trig
- PHYS Week 6 Vector Analysis
- PHYS Week 7 Vector Analysis, Lab

- ASTR 100 Syllabus
- ASTR Student Sapling Login
- ASTR Student Launchpad Login
- ASTR 100 Lab Manual PDF
- ASTR Weekly Lectures
- ASTR Week 1 Lectures - Dark Matter, Dark Energy
- ASTR Week 2 Lectures Scientific Notation
- ASTR Week 3 Lectures Astronomic Scales, History (1)
- ASTR Week 4 Lectures Brahe, Kepler, Newton, Gravity
- ASTR Week 5 Lectures Special Relativity
- ASTR Week 6 Lectures General Relativity
- ASTR Week 7 Lectures Star Formation

- ASTR - Galileo's Sketches
- Space Travel Posters
- How Large Is the Universe?