1. Set-2 A Very Boring Lecture**
Some Tools for Later
** Sorry about that

2. Read the rest of chapter 1 Read pages 288 - 294
Where Are We??
Read the rest of chapter 1
Read pages

3. Don’t be offended if you already know this stuff.
Two Useful Topics
Scientific Notation
Converting Units
Don’t be offended if you already know this stuff.
Feel free to take a nap.

4. An Atom
~ Meters
9 zeros after the decimal point !!

5. Dersgoddabeabedderway
Datsalottazeros!
~ Meters
Dersgoddabeabedderway
And there is!
Scientific Notation is a way to get rid of most of those zeros.

6. Do you remember?
The Exponents Add!

7. The Sequence
20=1
21=2
22=4
23=8
24=16
25=32
1,2,4,8,16,32, …….
Interesting but would be better
if we only had one finger on
Each hand!

8. Counting in BINARY

9. Which is better for counting?

10. This works for other “bases”

11. You use what you have … 5 fingers on each hand. 2 hands
Toes are inaccessible
2 X 5 = 10
Lets look at “base” 10

12. “Base” 10

13. Some of the numbers
Nicer !

14. A real number {
Scientific Notation
6 Zeros

15. What about decimals?
ONE
ONE

16. So..
4 places after
The decimal
point
First non-zero
digit

17. Powers of 10 (meters)

18. What’s it all about?? http://www.youtube.com/watch?v=41gWUkVQ-9U
Powers of 10
PowerPoint Version also available.

19. Does Scientific Notation have any use in music??
Indeed !

20. The Path of Music

21. The Path of Music

22. “Loudness” increases with Back and forth movement of the eardrum.
brain
“Loudness” increases with
The AMPLITUDE of the
Back and forth movement of the eardrum.

24. More on Loudness later in the semester

25. Last Topic in this Set UNIT CONVERSION
We need to convert days to seconds
How many seconds are there in 2 days?
What do we know?
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds

26. Trick: Keep multiplying by unity!
“Days” cancel;
Trick: Keep multiplying by unity!

28. So now you know ….if you didn’t know before.
Scientific Notation
Graphs
Unit Conversions
Note: WebAssign HW