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January 27, 2010 (#92) Need: Books/Notebooks. Welcome to Science 71. Objective. Continue to Build a better understanding of Electric and Magnetic Field behaviors Connection between Magnetic Fields and the Earth as well as Technology

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Presentation Transcript
objective
Objective
  • Continue to Build a better understanding of Electric and Magnetic Field behaviors
  • Connection between Magnetic Fields and the Earth as well as Technology
  • Describe the relationships among the three components of electricity.
homework
Homework
  • For those of you that find this topic interesting, at the conclusion of today's lesson, there will be some extensions you can pursue in learning more about Magnetic Fields, Reversals, and maybe, a touch of SciFi regarding 2012.
agenda based upon priority
Agenda – Based upon Priority
  • Yearbook Survey
  • Modern Marvels Renewable Energy P5
  • Bell Work Questions
  • Connecting Renewable Energy to Magnetic Fields
      • History of the Earth – PaleomagnetismFINISH
      • Technology – Cracking the Code (Binary Code)
  • How are Magnets Made
  • Magnetic Fields Continued
  • Continue Who killed the electric car?
  • Work on Building Layer
  • For those done, National Geographic Article. Read, Review, Summarize, Comment
modern marvels part 5
Modern Marvels Part 5

Enjoy today’s Problem of the Day Video!

  • Observe any and all of the jobs presented in the video
  • What are the benefits to this type of renewable energy?
  • What are the disadvantages?
  • What countries seem to be more interested in them?
bell work
Bell Work

Looking at the most recent video, what are your thoughts on this type of renewable energy?

bell work1
Bell Work

Are there any areas in the USA that you think would/could benefit from such a Renewable Energy Source?

C.

B.

A.

E.

D.

introduction to another code
Introduction to another Code

Binary Code.

  • First introduced in the 11th century –Shau Yong-philosopher (Not used in math)
  • 200BC – Indian writer Pingala-develops binary numeral system
  • 1605 – Francis Bacon created a system where letters of alphabet could be assigned binary digits
  • Late 1930’s, George Stibitz, working on the “Model K” computer, which calculated using binary addition.
understanding the binary code
Understanding the Binary Code

First, remember that the code (program) originally worked with switches, either turned on (1) or off (0). Only those two figures are used.

So, to begin, we will count, and in counting, we will start with Zero (0).

Number O = Binary Code O

Number 1 = Binary Code 1

Pretty hard huh?

understanding the binary code1
Understanding the Binary Code

Continue on…

Number O = Binary Code 0

Number 1 = Binary Code 1

Number 2 = Binary Code 10

Number 3 = Binary Code 11

Number 4 = Binary Code 100

Number 5 = Binary Code 101

Number 6 = Binary Code 110

Number 7 = Binary Code 111

Number 8 = Binary Code 1000

Number 25 = Binary Code 11001

using binary for letters
Using Binary for Letters

Hex Dec Binary

0 0 0000

1 1 0001

2 2 0010

3 3 0011

4 4 0100

5 5 0101

6 6 0110

7 7 0111

8 8 1000

9 9 1001

A 10 1010

B 11 1011

C 12 1100

D 13 1101

E 14 1110

F 15 1111

  • Using a Hexidecimal and Decimal System combined with Binary we can get letters
slide12

Nanotechnology

The biggest science initiative since the Apollo program

slide13

20 GB

40 GB

10 GB

2001

2002

2004

Hard drive

Magnetic data storage

80 GB

160 GB

2006

2007

Example: Data storage capacity of the iPod

Uses nanotechnology!

slide15

“Read”

Head

Signal

0

0

1

0

1

0

0

1

1

0

_

_

“Bits” of

information

Magnetic Data Storage

A computer hard drive stores your data magnetically

“Write”

Head

current

S

N

Disk

N

S

direction of disk motion

slide16

coil

Perpendicular

Write Head

Granular Media

Soft Magnetic UnderLayer (SUL)

• CHM Goal: Make "perfect" media

using self-assembled nano-templates

• Also, making new designs for storage

Improving Magnetic Data Storage Technology

  • The UMass Amherst Center for Hierarchical Manufacturing is working to improve this technology

1 bit

Y. Sonobe, et al., JMMM (2006)

slide17

20 GB

40 GB

10 GB

2001

2002

2004

Hard drive

Magnetic data storage

80 GB

160 GB

2006

2007

So, how does Apple get more storage?

By Making the Magnets Smaller!!

Uses nanotechnology!

solar cells
Solar Cells

Benefit: Sun is an unlimited source of electronic energy.

Konarka

classroom activity
Classroom Activity
  • Using the Homemade “Reader Heads,” Walk around the room with a partner or two and collect answers to questions that have answers given in binary code. Most answers will be in Number form.
  • Use the code on the top of the reader, and collect answers to your papers.
  • There are only 10 questions.
question to the class
Question to the class

So, if you needed to know the Binary Number for say…

2010, could you figure it out?

Would it take a long time?

Is there an easier way?

calculating large binary numbers
Calculating Large Binary Numbers

First, start off by figuring out powers of 2

20 = 1

21 = 2

22 = 4

23 = 8

24 = 16

25 = 32

26 = 64

27 = 128

calculating large binary numbers1
Calculating Large Binary Numbers

Secondly, we will create an equation that we can build on to, as well as modify.

Binary Number 1001 = 9

Place holder 3210

[_ x 23] + [_ x 22] + [_ x 21] + [_ x 20]

[1 x 23] + [0 x 22] + [0 x 21] + [1 x 20]

[8] + [0] + [0] + [1] = 9

calculating large binary numbers2
Calculating Large Binary Numbers

Try to figure out your birthday Year!

Bonus question at bottom of paper.

slide25

Perhaps one of the “most interesting things about magnetic fields, is the age to which students are given a chance to really learn about them!"

Notice the name on the poster to the right

Notice that guy and his name, that would be 1992, 8th Grade!

homework1
Homework
  • Please check out the teams website for further studies and ideas regarding the chance that the planet’s magnetic field is in the process of reversing, or just preparing to strengthen again.
  • http://homeworkteam71.wikispaces.com/
extra
Extra

Video on How Magnets Are made