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Welcome to Science 71

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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Welcome to Science 71

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  1. January 27, 2010 (#92) Need: Books/Notebooks Welcome toScience 71

  2. 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.

  3. 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.

  4. 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

  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?

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

  7. 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.

  8. 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.

  9. 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?

  10. 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

  11. 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

  12. Nanotechnology The biggest science initiative since the Apollo program

  13. 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!

  14. Hard Disk Drives - a home for bits Hitachi

  15. “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

  16. 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)

  17. 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!

  18. Solar Cells Benefit: Sun is an unlimited source of electronic energy. Konarka

  19. A new form of Lighting - OLED

  20. 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.

  21. 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?

  22. 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

  23. 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

  24. Calculating Large Binary Numbers Try to figure out your birthday Year! Bonus question at bottom of paper.

  25. 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!

  26. 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/

  27. Extra Video on How Magnets Are made

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