Presentation Transcript

1. The Magnet Lab:Magnets Is What We Do!

   Carlos R. Villa & Jose Sanchez National High Magnetic Field Laboratory
2. NHMFL Overview One of three national labs in the Southeast U.S. One of twelve high magnetic field labs in the world Only one in western hemisphere Largest and highest powered in the world
3. NHMFL Overview User laboratory Over 1100 user visits (2010) NSF & State of Florida funded Research free to scientist Research in many fields (Not just magnets!!) Materials Science, Physics, Engineering, Chemistry, Biology, Biomedical, Geochemistry, Microscopy…
4. Center for Integrating Research & Learning Educational component of NHMFL’s grant RET programs (Make $3600… more on that later) K-12 education outreach 9,000 students visited this school year Professional development Workshops and conferences
5. Center for Integrating Research & Learning Educational component of NHMFL’s grant K-12 education outreach 10,961 students visited this school year Professional development Workshops and conferences Educator’s Club: www.magnet.fsu.edu/education/educatorsclub/signup.aspx facebook.com/MaglabEducation
6. Special Opportunity:RET 2014 RET program 6 weeks in the summer $3600 stipend
7. Proposed RET 2014 Dates: June 16th – July 25th What do you have to do? Complete online application Complete program surveys and submit all research data Send in supporting documents (letter of rec, etc.) What does RET entail? Focuses on Nature of Science Research in areas such as Superconductivity, Electricity & Magnetism, Design/construct research instruments, run samples in EPR or NMR magnets.
8. Logistics and Arrangements Housing Stipend Travel Program is open to Elementary (3), Middle (3) and High (3) School teachers 1 Pre-service teacher position per summer ~60 applicants for 10 positions Focus of the program Nature of Science Inquiry Communicating in science Experimental Design Topics for research Superconductivity Electron Scanning Microscopy Condensed Matter
9. Magnet Review Gauss Measurement of magnetic field Named for Carl Friedrich Gauss Tesla Measurement of larger magnetic fields Named for Nikola Tesla 10,000 Gauss = 1 Tesla
10. Some Magnetic Fields (In Tesla) .03 T .000045 T 3 x10-13 T 1 T 2-3 T Refrigerator magnet: Earth’s magnetic field: Person’s magnetic field: Junkyard magnet: MRI magnet:
11. Some NHMFL Magnetic Fields 9.4 T 21 T 20-35 T 25 T 45 T 100.7 T (First reached on 3/23/2012) NHMFL ICR magnet: Ionic Cyclotron Resonance NHMFL 900 Mhz Nuclear Magnetic Resonance NHMFL resistive magnet NHMFL split cell NHMFL hybrid magnet Resistive and superconducting NHMFL pulse magnet Not continuous field
12. Magnetic Metals Not all metals are magnetic 3 are naturally magnetic Iron Nickel Cobalt
13. Magnetite Fe(II)Fe(III)2O4 Naturally magnetic igneous rock Usually found in marine sands and deserts Largest US deposit in NY (Adirondacks) Lodestone found In Arkansas Different crystalline structure
14. Atomic Theory Atomos Indestructible The atom Proton Neutron Electron
15. Magnetism Motion of electrons create magnetic fields In some atoms, spins cancel out Pauli exclusion Whenever all electrons spin the same direction: magnetic field is produced Magnetic domains In magnets: lined up
16. Permanent Magnets Electrons tend to line up in groups (Domains) Domains reinforce other domains Turn material magnetic Examples: Refrigerator Magnets, Bar Magnets, Magnetite, Horseshoe Magnets, Hematite, etc… Field can be lost Curie Point Electric Current Degaussing Bang It
17. Temporary Magnets Domains temporarily aligned Will keep magnetic field until tampered Examples: Paperclips, scissors, staples, thumb tacks, pins, screwdrivers, refrigerator door, car doors, etc… Anything that is magnetic, but will not keep its field
18. Viewing Field Lines Field viewers Box photo frames Iron filings Use with paper Clean-up can be a mess
19. Drawing Field Lines Seeing fields Bar magnet As many compasses as possible
20. Create A Compass Magnetize an item Allow it to float Must turn freely Needle Petri dish Coffee stirrer Water Permanent magnet
21. Electricity and Magnetism The two are so closely related Where there is electricity, there is a magnetic field Where there is a magnetic field, electricity can be created
22. Creating Magnetism From Electricity Electricity is the movement of electrons Electrons flow in one direction This alignment of electrons creates a magnetic field Similar to electrons lining up in a permanent magnet So every wire carrying electricity has a weak magnetic field around it Coiling the wire concentrates the magnetic field inside the coil
23. Electromagnets Materials Copper wire Iron rod Battery Extensions: 2 batteries In line? Aluminum, wooden rod Will they work?
24. Electromagnets Extensions: Right hand rule Direction of field Poles (Winding direction) Use magnaprobe Variables: Neatness Number of winds Wire gauge Battery strength Temperature
25. Bitter Plates
26. Iron In Our Food Iron in cereal Total Baby food Need a strong magnet Neodymium
27. A special solution of magnetic particles in a colloidal suspension whose flow can be controlled by magnets or magnetic fields. Ferrofluids
28. Ferrofluids Make your own: Oil, petri dish, magnet Please be careful Iron filings: Education Innovations Post Apple Scientific Actual ferrofluids available: Carolina Biological Educational Innovations
29. Cow Magnets Cow Magnets
30. Additional Resources Stop Faking It: Electricity & Magnetism Bill Robertson Driving Force: The Natural Magic of Magnets James D. Livingston
31. Additional Resources http://education.magnet.fsu.edu MagLab Alpha; Science, Optics, & You; other curriculum MagLab audio slideshows RET Program K-12 Programs
32. Before I Forget Business cards Please do not hesitate to contact me with questions, ideas, suggestions, etc…

33. Thank You

    Jose Sanchez sanchez@magnet.fsu.edu 850-645-0033 Carlos R. Villa villa@magnet.fsu.edu 850-644-7191