• Work done on a charge by an electric field

    Updated: 2010-01-31 17:34:27
    *1. The problem statement, all variables and given/known data* Find the work done a charge "q" of mass "m" by an electric field of magnitude "E" when it's moved a distance "d" *2. The...

  • Electric car range

    Updated: 2010-01-31 16:35:29
    The EV1 was produced in 1996 and could get up to 150 miles on a single charge, "The NiMH batteries, rated at 77 amp-hours (26.4 kWh) at 343 volts, gave the cars a range of 75 to 150 miles (120 to...

  • Magnetic Tape Gets A Boost

    Updated: 2010-01-26 04:53:16
    Earlier this week, MIT’s Technology Review published a story on a new magnetic tape material which, combined with a novel tape-reading technology, can produce data storage capacities of 35 Tb per cartridge – over 40 times higher than current tape storage systems. The research was conducted at IBM’S Zurich Research Labs in Switzerland, in conjunction with [...]

  • Two Questions (MCQ) from Wave Optics

    Updated: 2010-01-18 06:39:00
    : physicsplus The Physics Site for Success In science one tries to tell people , in such a way as to be understood by everyone , something that no one ever knew before . But in poetry , it's the exact opposite . Paul A.M . Dirac Monday , January 18, 2010 Two Questions MCQ from Wave Optics Here are two questions from wave optics . The first question is meant for testing your understanding of coherent sources and interference while the second one is meant for testing your knowledge of the interference pattern produced by Young’s double . slit 1 Two coherent sources emitting light of wave length λ and amplitude A produce an interference pattern on a screen . The maximum intensity of the interference pattern is I . If the light sources are not coherent but the wave length and amplitude are λ and A respectively , the maximum intensity on the screen will be a I 4 b I 2 c I d I e 2√I At the interference maximum the amplitudes of the light waves get added . Therefore , the resultant amplitude at the interference maximum is A A 2 A The intensity is directly proportional to the square of th e amplitude so that we have I α 4 A 2 Or , I k 4 A 2 i where k is the constant of proportionality

  • More News On Correlated Magnetics

    Updated: 2010-01-15 02:21:03
    You may recall an article I wrote late last year on Correlated Magnetics Research, a company from Alabama who has created and produced what they were calling “programmable” magnets. Since then, I’ve had the chance to play with a number of their prototypes.  I had initially been a little confused as to what the technology was [...]

  • Upcoming Magnetics Training Events In The USA

    Updated: 2010-01-09 16:00:07
    There are a couple of training events coming up in the next month or so, which anyone interested in learning more about the technical aspects of permanent magnets, magnetizing and testing might be interested in attending. The first takes places on the day before the Magnetics Conference in Orlando, Florida, and is being run by Dr. [...]

  • USA Reclaims World Record For Highest Field Resistive Electromagnet

    Updated: 2010-01-08 13:00:09
    The engineers and scientists at the National High Magnetic Field Laboratory [NHMFL] in Florida, announced this week that they had successfully tested a new resistive electromagnet that produces a magnetic field strength of 36 tesla (360 kilo-oersted), breaking the old record of 35 tesla (350 kilo-oersted) previously held jointly between the NHMFL and the Grenoble [...]

  • Making Magnetic Paper

    Updated: 2010-01-07 01:46:50
    Hello folks – Happy New Year! My apologies for the long delay in posting a new article here at Terra Magnetica – let me get things back on track with some news from R & D Magazine, on a new paper-based magnetic material that may have potential for low cost fabrication applications. A team of researchers [...]

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