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The artist Joseph Pennell created a poster for the fourth Liberty Loans campaign of 1918, during World War I, showing the statue headless and torchless, while around her the New York area was in flames, under attack by air and by sea. The poster is sometimes referred to as "That liberty shall not perish", after the first words that appear on it.
A magnet's magnetic moment (also called magnetic dipole moment and usually denoted μ) is a vector that characterizes the magnet's overall magnetic properties. For a bar magnet, the direction of the magnetic moment points from the magnet's south pole to its north pole, [ 15 ] and the magnitude relates to how strong and how far apart these poles ...
Housed in a 19th-century former gristmill, The Boston Globe called it "a magnet for bibliophiles from the nearby Amherst-Northampton Five College area". [3] In 2005, the Globe devoted an entire article to the bookstore, quoting the owner as saying, "We're not particularly convenient, we're not particularly efficient, but we're beautiful."
A very common source of magnetic field found in nature is a dipole, with a "South pole" and a "North pole", terms dating back to the use of magnets as compasses, interacting with the Earth's magnetic field to indicate North and South on the globe. Since opposite ends of magnets are attracted, the north pole of a magnet is attracted to the south ...
Terry Sejnowski is laboratory head of the computational neurobiology laboratory at the Salk Institute for Biological Studies and the author of ChatGPT and The Future of AI. What a self-aware ...
Ferromagnetism (along with the similar effect ferrimagnetism) is the strongest type and is responsible for the common phenomenon of everyday magnetism. [1] An example of a permanent magnet formed from a ferromagnetic material is a refrigerator magnet. [2]
Overhead magnets, magnetic pulleys, and the magnetic drums were the methods used in the recycling industry. [1] Magnetic separation is also useful in mining iron as it is attracted to a magnet. [3] Another application, not widely known but very important, is to use magnets in process industries to remove metal contaminants from product streams. [1]