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TODAY IN HISTORY

    SOURCES OF ALL ENERGY
    September 1, 1881 - York, Sir, England

    In a Presidential Address to the British Association, at York, Sir William Thomson (Lord Kelvin) spoke On the Sources of Energy in Nature Available to Man for the Production of Mechanical Effect. He summarized the natural sources of energy as Tides, Food, Fuel, Wind, and Rain. All except the tides derive energy from the sun. “Heat radiated from the sun ... is the principal source of mechanical effect available to man.” He referred to tide mills, and the possibility of storing energy in batteries between tides, but nevertheless considered the economics impractical for wide application. Windpower he considered “decadent,” but acknowledged coal would become an exhausted resource, thus windmills should generate electrical power. Kelvin also outlined the economics of hydroelectricity.

    PASSENGER PIGEON
    September 1, 1914 - American, U.S.A.

    The Passenger Pigeon (Ectopistes migratorius) became extinct as the last surviving bird of the colorful native American species of dove died at the Cincinnati Zoo. The passenger pigeon was hunted to extinction; the fact that it traveled and nested in large flocks made it easy to slaughter. The adult male passenger pigeon had grey upper parts, the tips of the wings and the tail were black; its throat was a dark rust, while its breast was a lighter rust; its eyes were red. The adult female was of a duller color, with brownish upper parts and a lighter, brownish throat and breast; its eyes were black.

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The article concentrates upon digital music downloads, in particular online music download options, including the cost, the listening rights, audio format and quality of downloads.

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There are a great many online services that offer online music. Some sites charge per online music download, whereas other services offer to pay a monthly fee for a limitless number of music downloads. It has been estimated that compact disc sales are in decline (19% in the last few years), and online music download sales are speedily increasing. Revenues from digital music sales are reported to have virtually tripled last year, with Apple's iTunes accounting for more than 85 percent of single song downloads. Nevertheless, the figures do not make Apple the sole source of digital music. Today, legal music download sites account for approximately 6% of record studios' revenues, which is a growth compared to the situation observed a couple of years ago.

Music download sites come in two types: 'rent' and 'buy' websites. 'Rent' sites are music sites involving a monthly fee paid to gain access to the whole music catalogue. 'Buy' services charge per download - iTunes, for example - where a soundtrack can be burned onto a CD once it is paid for. The CD can then be ripped to the pc. Some digital music services offer to pay a monthly fee for limitless listening rights, but also charge to purchase a song. Some digital music download sites charge 9 cents per track. In addition, these sites have tracks that can be downloaded in any format and quality level.

Sometimes music download websites are so cheap and user-friendly that a great many Internet users decide to download songs from these websites instead of ripping CD collections onto the personal computer. For any person downloading songs onto an iPod or iTunes, it is probably the optimum option. For any music not being downloaded onto an iPod, any other music source will work. When seeking the optimum quality music downloads, one should look for music download websites offering the largest choice of music that is updated on a regular basis, and excellent quality downloads. Commonly, the price is directly dependent on quality. In this case, a question arises: Is it worth spending extra money? The answer is typically 'Yes'.

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