• Entertainment & Gaming

    A Plastic Bicycle

    By Brett Zarda Posted on 10.7.2008 5 Comments

    Forget the carbon-fiber bike that costs more than your house. How about one made of plastic? The Innervision bike is a design concept by industrial designer Matt Clark that ditches high-cost complex materials for pre-molded plastic parts.

    10.7.2008 at 09:34pm - Comment by steelwolf_sg

    I would like to know the weight of this plastic bike. And why did they choose polypropylene? There are quite a few other plastics, which can be injection moulded and even recycled, that would be much stronger. A complete frame could be moulded with little need to weld the 2 halves together as shown. We just need to move away from our need to have a smooth exterior. Afterall, these bikes are for casual recreational use. We could live with all the ribs on the outside.

  • Science

    I've Heard That The Earth's Rotation Is Slowing. How Long Until Days Last 25 Hours?

    By Jessica Cheng Posted on 9.30.2008 8 Comments

    We could all use an extra hour in the day, but clocks won't need to be extended anytime soon. The time the Earth takes to make a complete rotation on its axis varies by about a millionth of a second per day, says physicist Tom O'Brian of the National Institute of Standards and Technology. While some days are shorter than average, the planet's rotation shows a long-term slowing trend, ultimately leading to a longer day.

    Article Rating:
    10.7.2008 at 09:24pm - Comment by steelwolf_sg

    dodeka is right. OMG! We are going to lose weeks. If we take the basic unit of time as an hour, then currently it takes 365 x 24 = 8760 hours to finish one orbit around the sun. Since the orbit isn't slowing, it would still take 8760 hours to go around the sun even when the Earth has 25 hour days. Thanks dodeka.

  • Science

    I've Heard That The Earth's Rotation Is Slowing. How Long Until Days Last 25 Hours?

    By Jessica Cheng Posted on 9.30.2008 8 Comments

    We could all use an extra hour in the day, but clocks won't need to be extended anytime soon. The time the Earth takes to make a complete rotation on its axis varies by about a millionth of a second per day, says physicist Tom O'Brian of the National Institute of Standards and Technology. While some days are shorter than average, the planet's rotation shows a long-term slowing trend, ultimately leading to a longer day.

    Article Rating:
    10.1.2008 at 11:38pm - Comment by steelwolf_sg

    No No No. The earth's rotation around the sun continues at the same rate, which means the length of the year stays the same. 365 days. But each day, Earth takes 25 hours to rotate around it's own axis. This so the days are longer but the year remains the same. You now have 25 x 365 = 9125 hours per year, instead of the old 24 x 365 = 8760 hours.



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