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  2. Optical rotation - Wikipedia

    en.wikipedia.org/wiki/Optical_rotation

    Think of one enantiomer in a solution as a large number of little helices (or screws), all right-handed, but in random orientations. Birefringence of this sort is possible even in a fluid because the handedness of the helices is not dependent on their orientation: even when the direction of one helix is reversed, it still appears right handed.

  3. Glossary of geography terms (N–Z) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geography_terms...

    Also narrow. A land or water passage that is confined or restricted by its narrow breadth, often a strait or a water gap. nation A stable community of people formed on the basis of a common geographic territory, language, economy, ethnicity, or psychological make-up as manifested in a common culture. national mapping agency A governmental agency which manages, produces, and publishes ...

  4. Glossary of geography terms (A–M) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geography_terms...

    Also amphidrome and tidal node. A geographical location where there is little or no tide, i.e. where the tidal amplitude is zero or nearly zero because the height of sea level does not change appreciably over time (meaning there is no high tide or low tide), and around which a tidal crest circulates once per tidal period (approximately every 12 hours). Tidal amplitude increases, though not ...

  5. Navigation - Wikipedia

    en.wikipedia.org/wiki/Navigation

    More than two dozen GPS satellites are in medium Earth orbit, transmitting signals allowing GPS receivers to determine the receiver's location, speed and direction. Since the first experimental satellite was launched in 1978, GPS has become an indispensable aid to navigation around the world, and an important tool for map-making and land ...

  6. One Direction ultimately fared better than Belle Amie and finished in the top three behind Matt Cardle and Rebecca Ferguson. Following the competition, 1D signed with Cowell’s Syco record label.

  7. Topographical disorientation - Wikipedia

    en.wikipedia.org/wiki/Topographical_disorientation

    Topographical disorientation is the inability to orient oneself in one's surroundings, sometimes as a result of focal brain damage. [1] This disability may result from the inability to make use of selective spatial information (e.g., environmental landmarks) or to orient by means of specific cognitive strategies such as the ability to form a mental representation of the environment, also known ...

  8. THEN AND NOW: The members of One Direction 12 years later - AOL

    www.aol.com/news/then-now-members-one-direction...

    One Direction was formed in 2010 but went on indefinite hiatus in 2016. Harry Styles, Niall Horan, Liam Payne, Louis Tomlinson, and Zayn Malik all have solo careers now.. Malik, Payne, and ...

  9. Glossary of British terms not widely used in the United States

    en.wikipedia.org/wiki/Glossary_of_British_terms...

    direction-indicator light on a vehicle (US: turn signal) turning A place where one can turn off a road. Not generally used where the turn would take one onto a more major road or for a crossroads. (US: turn). "drive past the post office and you'll see a small turning to the right, which leads directly to our farm" turn-ups