Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics A unit of frequency equal to 1012 or one terahertz

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

For Augustin-Jean Fresnel French physicist

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Examples

  • Consider a trip out to the western edge of the peninsula to the Point Reyes Lighthouse, which was built in 1870 and still boasts a 6,000 pound "fresnel" lens.

    Point Reyes, Calif. 2009

  • i worked with a wISP for a while. 700mhz and 900mhz equipment can handle a surprising amount of foliage and still provide a decent connection. however, they wont shoot straight through trees, but if foliage is in some of the lower part of the trannsmission field (called a fresnel zone) then the signal is passable.

    Slashdot: Politics 2008

  • This was taken with a homemade, 6mp Sony point and shoot camera modified and hooked up to a control board, then secured in a waterproof case with glass over the flash and lens, and a fresnel lens over the PIR sensor on the board.

    October Trail Cam Contest 2009

  • This was taken with a homemade, 6mp Sony point and shoot camera modified and hooked up to a control board, then secured in a waterproof case with glass over the flash and lens, and a fresnel lens over the PIR sensor on the board.

    October Trail Cam Contest 2009

  • “Excellent fresnel location,” he whispered, and walked toward the Tree.

    365 tomorrows » The Steel Tree : A New Free Flash Fiction SciFi Story Every Day 2009

  • This was taken with a homemade, 6mp Sony point and shoot camera modified and hooked up to a control board, then secured in a waterproof case with glass over the flash and lens, and a fresnel lens over the PIR sensor on the board.

    October Trail Cam Contest 2009

  • This was taken with a homemade, 6mp Sony point and shoot camera modified and hooked up to a control board, then secured in a waterproof case with glass over the flash and lens, and a fresnel lens over the PIR sensor on the board.

    October Trail Cam Contest 2009

  • “Excellent fresnel location,” he whispered, and walked toward the Tree.

    365 tomorrows » 2009 » December : A New Free Flash Fiction SciFi Story Every Day 2009

  • It's an historic landmark and boasts a first-order fresnel lens.

    Alona Elkayam: Best and Worst Summer Thrills of the Week: June 28-July 5 2010

  • When you are finished admiring the beautiful fresnel lens, its glass prisms and its view, walk down the road and take the stairs down to the beach.

    Alona Elkayam: Best and Worst Summer Thrills of the Week: June 28-July 5 2010

Comments

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  • I love this word.

    March 11, 2008