sundials

     

A sunial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod or a sharp, straight edge) onto a flat surface marked with lines indicating the hours of the day. As the sun moves across the sky, the shadow-edge progressively aligns with different hour-lines on the plate. Such designs rely on the style being aligned with the axis of the Earth's rotation. Hence, if such a sundial is to tell the correct time, the style must point towards true North (not magnetic North) and the style's angle with horizontal must equal the sundial's geographical latitude. However, many sundials do not fit this description, and operate on different principles.

Found pages about sundials

Tweets about sundials

  • RT @ImaFlyontheWall: Everybody synchronize your sundials...
  • Everybody synchronize your sundials...
  • A pair of Thomas Tompion’s splendid sundials will be on show in Painting Paradise: The Art of the Garden at the...
  • RT @neiltyson: Sundials designed for the North won't work in the Southern Hemisphere. If ported there, they would reckon time backwards.
  • REMINDER : don't forget to tilt your sundials back tonight
  • Sundials don't work on cloudy days.
  • My Top 3 #lastfm Artists: Speedy Ortiz (19), Sundials (13) & Beach Slang (8) #mm
  • 'Sundials' di Matteo Cirenei Progetto Finalista, Premio Celeste 2014
  • 'Sundials' di Matteo Cirenei Progetto Finalista, Premio Celeste 2014
  • @CruiseWithNKOTB @DonnieWahlberg Sundials? I've been using the stars!
  • Aqua #Admin #Amber owned #two ◎ www.MonsterMMORPG. com ♧ Volbeat. sundials ✩ by #MonsterMMORPG ➨ #rechner
  • RT @sofiaorden: Mathematical models: from sundials to number engines - for iPod/iPhone - Th | | Mathematics #… http:…
  • Mathematical models: from sundials to number engines - for iPod/iPhone - Th | | Mathematics #…
  • Magnetic and azimuthal sundials #museum #Milan #poldipezzoli #visits #museumday #instalike #art…
  • Short break in Cambridge included King's, #chronophage, #sundials and punting! See blog
  • Easy-to-Make Wooden Sundials by Milton Stoneman downloads torrent
  • @spraynardband dudes, excellent reference! Harris is from Paris, Miles is from Sundials. <3 Carl
  • Kids and sundials at Rittenhouse Park @ Rittenhouse Square
  • Sundials and the fascination with them. Smithsonian article written by Sobel.
  • @quizaddictblog Fear of the middle of sundials?
  • @HitsThaBIunt @F4llen_Ang3l Sundials......
  • @DragonAgeOTR All this talk of sundials and rigor mortis is reminiscent of "Dovah floss". Unsure whether to laugh or hang my head in shame.
  • @burksmyth apparently they also play a Sundials song sometimes
  • RT @NBC4FFN: Don't forget. We're on at 11:15. Set your watches, alarm clocks, sundials, whatever you got!
  • Don't forget. We're on at 11:15. Set your watches, alarm clocks, sundials, whatever you got!
  • @HitsThaBIunt @LOT_D2 sundials are a thing, actually
  • sundials and papers? I shall take no notice of such nonsense.'
  • @sundialsva @Cheap_Girls this is why I love Sundials so much. They say it how it is.
  • KAJALB Rare Sundials are Antique Items.
  • Someone go see Speedy Ortiz, Ex-Hex, Sundials, and The Ar-Kaics at Strange Matter with me next month :-)
  • Mathematical models: from sundials to number engines - for iPod/iPhone - Th | | Mathematics #free #Mathematics
  • #Sculpture 'Orbit (Scientific Modern Precision Yard/garden sundials)' by Alastair Hunter is now available from
  • Sundials, Speedy Ortiz, and Moose Blood are the jams this week
  • Easy-to-Make Wooden Sundials by Milton Stoneman downloads torrent #ebook
  • Just discovered Sundials and they're rad.
  • Sundials #tech via @ImGabbar #Gabbarism
  • The great thing about clock towers is that they double as sundials for when the power goes out
  • Exhibition of ancient sundials. Journées du patrimoine à #Brest #Steampunk #History
  • RT @CarineDescheper: Exhibition of ancient sundials. Journées du patrimoine à #Brest #Steampunk #History
  • RT @SarahEBond: Richard Talbert will be speaking at @UWMadison on Oct. 16th on portable sundials. Imma be there & you should be too! http:/…
  • Richard Talbert will be speaking at @UWMadison on Oct. 16th on portable sundials. Imma be there & you should be too!
  • El Portero Sundials #AddaWordRuinaMovie
  • RT @bellalovesthat: “@DashForDays: Bruhhh lmao sundials
  • “@DashForDays: Bruhhh lmao sundials
  • @sarahcudacamden @sundialsva OMG NO HARRY LOVES SUNDIALS
  • .@dterror real hipsters use base 60.And check the time on sundials.
  • RT @LJDiehl: Using MST to create sundials. @team6c @JerichoMS @JMWiener
  • Using MST to create sundials. @team6c @JerichoMS @JMWiener
  • @DanHanzus @MikeGarafolo not his fault since the glacier has them using sundials.
  • Interactive sundials: bring one to a playground near you!