MinutePhysics
Why December Has The Longest Days
December has the longest solar days (noon-to-noon) because of the weird way a combination of the axial tilt of the earth and the eccentricity of its elliptical orbit conspire in December. Perihelion + Solstices = Long Days.
TED-Ed
TED-ED: The Sun's surprising movement across the sky - Gordon Williamson
Suppose you placed a camera at a fixed position, took a picture of the sky at the same time every day for an entire year, and overlaid all of the photos on top of each other. What would the sun look like in that combined image? A...
SciShow Kids
Make Your Own Sundial!
Squeaks broke his watch! Luckily Jessi knows of a handy way to tell time, with a sundial!
Curated Video
Jai Singh
How Maharaja Jai Singh used scale to build and enhance the accuracy of his giant astronomical sundials. Maths - History Of Maths A Twig Math Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show...
Getty Images
A sundial hangs from the side of a stone building.
A sundial hangs from the side of a stone building.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
Sundial. Shooting in the summer. Time lapse.
Sundial. Shooting in the summer. Time lapse.
Getty Images
T/L Sundial, with ivy around edges, shadow moves around timepiece
T/L Sundial, with ivy around edges, shadow moves around timepiece
Getty Images
T/L Sundial, with stone background, shadow moves around timepiece
T/L Sundial, with stone background, shadow moves around timepiece
Getty Images
Midtown skyline and a Jersey City park
The view of the New York City midtown skyline from the Hyatt Regency Pier in Jersey City. The Hyatt Regency Jersey City Sundial seen in the foreground.
Getty Images
Villa Giulia (Villa del Popolo), southern exedra with the central fountain with sundial, Palermo, Sicily.
Villa Giulia (Villa del Popolo), southern exedra with the central fountain with sundial, Palermo, Sicily.
Getty Images
MS T/L Shot of shadow of sundial (cultural assets) moving / Chungcheongbuk do, South Korea
MS T/L Shot of shadow of sundial (cultural assets) moving / Chungcheongbuk do, South Korea
Getty Images
MS Shot of shadow of Sundial moving at Gwanghwamun Square / Seoul, South Korea
MS Shot of shadow of Sundial moving at Gwanghwamun Square / Seoul, South Korea