A sundial is an ancient invention that tells time using the sun’s position. The gnomon is used to...
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- Slide 1
- Slide 2
- A sundial is an ancient invention that tells time using the
suns position. The gnomon is used to show the suns shadow.
- Slide 3
- The sundial dates back as far as Egyptian and Babylonian times,
around 1500 BC. The Ancients Greeks then made sundials their own.
They are the ones that developed the science of sundial. The Romans
then adopted the Greeks sundials. The first known Roman sundial is
from 293 BC.
- Slide 4
- By using the shadow of the sun, you can tell the time of day.
When its midday the shadows is short. When its afternoon, the sun
casts a longer shadow. FUN FACTS!!!! The shadow in winter is longer
than the shadows in summer. This is because the sun is lower in the
sky in winter.
- Slide 5
- Horizontal dials Vertical dials Equatorial dials Polar dials
Reflected ceiling dials Portable dials Analemmatic dials The
sundial that is most know is the horizontal dial. Its design is
made on a pedestal. The horizontal dial is one that is commonly
seen today