Sundial 423
- Dial City: Berkeley
- Dial State/Province: California
- Dial Country: USA
- Lat: 37° 52.704' N
- Dial Nr: 423
- Dial Type: Sculpture or Artwork
- Dial Access: Public
- Lon: 122° 14.811' W
- Dial Owner: City of Berkeley
- Dial Designer: Richard O'Hanlon and David Cudaback
- Dial Maker:
- Dial Date:
- Location:
- Lawrence Hall of Science at the top of the hill on UC Berkeley campus
- Description:
- This is a large granite statue by Richard O'hanlon entitled "Sunstone II" and was designed in collaboration with astronomer David Cudaback. A north-south large polished granite slab has the top cut at the latitude of 38 degrees to sight the North Star. A hole in the stone allows east or west viewing, with limiting angles designed to show the extent of maximum planetary and lunar wandering. An east-west stone crosses the north side of the granite slab, allowing light to pass only at noontime onto a heel stone with marks for Equinox and Solstice. Access by admission to the Hall of Science museum
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