NREL Sundial - Golden, CO - Sundials on Waymarking.com

"This is a new design in sundials developed by Precision Sundials LLC in Burlington, VT. Cylindrical focusing mirrors on the triangular support project a sharply focused beam on the inside of the helix. A timescale on the inside of the helix directly reads watch time to generally within 30 seconds of the atomic standard, when properly set up. The timescale slides in its helical track, allowing adjustment for daylight savings and the equation of time (seasonal variations in sundial time). The ball at the base has rotating wedges which allow for precise adjustment for setup at the user's latitude. The dial includes instruction for achieving exact alignment with the earth's axis, and has fine adjustments to assist this process. The helix is 27 inches across, and the focused sunlight travels once around the helix in 12 hours, at a rate of 6 inches per hour. Patent 6,301,793." (from (visit link) )

This sundial is dedicated to Don Prowler, AIAA, 1950-2002, who was instrumental in the use of solar design and building construction.

Sundial Type: Polar - dial plate parallel with earth axis Related Web Site: [Web Link]

Visit Instructions:
Only one log per location per person. You should log your own waymarked sundials as well.
GPS in photo optional.

Recent Visits/Logs:

There are no logs for this waymark yet.