title: Holographic sundial.
abstract: A holographic sundial, to our knowledge the first sundial that does not use a gnomen or shadow-casting device, is designed and demonstrated. The accuracy of the device is measured and analyzed.
authors.forename: R
authors.initials: R
authors.lastname: Penland
authors.forename: R
authors.initials: R
authors.lastname: Cormack
authors.forename: J
authors.initials: J
authors.lastname: Carsten
authors.forename: S
authors.initials: S
authors.lastname: Sayhun
authors.forename: K M
authors.initials: KM
authors.lastname: Johnson