Linked from

The 19 pages that link to Sundial, each with the reason it gives.

• Mechanical clockCompared with: Unlike a mechanical clock, it depends on sunlight and local solar time.

• Pendulum clockCompared with: It measures time from the sky’s apparent motion rather than a mechanical oscillator.

• SunriseRelated: Its shadow begins to register daylight after sunrise.

• HourRelated: Sundials made daylight hours measurable, though their length varied by season.

• Solar timeBroader topic: Sundials made local apparent solar time measurable before mechanical clocks.

• SunsetRelated: Its shadow lengthens and changes direction as the Sun approaches sunset.

• Water clockCompared with: Unlike water clocks, sundials require sunlight and indicate local solar time.

• Hour angleRelated: The Sun’s hour angle underlies the relationship between its position and apparent solar time.

• ClockNarrower topic: Sundials are an ancient timekeeping predecessor, but depend on daylight and weather.

• GnomonRelated: A sundial uses a gnomon to cast the moving shadow read against its marked face.

• Clock towersCompared with: Unlike a tower clock, it depends on sunlight and usually serves a smaller viewing area.

• Horizontal coordinate systemRelated: The Sun’s changing altitude and azimuth govern the shadow’s direction and length.

• StopwatchCompared with: A sundial indicates local solar time rather than measuring an interval from a start command.

• DaytimeRelated: A sundial uses the Sun’s apparent daytime motion to mark time.

• History of timekeeping devicesBroader topic: Early sundials used the Sun’s apparent motion to divide the day.

• Iceland sparRelated: A proposed Viking sunstone use links calcite's polarization response to solar navigation.

• ChronometryBroader topic: Sundials are among the earliest instruments for assigning time from recurring celestial motion.

• Oronce FineRelated: Fine’s instrument-making included devices for measuring time from the Sun.

• Shirley JacksonBroader topic: This earlier novel stages Jackson’s sharp comedy of privilege and apocalyptic belief.