The Sunstone: Secret of Viking Navigation
Experiments in Viking Navigation Viking Sun Stone
let a hick show you how to use a Viking stone compass
Viking Sun Compass
How the Vikings may have used calcite to locate the position of the Sun in a cloudy sky
Viking Sunstone Accurate As A Magnetic Compass! | Expedition Unknown
Did the Vikings use the sunstone for navigation?
Vikings (2013) History Channel Series - Navigate with a sunboard
Making a Sun Compass
Viking Sun Stone in Action, Example 1.
Viking Sunstone (e.g., Iceland Spar) Double Refraction, Not Direction of the Sun
Viking sunstone (Iceland spar)
How a Viking sun stone works, using light polarised by air in the sky. Sluneční kompas Vikingů.
Viking sun stone, CaCo3
Mythical Viking Sunstone Is Real
How a Viking sun stone works, using light polarised by reflection from ice. Sluneční kompas Vikingů.
Using the Viking sun compass
The secrets of Viking navigation - An interview with a captain of a Viking ship replica
The UnXplained: Vikings Used a MAGIC CRYSTAL to Navigate?! (Season 6)