Orbital Dynamics Part 17 Sidereal Day and Equation of Time
The Whitehurst & Son sundial was produced in Derby in 1812 by the nephew of John Whitehurst. It is now in the Derby Museum and Art Gallery. It is a fine example of a precision sundial telling local apparent time with a scale to convert this to local mean time. It is accurate to the nearest minute.
Explore contextually related video stories in a new eye-catching way. Try Combster now!