![IMG_6271 The old royal observatory, located on the Greenwich meridian that serves as a reference for longitudes (longitude=0). Greenwich meridian time became the...](thumbs/IMG_6271.webp)
The old royal observatory, located on the Greenwich meridian that serves as a reference for longitudes (longitude=0). Greenwich meridian time became the…
![IMG_0830 William Herschel's telescope, originally a 12m-long reflecting telescope built for the discoverer of Uranus in 1781. The telescope was the largest in the world...](thumbs/IMG_0830.webp)
William Herschel's telescope, originally a 12m-long reflecting telescope built for the discoverer of Uranus in 1781. The telescope was the largest in the world…
![IMG_0835 The octagon room, one of the few surviving interiors by Sir Christopher Wren, the architect of Saint Paul cathedral. The room was built for pompe, allowing...](thumbs/IMG_0835.webp)
The octagon room, one of the few surviving interiors by Sir Christopher Wren, the architect of Saint Paul cathedral. The room was built for pompe, allowing…
![IMG_0839 Patrons of the observatory: king Charles II, the observatory's founder, and James II. The 3 Tompion clocks in the wood panels are original. The left 2 clocks...](thumbs/IMG_0839.webp)
Patrons of the observatory: king Charles II, the observatory's founder, and James II. The 3 Tompion clocks in the wood panels are original. The left 2 clocks…
![IMG_0844 Latitude is easy to compute at sea through simple observations, but longitude is impossible to compute. A prize was set in the 18th century to solve this...](thumbs/IMG_0844.webp)
Latitude is easy to compute at sea through simple observations, but longitude is impossible to compute. A prize was set in the 18th century to solve this…