People watching an early television transmission mb-code 2329074 points to the Greenwich Hospital

points to the Greenwich Hospital across the River Thames

An orrery is a mechanical device demonstrating the relative positions and motions of planets and moons in the solar system

It was run over a route starting and finishing in London

' T Apsley Pellatt (1791-1863) was an unsuccessful candidate for election to the Royal Society in 1851

People watching an early television transmission mb-code 2329074 points to the Greenwich HospitalPeople watching an early television transmission, c1920s. Developed by Scottish inventor. John Logie Baird (1888 1946), television was first successfully broadcast in 1924. One of the pioneer experiments appears in this photograph.