|The Orloj astronomical clock|
To celebrate it's 600th birthday visitors to Old Town Square were entertained with a 10 minute large-screen video of special effects, and visuals of some of the history that the clock has lived through that were projected directly onto the face of Orloj.
Through careful measurements, the video projection managed to create strange and truly amazing optical illusions: such as the outer walls of the clock bulging outward, or opening up to reveal the clockwork mechanisms inside, or cascades of rain pouring down off of the eves of the clock..
For the video and a little bit more on the Orloj clock follow the jump.
The Orloj is composed of three main components: the astronomical dial, "The Walk of the Apostles", and a calendar dial.
The astronomical dial is a mechanical astrolabe and is capable of not only telling the time, but keeping track of the position of the sun, moon, zodiac symbols, and equinoxes. It is essentially a very primitive planetarium.
|The calendar on the Orloj|
The calendar face was added to the Orloj in 1870 is displayed beneath the clock.