Horologium (constellation)
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Horologium is a constellation of six stars faintly visible in the southern celestial hemisphere. It was first described by the French astronomer Nicolas-Louis de Lacaille in 1756 and visualized by him
Horologium constellation: showing the tangent line, or viewer's horizon, at latitude approx 23°N, which is parallel to the line of −67.04 declension, the lower declination boundary of the constellation.
The constellation Horologium as it can be seen by the naked eye
Composite image of NGC 1512 (left) and the dwarf galaxy NGC 1510
Christiaan Huygens painting
Pendulum clock
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A pendulum clock is a clock that uses a swinging weight known as a pendulum as its timekeeping element. The pendulum is an approximate harmonic oscillator that swings in a time interval that depends o
Horologium (constellation)
…Horologium (Latin hōrologium, the pendulum clock, from Greek ὡρολόγιον, lit. 'an instrument for telling the hour') is a constellation of six stars faintly visible in the southern celestial hemisphere…
A design for a pendulum clock by Vincenzo Viviani in c. 1637. The clock was never completed.
A German 19th century wallclock made by Gustav Becker
Ansonia Clock model mechanism, c. 1904
Pendulum clock Ansonia. C. 1904, SANTIAGO, hanging oak gingerbread clock, eight-day time and strike.