Gnomonics is a term used to describe the science of gnomons, which are the metal or wood projections on sundials used to tell time. The pronunciation of this word is /noʊˈmɑːnɪks/, with the stress placed on the second syllable. The first syllable, "no," is pronounced like the word "know," and the second syllable is pronounced like "mon" with a long "o" sound. The final syllable, "ics," is pronounced with a short "i" sound and a hard "k" sound.
Gnomonics is a term derived from the Greek word "gnomon," which refers to an object used to cast shadows, particularly in ancient sundials. Gnomonics is the scientific study and art of constructing and using sun-dials and other devices for measuring time using shadows. It encompasses various methods and principles related to the design and construction of sundials, as well as the mathematical calculations and geometrical techniques involved in determining accurate time readings.
In gnomonics, the focus is on understanding the relationship between the position of the sun and the resulting shadow cast by the gnomon. The angle and length of the shadow are essential components in determining the time. Gnomonics involves the use of different types of sundials, each designed to suit specific geographic locations and objectives. These can include horizontal, vertical, equatorial, and polar sundials, among others.
Besides measuring time, gnomonics also encompasses the study of celestial bodies and their movements, particularly the sun and its path across the sky. By observing and tracking these celestial movements, gnomonics allows for the determination of not only the time but also seasonal changes and astronomical events.
In summary, gnomonics is a multidisciplinary field that combines aspects of physics, mathematics, astronomy, and design to create and use sundials as precision timekeeping instruments. It involves the understanding of the sun's movement, the casting of shadows, and the mathematical relationships between these variables to accurately measure time.
The principles or art of dialling.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "gnomonics" is derived from the Greek word "gnomon", which refers to a pointer or indicator used to determine the time by casting a shadow. The term is composed of two Greek words: "gnōmōn", meaning "one who knows or examines", and "-ics", which denotes a field or study. Therefore, "gnomonics" essentially means the study or science of gnomons and the measurement of time using shadows and sundials.