👉 A trifocal lens is a type of optical lens that can be used to focus light from different directions. It consists of three separate elements, or triculas, which are connected by lenses. The focal length of these triculas determines how far apart they are when combined together to form the lens. For example, a trifocal lens with two foci located at 10 cm and 20 cm can be used to focus light from three different directions: from the left (1
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What is the definition of Trifocal? 🙋
👉 A trifocal is a type of musical scale in which each note has three different pitches. This means that each note can be played on two or more different keys, and each key can play multiple notes at once. For example, the major triad (the 7th, 8th, and 9th) consists of three notes: C, D, and E, with C being the tonic key and all other notes being the minor keys.
