Yantras & Mantras

Yantra is a Sanskrit word that means "contraption" or "machine." Its use dates back to 11,000 - 10,000 BC. Indian Tantric traditions used yantras as mystical diagrams to aid in meditation and deity worship. Each tradition associates a yantra with specific deities.
The Universe is a mathematical correlation between sound and form. All matter is nothing but a mathematical symmetry of vibrations and frequency of energy particles. Everything that exists in the cosmos has some size and structure - perceivable or conceptualized - in subliminal, astronomical or intermediate dimensions. Even the invisible subtle entities have 'shapes' which could be 'seen' through mental eyes. The sagacious minds of the Vedic Age had deeper insight to 'see' the invisible or sublime elements of nature and express them in a universal language of symbols. A yantra comprises geometric shapes, images, and written mantra. Triangles and hexagrams are common, as are circles and lotuses of 4 to 1,000 petals.
Mantra is a sacred utterance, a numinous sound, a syllable, word or phonemes, or group of words in Sanskrit believed by practitioners to have psychological and/or spiritual powers. The earliest mantras were composed in Vedic Sanskrit in India, and are at least 3000 years old. During the early Vedic period, Vedic poets became fascinated by the inspirational power of poems, metered verses, and music. They referred to them with the root dhi-, which evolved into dhyana (meditation) of Hinduism, and the language used to start and assist this process manifested as a mantra. By the middle Vedic period (1000 BC to 500 BC), mantras were derived from all Vedic compositions. The collection consists the books describing the underlying significance of these yantras and mantras.