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Quantum Science and Physics
Quantum Entanglement
A phenomenon in which two or more particles become linked so that the quantum state of one instantly influences the state of the other, regardless of the distance between them. Experiments have confirmed that entanglement is a genuine feature of nature and not a result of hidden variables. It is a foundational resource for quantum computing, quantum cryptography and quantum teleportation.
Superposition
The principle that a quantum system can exist in multiple states simultaneously until it is measured or observed. A particle in superposition does not have a definite position, spin or energy. It occupies all possible states at once, described by a mathematical wave function. Measurement causes the wave function to collapse into a single definite state.
Wave-Particle Duality
The experimentally confirmed finding that quantum entities such as photons and electrons exhibit both wave-like and particle-like behaviour depending on how they are observed. The double-slit experiment is the most famous demonstration of this principle. It suggests that the nature of reality at the quantum level is fundamentally different from everyday experience.
Zero Point Energy
The lowest possible energy that a quantum mechanical system can have. Even at absolute zero temperature, particles retain residual energy due to the Heisenberg uncertainty principle. The zero point field refers to the quantum vacuum state of electromagnetic fields, which is not truly empty but filled with fluctuating energy.
Holographic Principle
A theoretical framework suggesting that all the information contained within a volume of space can be described by data encoded on its boundary. Originally proposed in the context of black hole physics by Gerard 't Hooft and refined by Leonard Susskind, the principle implies that our three-dimensional reality may be a projection from a two-dimensional surface.
Entropy
A measure of the number of microscopic arrangements that correspond to a given macroscopic state. Often described as a measure of disorder, entropy governs the direction of time and the ultimate fate of the universe. The second law of thermodynamics states that the total entropy of an isolated system never decreases.
Standard Model
The theoretical framework that describes the fundamental particles of matter (quarks and leptons) and three of the four known forces (electromagnetic, strong nuclear and weak nuclear). Completed with the discovery of the Higgs boson in 2012, the Standard Model is one of the most successful theories in physics but does not include gravity or explain dark matter and dark energy.
Consciousness and the Mind
Hard Problem of Consciousness
The philosophical challenge of explaining why and how physical processes in the brain give rise to subjective experience. Coined by philosopher David Chalmers in 1995, the hard problem asks why there is something it is like to experience the colour red, the taste of coffee or the sensation of pain rather than these processes occurring without any inner experience at all.
Neuroplasticity
The brain's ability to reorganise itself by forming new neural connections throughout life. Once believed to be fixed after childhood, the adult brain is now known to change its structure and function in response to experience, learning, meditation and recovery from injury. Neuroplasticity is the mechanism through which meditation physically reshapes the brain.
Default Mode Network
A network of brain regions that becomes active when a person is not focused on the outside world. Associated with mind-wandering, daydreaming and self-referential thinking, the default mode network is linked to rumination and depression when overactive. Meditation has been shown to reduce default mode network activity both during practice and in everyday life.
Qualia
The individual instances of subjective, conscious experience. The redness of red, the pain of a headache and the taste of chocolate are all examples of qualia. Whether qualia can be fully explained by neuroscience or whether they point to something beyond physical processes remains one of the central debates in consciousness studies.
Near-Death Experience (NDE)
A profound subjective experience reported by individuals who have come close to death or were clinically dead before being resuscitated. Common elements include a sense of leaving the body, moving through a tunnel, encountering a bright light and experiencing a life review. NDEs are studied both as neurological phenomena and as potential evidence for consciousness existing independently of the brain.
Astrology, Divination and Ancient Systems
Natal Chart (Birth Chart)
A map of the positions of the sun, moon, planets and other celestial bodies at the exact time and location of a person's birth. In astrology the natal chart is used as a framework for understanding personality traits, life themes, strengths and challenges. Different astrological traditions (Western, Vedic and Chinese) use different methods to construct and interpret charts.
Transit
The current movement of a planet through the zodiac as it relates to the positions in a natal chart. Transits are used in astrology to identify periods of change, growth, challenge or opportunity. Major transits from slow-moving planets such as Saturn, Uranus, Neptune and Pluto are considered particularly significant.
Chaldean Numerology
An ancient numerological system originating in Mesopotamia that assigns numerical values to letters based on their vibrational frequency rather than alphabetical order. Unlike the Pythagorean system, Chaldean numerology does not use the number 9 in letter assignments and places greater emphasis on the name a person is known by rather than their birth name.
Pythagorean Numerology
A numerological system attributed to the Greek mathematician Pythagoras that assigns numbers 1 through 9 to the letters of the alphabet in sequential order. It is the most widely used numerology system in the West. Core calculations include the Life Path Number (derived from the birth date) and the Expression Number (derived from the full birth name).
I-Ching (Book of Changes)
One of the oldest texts in recorded history, originating in China over 3,000 years ago. The I-Ching is a divination system based on 64 hexagrams, each composed of six lines that are either solid (yang) or broken (yin). It is consulted by generating a hexagram through coin tosses or yarrow stalk methods and interpreting the resulting pattern as guidance for a specific question or situation.
Feng Shui
A Chinese philosophical system that studies the relationship between people and their environment. Feng shui uses principles of energy flow (qi), the five elements (wood, fire, earth, metal, water) and directional orientation to optimise the arrangement of spaces for health, prosperity and harmony. Its origins date back over 3,000 years.
Spiritual Practices and Healing
Chakra
In Hindu and yogic traditions, chakras are energy centres located along the spine from the base to the crown of the head. The seven primary chakras are each associated with specific physical, emotional and spiritual functions. Practices such as meditation, yoga and energy healing work with the chakra system to promote balance and wellbeing.
Kundalini
A concept from Hindu tantra describing a dormant spiritual energy believed to reside at the base of the spine. When awakened through meditation, breathwork or other practices, kundalini energy is said to rise through the chakras, producing profound shifts in consciousness, perception and physical sensation. Kundalini awakening is considered a significant event in many spiritual traditions.
Reiki
A Japanese energy healing technique developed by Mikao Usui in the early twentieth century. Practitioners channel universal life energy through their hands to promote healing, relaxation and stress reduction. Reiki is practised in over 60 countries and is offered in some hospitals as a complementary therapy alongside conventional medical treatment.
Sacred Geometry
The study of geometric patterns and proportions that appear throughout nature, art and architecture. Examples include the Fibonacci sequence, the golden ratio, the Flower of Life and Metatron's Cube. Sacred geometry is found in the structure of crystals, the spiral of galaxies, the branching of trees and the design of ancient temples across cultures.
Meridian
In traditional Chinese medicine, meridians are pathways through which qi (life energy) flows in the body. The meridian system comprises 12 primary channels, each associated with a major organ, plus additional vessels. Acupuncture, acupressure and qigong work with the meridian system to restore the smooth flow of energy and promote health.
Meditation
A practice of directed attention and awareness that has been used across cultures for thousands of years. Forms include focused-attention meditation (concentrating on a single object such as the breath), open-monitoring meditation (observing thoughts without attachment) and loving-kindness meditation (cultivating compassion). Neuroscience research has confirmed that regular practice physically restructures the brain.
Ancient Wisdom and Esoteric Knowledge
Hermeticism (Hermetic Laws)
A philosophical and spiritual tradition attributed to Hermes Trismegistus, a legendary figure blending the Greek god Hermes and the Egyptian god Thoth. The seven Hermetic principles - Mentalism, Correspondence, Vibration, Polarity, Rhythm, Cause and Effect and Gender - are outlined in The Kybalion and describe universal laws governing reality. The famous axiom "As above, so below" originates from the Hermetic tradition.
Mystery Schools
Ancient institutions of learning that taught esoteric knowledge to initiated students through structured stages of instruction. Examples include the Eleusinian Mysteries of Greece, the Egyptian temple schools, the Pythagorean school and the Essene communities. Mystery schools emphasised direct experiential knowledge over purely intellectual study and typically required oaths of secrecy from their students.
Esoteric
Knowledge that is intended for or understood by a small group of people with specialised training or interest. In the context of spiritual and philosophical traditions, esoteric refers to inner or hidden teachings that go beyond the publicly available or exoteric doctrines. Esoteric traditions exist within most major religions and philosophical systems worldwide.
Metaphysics
The branch of philosophy concerned with the fundamental nature of reality, existence and being. Metaphysics asks questions that physics alone cannot answer: What is the nature of consciousness? Does free will exist? What is the relationship between mind and matter? Is there a reality beyond the physical? The term originates from Aristotle's works and literally means "after physics."
Ayurveda
A traditional system of medicine originating in India over 5,000 years ago. Ayurveda classifies individuals into three primary constitution types (doshas) - Vata, Pitta and Kapha - and prescribes diet, lifestyle, herbal remedies and practices tailored to each type. It emphasises prevention and maintaining balance between body, mind and spirit.
Traditional Chinese Medicine (TCM)
A comprehensive medical system developed in China over 2,500 years ago. TCM includes acupuncture, herbal medicine, dietary therapy, qigong and tui na (therapeutic massage). It is based on the concept of qi (life energy) flowing through meridians and the balance of yin and yang forces. TCM treats the whole person rather than isolated symptoms.
This glossary is updated as new topics are added to the platform. For deeper exploration of any term, visit the linked articles or join the discussion in our community forums.