Dictionary Suite (unified)

Tech Dictionary

Lexicon:
Keyword:
Found 47 records.
Accretion Disk Phy Extra
A structure formed by diffused material in orbital motion around a massive central body, typically a star or a black hole
Antimatter Phy Extra
Matter composed of antiparticles, which have the same mass as particles of ordinary matter but opposite charges
Big Bang Phy Extra
The prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution
Big Crunch Phy Extra
A hypothetical scenario for the ultimate fate of the universe, in which the metric expansion of space eventually reverses and the universe recollapses
Black Hole Phy Extra
A region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it
Boson Phy Extra
A subatomic particle, such as a photon, which has zero or integral spin and follows the statistical description given by S. N. Bose and Einstein
Chandra Limit Phy Extra
The maximum mass of a stable white dwarf star, approximately 1.4 times the mass of the Sun
Cosmic Inflation Phy Extra
A theory of exponential expansion of space in the early universe
Cosmic Microwave Background (CMB) Phy Extra
Electromagnetic radiation which is a remnant from an early stage of the universe, also known as "relic radiation"
Dark Energy Phy Extra
An unknown form of energy that affects the universe on the largest scales, hypothesized to be the cause of the accelerating expansion of the universe
Dark Matter Phy Extra
A hypothetical form of matter that is thought to account for approximately 85% of the matter in the universe
Event Horizon Phy Extra
A boundary beyond which events cannot affect an observer, most often cited in connection with black holes
Fermion Phy Extra
A subatomic particle, such as a nucleon or electron, which has half-integral spin and follows the statistical description given by Fermi and Dirac
General Relativity Phy Extra
The geometric theory of gravitation published by Albert Einstein in 1915
Gravitational Lensing Phy Extra
The distribution of matter (such as a cluster of galaxies) between a distant light source and an observer, that is capable of bending the light from the source as it travels towards the observer
Gravitational Wave Phy Extra
Ripples in the curvature of spacetime that propagate as waves outward from their source at the speed of light
Hawking Radiation Phy Extra
Thermal radiation that is theoretically predicted to be emitted by black holes due to quantum effects near the event horizon
Higgs Boson Phy Extra
An elementary particle in the Standard Model of particle physics, produced by the quantum excitation of the Higgs field
Multiverse Phy Extra
A hypothetical group of multiple universes
Neutron Star Phy Extra
The collapsed core of a massive supergiant star, which had a total mass of between 10 and 25 solar masses
Parallax Phy Extra
A displacement or difference in the apparent position of an object viewed along two different lines of sight
Photon Phy Extra
A type of elementary particle that serves as the quantum of the electromagnetic field, including electromagnetic radiation such as light
Planck Length Phy Extra
The scale at which quantum gravitational effects are believed to become significant, approximately 1.616 x 10^-35 meters
Pulsar Phy Extra
A highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles
Quantum Entanglement Phy Extra
A physical phenomenon that occurs when a group of particles are generated, interact, or share spatial proximity in a way such that the quantum state of each particle cannot be described independently