| |
Da- da
- Prefix representing a multiplication of 10
- DAB
- Abbreviation of Digital Audio Broadcasting.
- dalton
- The atomic mass unit is sometimes called the dalton, after John Dalton.
- Dalton, John
- He developed atomic theory that accounts for the law of conservation of mass, law of definite proportions and law of multiple proportions.
- Dalton′s Law of Partial Pressures
- The total pressure of a mixture of gases, which do not interact chemically, is equal to
the sum of the partial pressures.
- dam
- Abbreviation of decametre, unit length equal to 10m.
- Damped Natural Frequency
- The frequency at which a damped system will oscillate in a free vibration situation.
- Damper
- Device used to reduce unwanted vibrations of a system.
- Damping
- Dissipation of energy in a system, either through time or distance.
- Damping Factor
- The ratio of actual damping in a system to its critical damping.
- Damping Pad
- Material applied to add damping to another material to reduce structural vibrations. This layer may be constrained or unconstrained.
- Damping Ratio
- Also known as Damping Factor, the ratio of actual damping in a system to its critical damping.
- Damps
- Any dangerous vapours in caves, mines etc.
- Darcets Alloy
- A low melting point alloy.
- Dark Matter
- Matter that is in space but is not visible to us because it emits no radiation
by which to observe it.
- Darlington Pair
- Two directly coupled transistors in which the emitter of the first drives the base of the second.
- Darwin, Charles
- Darwin struck upon the theory of evolution.
- Data
- A series of facts or statements that may have been collected, stored, processed or manipulated but have not been organized.
- Data Mining
- Using automated data anlysis techniques to find themes or relationships.
- Database
- Information organised into interrelated tables of data and information.
- Daughter Isotope
- In a nuclear equation the compound remaining after the parent isotope
(the original isotope) has undergone decay.
- Davisson-Germer Experiment
- An experiment that conclusively confirmed the wave nature of electrons.
| |
