| MQMAS | Multiple-Quantum Magic-Angle Spinning |
|---|---|
| SQUID | SUper Conducting Quantum Interference Device |
| HMQC | heteronuclear multiple quantum coherence |
| HSQC | heteronuclear single quantum coherence |
| quantum theory | The theory that the radiation and absorption of energy take place in definite quantities called quanta (e) which vary in size and are defined by the equation e=hv in which h is planck's constant and v is the frequency of the radiation. (12 Dec 1998) |
|---|---|
| quantum yield | The number of photons required for the formation of one oxygen molecule in photosynthesis. Varies from 8-14 depending on the system used to measure it. (18 Nov 1997) |