Science, Technology, and Biology
- Light travel distance, a cosmological distance measure
- Low Temperature Difference engine, a heat engine that operates by cyclic compression and expansion of air or other gas, see Stirling engine
- Laser target designator, a laser light source which is used to illuminate a target
- Linear Transformer Driver, a torus shaped parallel connection of switch capacitor units, designed to deliver rapid high power pulses
- Long-term depression, (neurophysiology), a long-lasting weakening in signal transmission between neurons
Read more about this topic: LTD
Famous quotes containing the word biology:
“Nothing can be more incorrect than the assumption one sometimes meets with, that physics has one method, chemistry another, and biology a third.”
—Thomas Henry Huxley (1825–95)