Science Glossary

Question 1

anisotropic

Answer 1

having a different physical property (or value) if measured in a different direction, e.g., wood is stronger parallel to the grain than perpendicular to it.

Question 2

Stokes shift

Answer 2

the spectral shift to lower energy from the incident (excitation) light and scattered (emitted) light.

Question 3

soliton

Answer 3

is a nonlinear, self-reinforcing, localized wave packet that is strongly stable in that it preserves its shape while propagating freely at constant velocity and recovers it even after collisions with other located wave packets.

Question 4

phonon

Answer 4

is a collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter in solids and some liquids.

Question 5

plasmon

Answer 5

is a quantum of oscillations of electron density in conducting media (aka plasma oscillations).

Question 6

intersystem crossing

Question 7

endocytosis

Question 8

quenching

Question 9

exciton

Question 10

exfoliation

Question 11

Schiff base reaction