scintillation

noun

1. 1

   the twinkling of the stars caused when changes in the density of the earth's atmosphere produce uneven refraction of starlight

2. 2

   the quality of shining with a bright reflected light

3. 3

   a brilliant display of wit

4. 4

   a rapid change in brightness; a brief spark or flash

5. 5

   (physics) a flash of light that is produced in a phosphor when it absorbs a photon or ionizing particle