It is a schematic, and the key point is a sequence of steps: dark → activated → repeated excitation and fluorescence → eventual deactivation or bleaching.
A sequence-of-tenses problem.
This could mean they both have some kind of common system going on, but while I can't vouch for Gandalf, I could see straight away that my picture, while well executed, was very obviously mocked up from an image from the opening sequence of "Dark Knight Rises".
— Damon Darlin How News Spread of the 'Dark Knight Rises' poynter.org | Poynter collects a sequence of real-time Tweets from the Dark Night shooting.
The sequence of dark facets along the orientation 1 follows the progression an + 1=a n + 4, a1=5.
We demonstrate high-resolution fluorescence microscopy based on a cyclic sequential multiphoton (CSM) process, which gives rise to fluorescence emission following a sequence of cyclic transitions between the bright and dark states of a fluorophore induced by pump and reverse light.
Average dark frames: we first acquire a sequence of frames when no light is present, and compute the average and standard deviation of each pixel and readout block.
Titled "Gestures/Reenactments" (1985), it's a sequence of six large black-and-white photographs of a dark-skinned man in a white T-shirt and pants.
He obtained dark red crystals (probably of ]·n) by a sequence of reactions with sodium hydroxide and hydrochloric acid.
Maybe a sequence of earthquakes discouraged them.
