For instance a piece of graffiti may look innocuous upon observation but become suspicious when observed at multiple polling locations.
The 'Hawthorne' effect is when observed participants change their behaviour due to being under observation.
Like a suspect in a lineup, it seems to shrink back when observed.
The simplest scene, when observed from another angle, acquires a different hue.
Unfortunately it appears that social facilitation only occurs when observed by a member of one's own species.
Their trademark black and reddish colours, beautiful when observed from upwind, do not give away their morbid behaviour.
In "Heart of Darkness," Joseph Conrad remarks that empire, when observed close up, is not a pretty sight.
One Gestalt principle, that of common fate, depends on movement and is quite striking when observed.
When observed recently, Limbaugh was braying with glee because the American city of Chicago had been turned down in its bid to host the 2016 Olympic Games.
But when observed closely, the pounded pavement of this city holds as much interest as the peaks of skyscrapers.
Differences in morphology are clear when observed by SEM.
