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In visual perception, flicker is a human-visible change in luminance of an illuminated surface or light source which can be due to fluctuations of the light source itself, or due to external causes such as due to rapid fluctuations in the voltage of the power supply (power-line flicker) or incompatibility with an external dimmer.
Work No. 227: The lights going on and off [1] is an installation by British artist Martin Creed.As of 2013, it forms part of the permanent collection at Tate Britain. [2] The installation is widely considered to be one of Creed's signature art works [3] and has also been described as Creed's "most notorious work".
Temporal light artefacts (TLAs) are undesired effects in the visual perception of a human observer induced by temporal light modulations. Two well-known examples of such unwanted effects are flicker and stroboscopic effect. Flicker is a directly visible light modulation at relatively low frequencies (< 80 Hz) and small intensity modulation levels.
Green goo oozing from electrical sockets and flickering lights might not be a sign your house is haunted this Halloween - but rather a call is needed for an electrician, according to a campaign group.
WEST LONG BRANCH - Lights flickering on and off, seemingly at random. The sound of organ music echoing. Unexplained cold spells and visions. Eerie experiences in the elevators, where tragedy ...
The incidence of light on the human eye produces visual impressions, so its presence is indispensable for the capture of art. At the same time, light is intrinsically found in painting, since it is indispensable for the composition of the image: the play of light and shadow is the basis of drawing and, in its interaction with color, is the ...
Fluorescent lamps with magnetic ballasts flicker at a normally unnoticeable frequency of 100 or 120 Hz (twice of the utility frequency; the lamp is lit on both the positive and negative half-wave of a cycle). This flickering can cause problems for some individuals with light sensitivity [1] and are
Light sensitivity or photosensitivity refers to a notable or increased reactivity to light. Apart from vision , human beings have many physiological and psychological responses to light. In rare individuals an atypical response may result in serious discomfort, disease, or injury.