Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q5459090> ?p ?o }
Showing triples 1 to 26 of
26
with 100 triples per page.
- Q5459090 subject Q7130316.
- Q5459090 abstract "Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." It is a disorientation-, vertigo-, and nausea-inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves. The effects are similar to seizures caused by epilepsy (in particular photosensitive epilepsy), but are not restricted to people with histories of epilepsy.This phenomenon has been observed during helicopter flight; a Dr. Bucha identified the phenomenon in the 1950s when called upon to investigate a series of similar and unexplained helicopter crashes. Flicker vertigo in a helicopter occurs when the pilot or front passenger looks up through the blades of the main rotor as it turns in the sun causing the light to strobe. The strobe light effect causes persons who are vulnerable to flicker vertigo to become disoriented, lose control of the aircraft or have a seizure. A similar situation can occur in fixed wing flight whenever flickering light conditions exist. An example would be looking through a slowly spinning propeller while the airplane is landing facing the sun.According to The US Naval Flight Surgeons Manual, flicker vertigo is a rare occurrence.Flicker vertigo has been considered as a principle for various forms of non-lethal weapon. A related crowd-control device was invented by Charles Bovill, which "employed a combination of ultra-sonic waves and strobe lights to induce acute discomfort, sickness, disorientation and sometimes epilepsy."".
- Q5459090 wikiPageExternalLink new_roboweapon_.html.
- Q5459090 wikiPageExternalLink home.html.
- Q5459090 wikiPageExternalLink 7500763.html.
- Q5459090 wikiPageExternalLink 17169884.
- Q5459090 wikiPageWikiLink Q1053145.
- Q5459090 wikiPageWikiLink Q1150299.
- Q5459090 wikiPageWikiLink Q1343028.
- Q5459090 wikiPageWikiLink Q179965.
- Q5459090 wikiPageWikiLink Q186889.
- Q5459090 wikiPageWikiLink Q1872073.
- Q5459090 wikiPageWikiLink Q1937869.
- Q5459090 wikiPageWikiLink Q213433.
- Q5459090 wikiPageWikiLink Q34486.
- Q5459090 wikiPageWikiLink Q39369.
- Q5459090 wikiPageWikiLink Q41571.
- Q5459090 wikiPageWikiLink Q525.
- Q5459090 wikiPageWikiLink Q6279182.
- Q5459090 wikiPageWikiLink Q640853.
- Q5459090 wikiPageWikiLink Q7130316.
- Q5459090 wikiPageWikiLink Q8271517.
- Q5459090 wikiPageWikiLink Q911881.
- Q5459090 wikiPageWikiLink Q9128.
- Q5459090 comment "Flicker vertigo, sometimes called the Bucha effect, is "an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light." It is a disorientation-, vertigo-, and nausea-inducing effect of a strobe light flashing at 1 Hz to 20 Hz, approximately the frequency of human brainwaves.".
- Q5459090 label "Flicker vertigo".