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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." [ 1 ] 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 .
Photopsia is the presence of perceived flashes of light in the field of vision. It is most commonly associated with: [4] posterior vitreous detachment; migraine aura (ocular migraine / retinal migraine) migraine aura without headache; scintillating scotoma; retinal break or detachment; occipital lobe infarction (similar to occipital stroke)
Netgear WNR3500L router. The WNR3500L (also known as the WNR3500U) is an 802.11 b/g/n Wi-Fi router created by Netgear.It was officially launched in the autumn of 2009. The WNR3500L runs open-source Linux firmware and supports the installation of third party packages such as DD-WRT and Tomato.
A Maryland woman will spend up to 50 years in prison after the badly decaying bodies of her niece and nephew were found in her trunk, where she had kept them for months. On August 13, 2024, Nicole ...
The White House appears to be hoping it can slash headcount without causing major headaches for taxpayers who are just trying to send in their Form 1040. According to multiple reports, IRS ...
An example of a complete light characteristic is "Gp Oc(3) W 10s 15m 10M". This indicates that the light is a group occulting light in which a group of three eclipses repeat every 10 seconds; the light is white; the light is 15 metres above the chart datum and the nominal range is 10 nautical miles.
The short-term flicker indicator P st LM is implemented in a light flickermeter which processes the light measured by means of a light sensor. The light flickermeter [ 14 ] [ 15 ] consists of four processing blocks which include weighting filters to account for frequency dependency of the visibility of TLMs as well as statistical processing to ...
It is illegal for any vehicle to show a flashing coloured light (with the exception of the normal direction indicators or a green anti-lock brake warning indicator), unless it is an emergency or other authorised vehicle. [77] However, recently bicycles can exhibit a flashing rear red lamp and flashing white front lamp. [78]