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Emergency vehicle lighting, also known as simply emergency lighting or emergency lights, is a type of vehicle lighting used to visually announce a vehicle's presence to other road users. A sub-type of emergency vehicle equipment, emergency vehicle lighting is generally used by emergency vehicles and other authorized vehicles in a variety of ...
The blue field entoptic phenomenon is an entoptic phenomenon characterized by the appearance of tiny bright dots (nicknamed blue-sky sprites) moving quickly along undulating pathways in the visual field, especially when looking into bright blue light such as the sky. [1] The dots are short-lived, visible for about one second or less, and travel ...
The visible spectrum is the band of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light (or simply light). The optical spectrum is sometimes considered to be the same as the visible spectrum, but some authors define the term more broadly, to include the ...
World UFO Day has its roots in the so-called Roswell Incident on July 2, 1947. On that date, something crashed at what was then the J.B. Foster ranch in New Mexico. There were reports that the U.S ...
United Airlines will show you why weather is to blame. It can be confusing when you’re looking up at a clear blue sky but your flight is delayed by weather. United Airlines knows that and will ...
The former Apollo 8 astronaut best known for taking the iconic “Earthrise” photo, who died last month while piloting a plane over the waters off Washington state, was doing a flyby near a ...
They shared a video on Thursday, June 6th of the rhino snacking on a watermelon, and it's so cool to see! What drew me to this video was how easily the rhino opened the watermelon and with zero ...
Specialty. Neurology. Frequency. 1 in 4000 [1] Photosensitive epilepsy ( PSE) is a form of epilepsy in which seizures are triggered by visual stimuli that form patterns in time or space, such as flashing lights; bold, regular patterns; or regular moving patterns. PSE affects approximately one in 4,000 people (5% of those with epilepsy).