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NGC 6826 (also known as Caldwell 15) is a planetary nebula located in the constellation Cygnus.It is commonly referred to as the "Blinking Planetary", although many other nebulae exhibit such "blinking".
Scientists have discovered a mysterious pulsating light—and they don’t know what it could be. It pulses at a rate of about once every 21 minutes, and has been doing so since at least 1988.
In other words, it is the opposite to a flashing light where the total duration of darkness is longer than the duration of light. It has the appearance of flashing off, rather than flashing on. Like a flashing light, it can be used for a single occulting light that exhibits only a single period of darkness or the periods of darkness can be ...
In the 1960s, the 260 was initially designed to test the feasibility of solid rocket motors for space exploration, including use on the lower stage of the Saturn V. Development of the motors was originally given as parallel contracts to Aerojet and Thiokol. Aerojet won out in the end when Thiokol's test chamber burst at 56% of proving pressure ...
Its measurement technology uses atomic force microscopy to measure silicon wafers, which allows it to operate at dimensions smaller than most wavelengths of light.
Piperonyl butoxide (PBO) is a pale yellow to light brown liquid [1] organic compound used as an adjuvant component of pesticide formulations for synergy.That is, despite having no pesticidal activity of its own, it enhances the potency of certain pesticides such as carbamates, pyrethrins, pyrethroids, and rotenone. [2]
An 18-year-old Dalit woman from the southern India state of Kerala has accused 64 men of sexually abusing her since she was 13 years old. Police have arrested 28 people in connection with the case ...
Warning light may refer to: Aircraft warning lights, a device used on radio masts and towers and other tall structures to prevent collisions; Idiot light, an indicator of malfunction of a system within a motor vehicle, especially if used to replace a gauge Check engine light, to indicate malfunction of a computerized engine management system