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In electrical and safety engineering, hazardous locations (HazLoc, pronounced haz·lōk) are places where fire or explosion hazards may exist. Sources of such hazards include gases, vapors, dust, fibers, and flyings, which are combustible or flammable. Electrical equipment installed in such locations can provide an ignition source, due to ...
iOS 8 is the eighth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 7.It was announced at the company's Worldwide Developers Conference on June 2, 2014, and was released on September 17, 2014.
The iPad (5th generation)[ 3] (also referred to as the iPad 9.7-inch[ 4]) is a tablet computer designed, developed, and marketed by Apple Inc. After its announcement on March 21, 2017, conflicting naming conventions spawned a number of different names, including "fifth-generation iPad" or "iPad (2017)". The device was released five years after ...
The iPad (9th generation)[ 3][ 4] (also referred to as the iPad 10.2-inch) is a tablet computer developed and marketed by Apple as the successor to the eighth-generation iPad. It was announced on September 14, 2021, and released on September 24. The ninth-generation iPad was discontinued on May 7, 2024, with the announcement of the iPad Air ...
A fire alarm notification appliance is an active fire protection component of a fire alarm system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action. Audible appliances have been in use longer than any other method of notification.
The Option key, ⌥, is a modifier key present on Apple keyboards. It is located between the Control key and the Command key on a typical Mac keyboard. There are two Option keys on modern (as of 2020) Mac desktop and notebook keyboards, one on each side of the space bar. (As of 2005, some laptops had only one, in order to make room for the ...
The iPad Air (3rd generation)[ 2] (colloquially referred to as iPad Air 3) is a tablet computer developed, and marketed by Apple Inc. It was announced and released on March 18, 2019, alongside the 5th-generation iPad Mini. The device was released five years after the previous iPad Air 2, as the iPad (5th generation) was released in 2017 as the ...
The current official highest registered air temperature on Earth is 56.7 °C (134.1 °F), recorded on 10 July 1913 at Furnace Creek Ranch, in Death Valley in the United States. [ 1] For few years, a former record that was measured in Libya had been in place, until it was decertified in 2012 based on evidence that it was an erroneous reading.