Search results
Results from the WOW.Com Content Network
A Qantas Airbus A380-800, the aircraft type that operated these flights from 2014-2020.. Qantas Flight 7 (QF7/QFA7) [a] and Qantas Flight 8 (QF8/QFA8) [a] are flights operated by Australian airline Qantas between Sydney Airport and Dallas/Fort Worth International Airport, which, from 2013 to 2016, were the longest regularly scheduled non-stop commercial flights in the world.
Crown glass is a type of optical glass used in lenses and other optical components. It has relatively low refractive index (≈1.52) and low dispersion (with Abbe numbers between 50 and 85). Crown glass is produced from alkali-lime silicates containing approximately 10% potassium oxide and is one of the earliest low dispersion glasses .
The articles mentioned how glass cockpit components had the added benefit of being a few hundred pounds lighter than the original flight instruments and support systems used in the Space Shuttles. The Space Shuttle Atlantis was the first orbiter to be retrofitted with a glass cockpit in 2000 with the launch of STS-101.
Kolorimeter Leitz Wetzlar Trinovid 8×20 C binoculars expanded [1] Leitz compound monocular microscope. Germany. 1922. Perea-Borobio Collection. Carl Kellner, mechanic and self-taught mathematician, published his treatise Das orthoskopische Ocular, eine neu erfundene achromatische Linsencombination (The orthoscopic ocular, a newly invented achromatic lens combination) in 1849, describing a new ...
The Obiekt 785, or Object 785 (Объект 785), was a Soviet experimental main battle tank built in the late 1970s. [1] It was an improved variant of the T-80B, with seven road wheels.