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Dichlorodifluoromethane (R-12) is a colorless gas popularly known by the genericized brand name Freon (as Freon-12).It is a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant.
At the time of launch, Microsoft deemed Windows 7 (with Service Pack 1) and Windows 8.1 users eligible to upgrade to Windows 10 free of charge, so long as the upgrade took place within one year of Windows 10's initial release date. Windows RT and the respective Enterprise editions of Windows 7, 8, and 8.1 were excluded from this offer.
Windows 98 Second Edition — June 10, 1999 Windows 98 Second Edition; 2222A Windows 2000: Windows NT 5.0: February 17, 2000 NT 5.0 Windows 2000 Professional; 2195 IA-32: July 13, 2010 Windows Me: Millennium: September 14, 2000 4.90 Windows Me; 3000 IA-32: July 11, 2006 Windows XP: Whistler: October 25, 2001 NT 5.1 Windows XP Starter; Windows ...
The first CFCs were synthesized by Frédéric Swarts in the 1890s. In the late 1920s, a research team was formed by Charles Franklin Kettering in General Motors to find a replacement for the dangerous refrigerants then in use, such as ammonia . [ 3 ]
Windows XP Media Center Edition 2005 — [31] Slalom Longhorn Media Center Edition Dropped Longhorn was planned to have a Media Center edition, but when Longhorn turned into Vista, it was scrapped and instead the Media Center application was available in Home Premium and Ultimate editions. Emerald — Windows XP Media Center Edition 2005 Update ...
Plan 9 Second Edition (Commercial second release version was made available to the general public.) Ultrix 4.5 (Last major release) Windows 95; 1996 AIX 4.2; Debian 1.1; JN [45] – microkernel OS for embedded, Java apps; Mac OS 7.6 (First officially-named Mac OS) OS/2 Warp 4.0; Palm OS; RISC OS 3.6; Windows NT 4.0; Windows CE 1.0; 1997 AIX 4.3 ...
Freons are responsible for the formation of the ozone hole. The Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol are international agreements that oblige signatory countries to limit the emission of ozone-depleting gases.
Windows 1.0, the first independent version of Microsoft Windows, released on November 20, 1985, achieved little popularity. The project was briefly codenamed "Interface Manager" before the windowing system was implemented—contrary to popular belief that it was the original name for Windows and Rowland Hanson, the head of marketing at Microsoft, convinced the company that the name Windows ...