The hot air balloon is the first successful human-carrying flight technology. The first untethered manned hot air balloon flight was performed by Jean-François Pilâtre de Rozier and François Laurent d’Arlandes on November 21, 1783, in Paris, France, in a balloon created by the Montgolfier brothers. The first hot-air balloon flown in the United States was launched from the Walnut Street Jail in Philadelphia on January 9, 1793 by the French aeronaut Jean Pierre Blanchard.
A hot air balloon consists of a bag called the envelope that is capable of containing heated air. Suspended beneath is a gondola or wicker basket (in some long-distance or high-altitude balloons, a capsule), which carries passengers and (usually) a source of heat, in most cases an open flame. The heated air inside the envelope makes it buoyant since it has a lower density than the relatively cold air outside the envelope. As with all aircraft, hot air balloons cannot fly beyond the atmosphere.
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The dome-like, glass structures of the original plan, however, have been replaced with a “photovoltaic integrated canopy skin” that drapes over the buildings like a tent. The canopy skin will allow for the generation of renewable energy on the site, and regulates “indoor climate, air quality and sound.”
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Focusing on creating a sustainable campus, the proposal features a heavily landscaped master plan, as well as a focus on walkable, bike-friendly circulation throughout the campus.
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As a whole, the reduced scale of the plan demonstrates a friendlier, more intimate scale than the previous proposal – perhaps in response to earlier concerns from Mountain View regarding business diversity and appropriateness to site.
Many of us live and die by our spreadsheets, but every true spreadsheet ninja has to start somewhere. These helpful, Excel shortcuts can help you save time and get more done. From highlighting every cell at once to quickly copying formulas, they’re a refresher for experts and worth remembering for beginners.
Under most circumstances, you wouldn’t go looking for broken things at a yard sale or thrift store. Unless they’re damaged tools from companies like Craftsman. Then you might be able to exchange them for all new ones.