Candidates for Space Observatory Optics: Pyrex and ULE Glasses Withstand Greater Force in Vacuum than Air
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منابع مشابه
Lighter than Air Craft Using Vacuum
Ever since his earliest times, man must have dreamed of copying the birds; of flying, of gaining mastery over the third dimension of space. The earliest practicable route to achieve the aim of flying was in the use of balloons. The first balloons were hot-air balloons; they relied on the lower density of hot air, compared to that of the surrounding air, to obtain the lift they needed. Balloons ...
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ژورنال
عنوان ژورنال: MRS Bulletin
سال: 2007
ISSN: 0883-7694,1938-1425
DOI: 10.1557/mrs2007.202