Claudius Ptolemy drew closely from Hipparchus as he prepared his magnum opus, the “Almagest,” and other books. In “Planisphaerium,” printed in a hundred and fifty A.D., Ptolemy offers an entire description, virtually definitely based on concepts from Hipparchus, of the mathematical techniques required to project points on the celestial sphere. The guide gave the impression to be a handbook to construct a working instrument, however no proof exists suggesting he actually built an astrolabe. He did, nonetheless, design and construct the armillary sphere, a fancy predecessor of the astrolabe
The Sensible Dwelling just isn’t only a residence hall, though. It’s a dwell-in laboratory and test mattress — a principle piece of a larger smarter dwelling program at Duke. More than one hundred college students, principally undergrads from a wide range of educational disciplines, are finishing up analysis on what it means to stay well.
About This QuizTaiwanese producer Acer made an formidable entry into the tablet area this yr, introducing not one — however four — different tablet product strains that give buyers a alternative between two totally different operating programs and two very different user experiences. See what you understand concerning the Acer Iconia.
Excessive-Velocity Gardening: The straightforward Strategy to Make CompostMake compost the lazy manner by layering leaves, lawn clippings, and kitchen waste in an out-of-the-way spot. Then merely go away it till it’s ready. Nature’s recyclers will take natural matter no matter how it’s offered and switch it into wealthy, dark compost. This process simply takes longer in an untended pile.
Extra serious than a one-time mild head damage are the concussions associated to sports accidents, consultants believe. Greater than half of retired soccer gamers skilled concussions throughout their playing days, and as a bunch these gamers are more likely to have memory issues. In actual fact, many neurologists consider that concussions and repeated blows to the pinnacle do lasting harm to the brain and the reminiscence processes. For example, the “punch drunk” syndrome of speech and 경기도폰테크 movement impairments is quite typical of retired boxers who sustained repeated blows to the head during their careers.