Encyclopedia results for Dioptra

1. Dioptra
   
   A dioptra is a Hellenistic civilization classical astronomical and surveying instrument, dating from the 3rd century AD 3 sup rd sup   century BCE . The dioptra was a sighting tube or, alternatively ..
   
   
   
   
2. Diopter (disambiguation)
   
   A close up lens used in photography A theodolite or similar surveyor s angle measuring device A dioptra ..
   
   
   
   
3. Hero the younger
   
   the Dioptra . Literature Geodesie de Heron de Byzance , published by Vincent in Notices et extraits ..
   
   
   
   
4. Chorobates
   
   . See also Groma surveying Groma Dioptra Chorography Hodometer References 1728 M. J. T. Lewis ..
   
   
   
   
5. Valentin Stansel
   
   works Dioptra geodetica Prague, 1652 or 1654 Propositiones selenegraphicæ, sive de luna Olmütz, 1655 ..
   
   
   
   
6. Francis Mezger
   
   1690 , from the Latin Dioptra politices religiosæ Salzburg, 1694 , and Exercitia spiritualia ib ..
   
   
   
   
7. Speculum (medical)
   
   or dioptra . ref The Compact Edition of the Oxford English Dictionary , Oxford University Press ..
   
   
   
   
8. Roman aqueduct
   
   of the theodolite was known as the dioptra , and was used to measure vertical angles. Many ..
   
   
   
   
9. Hero of Alexandria
   
   s of diverse objects. On the Dioptra , a collection of methods to measure lengths. In this work the odometer and the dioptra is described, an apparatus which resembles the theodolite . Belopoeica ..
   
   
   
   
10. Triangulation
    
    using a sighting rod that the Greeks called a dioptra , the forerunner of the Arabic alidade ... using this instrument is known, the Dioptra of Hero of Alexandria c. 10 70 AD , which survived in Arabic ..
    
    
    
    
11. Alidade
    
    called ??????? , dioptra , and linea fiduciae , fiducial line . The earliest alidades consisted ..
    
    
    
    
12. Gromatici
    
    in a gromatic instrument perhaps the dioptra , resembling the modern theodolite for the treatises ..
    
    
    
    
13. Astrolabe
    
    of the planisphere and dioptra , the astrolabe was effectively an analog calculator capable of working ..
    
    
    
    
14. Theodolite
    
    astronomical instrument called a dioptra . Prior to the theodolite, instruments such as the geometric ..
    
    
    
    
15. Analog computer
    
    centuries BCE and is often attributed to Hipparchus . A combination of the planisphere and dioptra ..
    
    
    
    
16. Odometer
    
    a similar device in chapter 34 of his Dioptra . The machine was also used in the time of Roman ..
    
    
    
    
17. Al-Khazini
    
    astronomy triquetrum , dioptra , a triangle triangular instrument he invented, the quadrant ..
    
    
    
    
18. Roman technology
    
    , dioptra and odometer in building aqueducts and other large structures. They are described and discussed ..
    
    
    
    
19. History of structural engineering
    
    surveying techniques based on the dioptra , groma and chorobates . The Inventions in medieval Islam ..
    
    
    
    
20. Hipparchus
    
    , called dioptra , to measure the apparent diameter of the Sun and Moon. Pappus of Alexandria described ..
    
    
    
    

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