1. Apollonius, Conics Book IV I). Now, Apollonius reports that conon of samos treated the case where a or circumference of a circle meets another conic section, but that Conon's demonstrations were incorrect http://www.greenlion.com/conics-4.html

[this web page last updated 31 Dec 2003] Apollonius's Conics Book IV A companion volume to our edition of Conics Books I-III Ý The Green Lion announces a first English translation of Book IV of Conics, translated and annotated by Michael N. Fried, as a companion volume to our edition of Conics Books I-III. Conics IV deals with the way pairs of conic sections can intersect or touch each other. In his Introduction to the translation, Fried shows that this book has been misappraised by scholars too much inclined to see Apollonius's work merely as a precursor to the analytic geometry of the seventeenth century. He writes, "Playfulness is one of the real delights of Book IV. One can see in this playfulness the artful way Apollonius contends with the main challenge of the book-the problem of how the opposite sections, specifically, meet other sections of a cone and other opposite sections- how he gives this problem both foundation and context." 7 x 10", 104 pages.

2. History Of Mathematics: Greece 610c. 547) Pythagoras of Samos (c. 570-c Chrysippus (280-206) conon of samos (c. 245) Apollonius of Perga (c http://aleph0.clarku.edu/~djoyce/mathhist/greece.html

Greece Cities Abdera: Democritus Alexandria : Apollonius, Aristarchus, Diophantus, Eratosthenes, Euclid , Hypatia, Hypsicles, Heron, Menelaus, Pappus, Ptolemy, Theon Amisus: Dionysodorus Antinopolis: Serenus Apameia: Posidonius Athens: Aristotle, Plato, Ptolemy, Socrates, Theaetetus Byzantium (Constantinople): Philon, Proclus Chalcedon: Proclus, Xenocrates Chalcis: Iamblichus Chios: Hippocrates, Oenopides Clazomenae: Anaxagoras Cnidus: Eudoxus Croton: Philolaus, Pythagoras Cyrene: Eratosthenes, Nicoteles, Synesius, Theodorus Cyzicus: Callippus Elea: Parmenides, Zeno Elis: Hippias Gerasa: Nichmachus Larissa: Dominus Miletus: Anaximander, Anaximenes, Isidorus, Thales Nicaea: Hipparchus, Sporus, Theodosius Paros: Thymaridas Perga: Apollonius Pergamum: Apollonius Rhodes: Eudemus, Geminus, Posidonius Rome: Boethius Samos: Aristarchus, Conon, Pythagoras Smyrna: Theon Stagira: Aristotle Syene: Eratosthenes Syracuse: Archimedes Tarentum: Archytas, Pythagoras Thasos: Leodamas Tyre: Marinus, Porphyrius Mathematicians Thales of Miletus (c. 630-c 550)

3. Untitled angry pharaoh and a very bald queen. conon of samos, an astronomer and mathematician who who worked in can imagine a desperate Conon in fear of his life raising his http://www.perkins-observatory.org/2001.columns/4-29-2001

Astronomy column for 4/29/2001 Bernice's Hair The bright star Arcturus in the constellation Bootes is rising in the east right now, a sure sign that spring is finally here and that summer can't be far behind. Above Arcturus is one of the strangest sights in the sky a large fuzzy patch that resolves into a dozen or so stars for the sharp-eyed observer. The simplest pair of binoculars will reveal even more stars. The constellation associated with the fuzzy patch, called Coma Berenices, has a long and checkered history. Few fuzzy patches get their own names, let alone their own constellations. Coma Berenices, or Berenice's Hair, did, but it took a long time to get there. Also, virtually all the constellations are named after great heroes, animal and human, from ancient mythology. Coma is the only constellation named after a real, historical person. For the longest time, Berenice's Hair wasn't considered a constellation at all. The ancient Greeks hooked the fuzzy patch up with nearby Leo, the Lion, picturing it as a puff of fur at the end of the lion's tail. By 150 AD, Ptolemy, the greatest of the Greek astronomers, refers to the stars as "a nebulous mass, called the lock,", i.e., of hair. Even earlier, around 200 BCE, the Greek scientist and writer Eristosthenes identified the puff of stars as Berenice's Hair in his famous work on constellation science and mythology called The Catasterisms. Both astronomers worked in Alexandria, the great seat of ancient scholarship at the mouth of the Nile River in northern Egypt. The Berenice in question must surely be Queen Berenice II of Egypt, who lived during the third century BCE, just before Eristosthenes wrote his book. By the first century AD, the designation was set forever by the Roman poet Hyginus in his Poetic Astronomy, even though he still considered the star patch as part of Leo. It took another 1500 years for the stellar grouping to become a constellation in its own right. In 1551, the Dutch star mapper Gerardus Mercator grabbed a few nearby stars and combined them with the fuzzy patch to form the official constellation Coma Berenices. In the process, the lion finally lost its tail. The real mystery is how the stars got to be associated with the hair of an ancient Egyptian Queen in the first place. About Queen Berenice little is known. During the third century BCE, she was first the sister and then the wife of the Egyptian pharaoh Ptolemy III Euergetes. (The pharaohs often married their close relatives to keep the royal bloodline pure.) Berenice was something of a warrior and horsewoman, distinguishing herself in battle before she married Ptolemy. According to Hyginus, Ptolemy left his new wife just a few days after their nuptials to make war on Asia. Berenice vowed to the gods that she would cut off her hair if Ptolemy returned safely. This had to be considered a major sacrifice. She was apparently quite attached to her long, amber-colored tresses. At the pharaoh's safe return, the now-hairless Berenice placed her hair on the altar of the temple dedicated to her mother Arisinoe. The next day, the hair was gone. The temple priests clearly had some serious explaining to do to a very angry pharaoh and a very bald queen. Conon of Samos, an astronomer and mathematician who who worked in Alexandria, came up with the life-saving solution. He pointed to the fuzzy patch at the tail of Leo and told the royal couple that Berenice's hair had gone to join the stars. The story has the ring of truth to it. We can imagine a desperate Conon in fear of his life raising his eyes toward heaven for inspiration and finding there a glorious patch of light.

4. Conon conon of samos. Born about 280 BC in Samos Died about 220 BCin (possibly) Alexandria, Egypt. Show birthplace location. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Conon.html

Conon of Samos Born: about 280 BC in Samos Died: about 220 BC in (possibly) Alexandria, Egypt Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Conon of Samos is said to have served as court astronomer to Ptolemy III (also known as Ptolemy Euergetes) in Alexandria, see for example [1] and [2]. However, Neugebauer [5] claims that:- It is only a modern invention to make Conon a 'court astronomer'; no such rank existed in Ptolemaic Egypt... Conon is remembered particularly for Callimachus's poem Berenice's Lock about the constellation Coma Berenices. It may be as a result of this poem that Conon is well known to Virgil and Propertius The story of the constellation Coma Berenices is that Queen Berenice II, the wife of Ptolemy Euergetes, swore a vow that she would dedicate a lock of her hair to the temple if her husband returned victorious from the Third Syrian War. The war was fought by Ptolemy Euergetes to avenge the murder of his sister in Syria. When he returned victorious in 245 BC, Berenice cut off the lock of her hair and placed it in the temple. The following day the lock of hair had vanished and Conon declared that he could see it in the stars between Virgo, Leo and Bootes. From that time on the constellation has been known as Coma Berenices. Conon was a lifelong friend of Archimedes and the two exchanged mathematical ideas.

5. Conon Of Samos --  Encyclopædia Britannica MLA style " conon of samos." Encyclopædia Britannica. 2004 APA style conon of samos. Encyclopædia Britannica. Retrieved April 25, 2004, from Encyclopædia Britannica Premium http://www.britannica.com/eb/article?eu=26318&tocid=0&query=cono

6. References For Conon Biography in Encyclopaedia Britannica. Books GL Geison, Did conon of samostransmit Babylonian observations, Isis (3) (193) 58 (1967), 398401. http://www-gap.dcs.st-and.ac.uk/~history/References/Conon.html

References for Conon Biography in Dictionary of Scientific Biography (New York 1970-1990). Biography in Encyclopaedia Britannica. Books: G L Geison, Did Conon of Samos transmit Babylonian observations, Isis T L Heath, A History of Greek Mathematics (2 Vols.) (Oxford, 1921). O Neugebauer, A history of ancient mathematical astronomy (New York, 1975). Main index Birthplace Maps Biographies Index History Topics ... Anniversaries for the year JOC/EFR April 1999 School of Mathematics and Statistics University of St Andrews, Scotland The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/References/Conon.html

7. Conon Of Samos - Wikipedia, The Free Encyclopedia Other languages Slovenina. conon of samos. From Wikipedia, the free encyclopedia. conon of samos ( circa 280 BC http://en2.wikipedia.org/wiki/Conon_of_Samos

Conon of Samos From Wikipedia, the free encyclopedia. Conon of Samos (circa 280 BC - circa: 220 BC ) was a Greek mathematician and astronomer Conon was born on Samos Ionia and possibly died in Alexandria Ptolemaic Egypt edit External link University of St Andrews ' page: http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Conon.html Views Article Discussion Edit History Personal tools Log in Navigation Main Page Community portal Current events Recent changes ... Donations Search Toolbox What links here Related changes Special pages Other languages This page was last modified 09:05, 12 Jun 2003. All text is available under the terms of the GNU Free Documentation License (see for details). About Wikipedia

8. Conon Of Samos --  Encyclopædia Britannica conon of samos Encyclopædia Britannica Article. MLA style conon of samos. Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service. http://www.britannica.com/eb/article?eu=26318

9. Conon Biography of Conon (280BC220BC) conon of samos. Born about 280 BC in Samos conon of samos is said to have served as court astronomer to Ptolemy III (also known as Ptolemy Euergetes) in http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Conon.html

Conon of Samos Born: about 280 BC in Samos Died: about 220 BC in (possibly) Alexandria, Egypt Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Conon of Samos is said to have served as court astronomer to Ptolemy III (also known as Ptolemy Euergetes) in Alexandria, see for example [1] and [2]. However, Neugebauer [5] claims that:- It is only a modern invention to make Conon a 'court astronomer'; no such rank existed in Ptolemaic Egypt... Conon is remembered particularly for Callimachus's poem Berenice's Lock about the constellation Coma Berenices. It may be as a result of this poem that Conon is well known to Virgil and Propertius The story of the constellation Coma Berenices is that Queen Berenice II, the wife of Ptolemy Euergetes, swore a vow that she would dedicate a lock of her hair to the temple if her husband returned victorious from the Third Syrian War. The war was fought by Ptolemy Euergetes to avenge the murder of his sister in Syria. When he returned victorious in 245 BC, Berenice cut off the lock of her hair and placed it in the temple. The following day the lock of hair had vanished and Conon declared that he could see it in the stars between Virgo, Leo and Bootes. From that time on the constellation has been known as Coma Berenices. Conon was a lifelong friend of Archimedes and the two exchanged mathematical ideas.

10. Conon Of Samos - Encyclopedia Article About Conon Of Samos. Free Access, No Regi encyclopedia article about conon of samos. conon of samos in Free onlineEnglish dictionary, thesaurus and encyclopedia. conon of samos. http://encyclopedia.thefreedictionary.com/Conon of Samos

Dictionaries: General Computing Medical Legal Encyclopedia Conon of Samos Word: Word Starts with Ends with Definition Conon of Samos (circa 280 BC Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 330s BC 320s BC 310s BC 300s BC 290s BC - 280s BC - 270s BC 260s BC 250s BC 240s BC 230s BC 285 BC 284 BC 283 BC 282 BC 281 BC 280 BC 279 BC 278 BC 277 BC 276 BC 275 BC Events Battle of Heraclea: The Greeks, led by Pyrrhus of Epirus, defeat with severe casualties a Roman army the first time these cultures meet in battle. Aristarchus uses the size of the Earth's shadow on the Moon to estimate that the Moon's radius is one-third that of the Earth. Achaean League refounded. Click the link for more information. - circa: 220 BC Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 270s BC 260s BC 250s BC 240s BC 230s BC - 220s BC - 210s BC 200s BC 190s BC 180s BC 170s BC Years: 225 BC 224 BC 223 BC 222 BC 221 BC - 220 BC - 219 BC 218 BC 217 BC 216 BC 215 BC Events October/November - Pharaoh Ptolemy IV of Egypt marries his sister, who rises to the throne as Arsinoe III of Egypt. Eratosthenes measures the size of the Earth.

11. History Of Samos This is the Samian Society's of Ottawa and District of the rive Imvras and was considered as the protector of Samos. Thus, her sacred bird, the peacock Aristarchus of Samos. Pithagoras of Samos. conon of samos. Melissus of Samos http://www.greece.org/samians/samoshistory.htm

In ancient times, Samos, although small, played a really significant role in culture and politics not only for the region of Ionia, but for the entire ancient Greece. From the evidence that has been found, derives that human beings have lived on Samos since the 3rd millenium BC, if not earlier. Its favourable position at the sea crossroad that link central Greece with East played a significant role for its development. Several megatheriums and other rare species of the prehistorical era lived on this island. Bones that found the previous century decorate the show -cases of the paleontological museums of USA and Europe. Some of these paleontological findings are in the museum of Mytilinion of Samos. Bones from the Paleontological Museum of Mytilinion Samos Traces of the human race have been found at the Hill of Castro from the late Neolithic era (fourth millennium B.C.). The first inhabitants belong to the Pelasgic tribes that spread the worship of Hera. According to mythology, Hera was born at the banks of the rive Imvras and was considered as the protector of Samos. Thus, her sacred bird, the peacock, often appeared on currency and escutcheons of the hegemony of Samos later.

12. Conon Of Samos conon of samos. conon of samos (circa 280 BC circa 220 BC) was aGreek mathematician and astronomer. Conon was born on Samos, Ionia http://www.fact-index.com/c/co/conon_of_samos.html

Main Page See live article Alphabetical index Conon of Samos Conon of Samos (circa 280 BC - circa: 220 BC ) was a Greek mathematician and astronomer Conon was born on Samos Ionia and possibly died in Alexandria Ptolemaic Egypt External link University of St Andrews ' page: http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Conon.html This article is from Wikipedia . All text is available under the terms of the GNU Free Documentation License

13. Conoy Definition Of Conoy. What Is Conoy? Meaning Of Conoy. What Does Conoy Mean enc.) Conominee. Conon ( enc.) conon of samos ( enc.) Conondale National Park http://www.thefreedictionary.com/Conoy

Dictionaries: General Computing Medical Legal Encyclopedia Conoy Word: Word Starts with Ends with Definition Noun Conoy - a member of an Algonquian people formerly living in Maryland between Chesapeake Bay and the Potomac river; allies of the Nanticoke people Algonquian Algonquin - a member of any of the North American Indian groups speaking an Algonquian language and originally living in the subarctic regions of eastern Canada; many Algonquian tribes migrated south into the woodlands from the Mississippi River to the Atlantic coast Legend: Synonyms Related Words Antonyms Some words with "Conoy" in the definition: Algonquian Algonquian language Algonquin Nanticoke Previous General Dictionary Browser Next conodont Conodonta Conodontophorida ... conquistador Full Dictionary Browser Conoidal Conoidic Conolophus (enc.) Conominee Conon (enc.) Conon of Samos (enc.) Conondale National Park (enc.) Conopodium Conopodium denudatum Conopophagidae (enc.) Conor Cruise O'Brien (enc.) Conor Oberst (enc.) Conormal (enc.) Conormal category (enc.) Conormal epimorphism (enc.)

14. Berenice The hair having by some unknown means disappeared, conon of samos, the mathematicianand astronomer, explained the phenomenon in courtly phrase, by saying that http://www.fact-index.com/b/be/berenice.html

Main Page See live article Alphabetical index Berenice Berenice has been the name of several Ptolemaic queens in Cyrenaica and Egypt and several Herodian Jewish princesses in Judea. Berenike is the Macedonian form of the Greek name Pherenike Table of contents 1 Ptolemaic Berenices 2 Judean Berenices 3 Berenice the seaport 4 See also Ptolemaic Berenices Berenice I , wife of an obscure Macedonian soldier, came to Egypt as a lady-in-waiting to Eurydice, bride of Ptolemy Soter , Alexander's general and founder of the Ptolemaic dynasty Before long, Berenice caught the eye of the king. Her son, Ptolemy Philadelphus , was recognized as heir in preference to Eurydice's children. Ptolemy named for her the new port he built on the Red Sea (see below). So great was her ability and her influence that King Pyrrhus of Epirus also gave the name Berenicis to a new city. Her son Philadelphus decreed divine honours to her on her death. (See Theocritus Idylls xv. and xvii.) Berenice was the daughter of Ptolemy Philadelphus , wife of the Seleucid monarch Antiochus II Theos in modern-day Syria , who, following an agreement with Ptolemy ( 249 BC ), had divorced his wife Laodice and transferred the succession to Berenice's children.

15. Conon Of Samos Article on conon of samos from WorldHistory.com, licensed from Wikipedia,the free encyclopedia. Return to Article Index conon of samos. http://www.worldhistory.com/wiki/C/Conon-of-Samos.htm

World History (home) Encyclopedia Index Localities Companies Surnames ... This Week in History Conon of Samos Conon of Samos (circa 280 BC - circa: 220 BC ) was a Greek mathematician and astronomer. Conon was born on Samos Ionia and possibly died in Alexandria Ptolemaic Egypt External link University of St Andrews ' page: http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Conon.html Sponsored Links Advertisements Harry Potter and the Prisoner of Azkaban (#3) unabridged on CD DVD New Releases at Barnes and Noble ... at DVDPlanet Find lost family and friends This article is licensed under the GNU Free Documentation License You may copy and modify it as long as the entire work (including additions) remains under this license. You must provide a link to http://www.gnu.org/copyleft/fdl.html To view or edit this article at Wikipedia, follow this link World History How to cite this page Encyclopedia Index ... Contact Us

16. History Of Alexandria: The Ptolemaic Legacy Ellipse, Parabola, and Hyperbola) were carried out by conon of samos and Appolonius of Perga the sixteenth century. Aristarchus of Samos, Eratosthenes' coworker in Alexandria, had http://ce.eng.usf.edu/pharos/Alexandria/History/legacy.html

The Ptolemaic Legacy The Mouseion / Library When Ptolemy Soter assumed power, he asked Demitrius Phalerus , a follower of Aristotle , to found a library system at Alexandria that would rival that of Athens. The Alexandrian Mouseion , however, far superseded its Greek prototype to become an intellectual and scientific institution; a university system rather than a bibliotheca. It was here, in the third century BC, that Archimedes invented the pump still in use today and known as Archimedes' screw , and, in the second century BC, that Hypsicles first divided the circle of the zodiac into 360 degrees. Ancient historians claim that the library's 500,000 book collection was so comprehensive that no manuscript was available in any library worldwide that was not available in Alexandria. Mathematics Have you ever heard of Euclidean Geometry? Did you know that Euclid lived, developed his theories, and wrote Elements at the Alexandria Mouseion during the reign of Ptolemy II Philadelphus? In his Elements , Euclid provided a comprehensive analysis of geometry, proportions, and theory of numbers. His other notable contribution

17. List Of Astronomical Topics Compton Gamma ray Observatory . Compton effect . Compton scattering . Conenebula . conon of samos . Constellation . Contact binary . Coordinate grid. http://www.worldhistory.com/wiki/L/List-of-astronomical-topics.htm

World History (home) Encyclopedia Index Localities Companies Surnames ... This Week in History List of astronomical topics This page aims to list articles on Wikipedia that are related to Astronomy Astrophysics and Cosmology . This is so that those interested in the subject can monitor changes to the pages by clicking on Related changes in the sidebar. The list is not necessarily complete or up to date - if you see an article that should be here but isn't (or one that shouldn't be here but is), please do update the page accordingly. Three astronomy related WikiProjects are being developed, please visit WikiProject Astronomical Objects, WikiProject Constellations, and WikiProject Telescopes. 1 Ceres 2 Pallas 3 Juno 4 Vesta 10 Hygeia 14 Herculi 15 Eunomia 16 Cygni 16 Psyche 21 Lutetia 24 Themis 31 Euphrosyne 34 Tauri 45 Eugenia 47 Ursae Majoris 48 Doris 51 Pegasi 52 Europa 55 Cancri 61 Cygni 61 Cygni A 61 Cygni B 65 Cybele ... 70 Virginis 71 Niobe 87 Silvia 90 Antiope 92 Undina 94 Aurora 95 Arethusa 106 Dione 110 Lidia 154 Bertha 221 Eos 243 Ida 253 Mathilde 324 Bamberga 433 Eros 451 Patientia 511 Davida 588 Achilles 624 Hektor 674 Rachele 704 Interamnia 944 Hidalgo 951 Gaspra 1221 Amor 1566 Icarus 1620 Geographos 1685 Toro 1862 Apollo 2060 Chiron 2062 Aten 3001 Michelangelo 3018 Godiva 3200 Phaethon 3753 Cruithne ... 4179 Toutatis 4544 Xanthus 4593 Reipurth 4769 Castalia 5145 Pholus 5261 Eureka 5381 Sekhmet 5535 Annefrank 7066 Nessus 11169 Alkon 18610 Arthurdent 28978 Ixion A A New Theory of Magnetic Storms A-type asteroid Aaronson, Marc

18. ARCHIMANDRITE Hiero, king of Syracuse, and Gelo his son. He studied re Alexandria and doubtless met there conon of samos, whom he (n http://www.1911encyclopedia.org/A/AR/ARCHIMANDRITE.htm

ARCHIMANDRITE ARCHIMANDRITE ARCHILOCHUS ARCHIMEDES

19. TMTh:: CONON OF SAMOS GEOGRAPHER. conon of samos (fl. 3rd century BC) Life Conon lived mostlyin Alexandria, where he was court astronomer to Ptolemy III Euergetes. http://www.tmth.edu.gr/en/aet/3/27.html

Home Ancient Greek Scientists AGRICULTURALISTS ARCHITECTS ... PHYSICISTS GEOGRAPHER CONON OF SAMOS (fl. 3rd century BC) Life Conon lived mostly in Alexandria, where he was court astronomer to Ptolemy III Euergetes. He succeeded Euclid at the Alexandrian School. Although he is chiefly known as an astronomer and astro-meteorologist, he also worked on many mathematical problems with Archimedes, who had been a student of his. He is cited by Apollonius of Perga and Pappus. He discovered the Spiral of Archimedes, a curve that was used extensively by Archimedes in some of his mathematical investigations. Conon discovered the constellation which he called Coma Berenices ("Berenice's Hair"), thus immortalising Ptolemy's wife, Queen Berenice, and her luxuriant tresses. Callimachus wrote a poem under this title, which was translated into Latin by Catullus. Work Conon's principal writings are: "On astronomy": 7 books. Dedicated to Ptolemy III Euergetes. Contained among other matters some of his own observations on eclipses. Hipparchus based his work on these books. Lost. "Parapegma": Calendar of meteorological forecasts and of the risings and settings of the stars. Based on observations made in Italy and Sicily at the time of Ptolemy. (It was then that he made the acquaintance of Archimedes.) Lost.

20. TMTh:: ARCHIMEDES OF SYRACUSE He studied at Alexandria, in Egypt, where he met Euclid s successors Eratosthenesand Dositheus; he was also a friend and associate of conon of samos. http://www.tmth.edu.gr/en/aet/1/13.html

Home Ancient Greek Scientists AGRICULTURALISTS ARCHITECTS ... PHYSICISTS MATHEMATICIAN ARCHIMEDES OF SYRACUSE (fl. 287-212 BC) Life A commentary on Archimedes is found in the work of 6th century writer Eutocius of Ascalon, who also mentions a biography (now lost) of the celebrated mathematician written by Heraclides. Work The principal extant works are: "On the Sphere and Cylinder": books I and II. Book I: Quadrature of the parabola, 6 definitions, 5 propositions (the 5th is the axiom of continuity), 44 theorems. "Measurement of the Circle": 3 theorems are preserved. "On Conoids and Spheroids": The book contains 32 theorems and 1 corollary following the 6th theorem. Some of the theorems use trigonometric functions and integral calculus. "On Spirals": The book contains 28 theorems and 6 corollaries. "On the Equilibrium of Planes or Centres of Gravity of Planes or Mechanics": Books I and II. Book I: Theory of levers. Contains 7 postulates, 15 theorems and 2 corollaries following the 5th theorem. Book II: Centre of gravity of paraboloid plane sections. 10 theorems. "The Sand-Reckoner" "Quadrature of the Parabola" "On Floating Bodies" (Hydrostatics) "On the Method of Mechanical Theorems" "Book of Lemmas" "The Cattle Problem" "On the Heptagon in a Circle" "The Water Clock" "On Tangential Circles" "Principles of Geometry" Lost works: "On Triangles" "On Quadrangles" "On 13 semi-regular solids" "Arithmetic" "On Balances or Levers" "Centres of Gravity" "On Sundials" "Catoptrica" (Optics) "Isoperimetrics"

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