<data wiki-url="" wiki-section="Space History Timeline">

<event start="2772 BC" title="Egypt uses a calendar of 365 days">
     Previously they had a 24 hour day in which the length of hours changes with the seasons (12 long hours of daylight during the Summer).  Eventually, they borrowed the idea of having static-length hours from Babylon (who had a day that lasted 10 uniform hours).  
<event start="620 BC" end="546 BC" isDuration="true" title="Thales of Miletus Starts Being Wise" link="">
     A Greek Ionian, was the first to investigate basic principles. Founder of natural philosophy. He was the first to predict solar eclipse accurately and align the dates of the solstices. He is said to have discovered correlations between the seasons and the number of days in a year. He is also said to have investigated history, sciences, mathematics, engineering, geometry, and politics. Caeruleus.regi 19:40, 2 February 2009 (UTC)  
<event start="610 BC" end="546 BC" isDuration="true" title="Anaximander of Miletus" link="">
       Anaximander was a Greek philosopher who lived in Turkey. He was a student of Thales, he wrote a book about the world. The book included the earth and  the heavens. He wassaid to be the first to draw an outline of earth and sea, which we call a map. he believed that mankind came from a specie of animal. He is known to have conducted the earliest recorded scientific experiment, which he observed the universe.  We have some few fragments of his books.  

<event start="580 BC" latestStart="572 BC" earliestEnd="500 BC" end="490 BC" isDuration="true" title="Pythagoras">

He was the first man to call himself a philosopher, or lover of wisdom. In addition, found evidence that the earth was round and was truly known for the Pythagorean theorem.  Pythagoras believed that everything was related to numbers.      

<event start="542 BC" title="The Decimal"> The basis for modern decimal notation was first introduced by Simon Stevin. An inscription dated from the 13th century BC showed that the Chinese used decimal system. They used a counting rods. The counting rods were made of bamboo or wood with the colors red or black. the red rods represented the positive numbers and the black rods represented the negative numbers. This method was intorduced the rod calculus. Rod calculus helped with addition, subtraction, multiplication, and division. The counting rods became the abacus. The chinese also came up with a straight forward decimal rank system. the straight forward decimal sytem gave a word for order of the number for example eleven would be ten one and ninety- eight would be nine ten eight. As the numbers got into the hundreds or thousands they were said the same way. For example 8,234 would be said as eight thousand two hundred three ten four. </event>

<event start="534 BC" latestStart="500 BC" earliestEnd="467 BC" end="428 BC" isDuration="true" title="Anaxagorus"> Not too much is definant about Anaxagorus especially the exact day he was bron and the day he died. He was however the person to state that the sun was a red-hot metal sphere and he explained that all matter orignally exists as atoms and molecules. Also, he was charged to death for thinking the sun was the size of Pelopern Sea (Never located this body of water), that the moon could have life, and that the earth was flat, but was hovering over a bed of air. </event>

<event start="490 BC" end="430 BC" isDuration="true" title="Empedocles">
     Empedocles was born in Acragas. He wrote poetry and 450 lines of which has been perserved by later writtings such as Simplicius, Aristole, Plutarch and others. He is considered the father of medicine in Italy. He is best known for his belief that all mater is composed of fouer elements: earth, fire, water, and air. The reason for the four element theary was the eleatic school. His hypothesis tried to explain the multitiude of complexity seen in the world as being made up of all other particles. He also believed that light travelled a finite velocity.  
<event start="470 BC" latestStart="469 BC" end="399 BC" isDuration="true" title="Socrates" link="">
      Greek orator and philosopher who tried to determine if virtue could be taught.  Known for the "Socratic Method" of logical questioning.  Tutored Plato.  

<event start="460 BC" end="362 BC" isDuration="true" title="Democritus">
Democritus was born in Greece. His father came from a wealthy family and past the inheritance down to him. He took his inheritance and put it towards knowledge and traveled to different countries. When he returned he became a philosopher. He did experiments and came to a result that atoms are not divisible. Democritus develop the idea about atoms and believed that everything is composed atoms.
<event start="428 BC" latestStart="423 BC" end="347 BC" earliestEnd="348 BC" isDuration="true" title="Plato" link="">
      Greek philosopher and mathematician who founded the "Academy" in Athens.  This was the first institute of higher learning in the western world.  He discussed the virtues of justice, wisdom, courage, and moderation.  Tutored Aristotle.  

<event start="390 BC" end="340 BC" isDuration="true" title="Eudoxus"> He was born on 390 BC in Cnidus, Asia Minor. He was an astronomer and a mathematician. He tried to make a model of the solar system. He thought pleasure was the main subject in life. Most of his works were lost. He was the most important mathematician. He died in 340 BC. </event>

<event start="384 BC" end="322 BC" isDuration="true" title="Aristotle" link="">
      Greek philosopher and teacher of Alexander the Great.  Together with Socrates and Plato, one of the most important founders of Western thought.  Perhaps one third of his writings still exist.  He explained how moral conduct contributes to better standard of living for society.  
<event start="324 BC" end="264 BC" isDuration="true" title="Euclid of Alexandria">
     Euclid of Alexandria was a mathematician that taught in Egypt.  He is the one that systematized geometry.  This is important, because we still use what he did today.  

<event start="310 BC" end="230 BC" isDuration="true" title="Aristarchus"> Aristartchus was a Greek astronomer and also a mathemitician. He was the first person to present a explicit argument for the heliocentric model and also was able to present the planets in the correct order. He found a way to measure he distance from the earth to sun and to the moon. He did also present a way to find the size of the moon and the sun. ( Sun is 19x further than the moon so the sun is 19x bigger than the moon. </event>

<event start="287 BC" end="212 BC" isDuration="true" title="Archimedes">
     Achimedes is a well known mathematicain and probably one of the greatest along with Isaac Newton and Carl Gauss. He was born on 287 B.C. in Syracause, Sicily, which is current day Italy. Through out his early years he went to Alexandria, Egypt to study for about 6 years. After to returning to Syracause in 263 B.C. he began putting his brillant mind to work with the invetion of the water screw, founding the principles of mechanics, found the method to find the center of gravity, finding surface area, and finding volume for geometrical figures. He died in 212 B.C. by being killed by a solider that didn't know who he was. 
<event start="276 BC" end="194 BC" earliestEnd="195 BC" isDuration="true" title="Eratosthenes" link="">
      Greek mathematician and "Natural Philosopher" that worked in Alexandria.  He estimated the circumference of the Earth by using geometry and shadows.  He also measured the tilt of the Earth's axis as 23.5 degrees.   

<event start="190 BC" end="120 BC" isDuration="true" title="Hipparchus of Bithynia" image=""> Hipparchus of Rhodes or of Bithynia was born in 190 BC and died in 120 BC. We know little about Hipparchus and the little information we know comes from Ptolemy's "Almagest". Some think that his most famous work was the discovery of precession, whichh involves the change in direction of the rotation of the Earth. He's known as Hipparchus of Rhodes also because he died in Rhodes. </event>

<event start="6 BC" latestStart="4 BC" end="33 AD" isDuration="true" title="Jesus">
   Jesus Christ was a Jewish political/religious/moral leader during the height of the Roman Empire, in and around what is now the nation of Isreal. Accounts of his life were used as the basis for all Christian religions. His birth was used as the approximate starting place for our modern calendar, thus BC means "Before Christ" and AD means "The Year of Our Lord (Anno Domini)".  He was crusified on Friday, April 3, 33ad.

<event start="83 AD" latestStart="85 AD" earliestEnd="165 AD" end="168 AD" isDuration="true" title="Claudius Ptolemy" link="">
      Ptolemy created a good model of a Geocentric Universe that was accepted until the time of Copernicus.  
<event start="595" title="Decimal used in India">
      The Mayans had been using the concept of Zero since before 300 BC, but scholars in India did not know this at the time.  
<event start="903" end="986" isDuration="true" title="Al Sufi" image="">

Abd al-Rahman Al-Sufi is also known as Azophi. He was a Persian astronomer that first describe the nebula in Andromeda. He also was the first astronomer to discover the Andromeda Galaxy. In the ladder of his years, he published his Book of the Fixed Stars, which contained hundreds of stars and constellations with traditional arabic names. EX: "Al..." </event>

<event start="1054" title="A Guest Star is seen and documented in China and Japan.">
   The object we call the Crab Nebula may have been seen for the first time as a very bright star (nova) which slowly dimmed over the next year or so.  The fact that we see the Crab Nebula in that same part of the sky suggests that the Guest Star's explosion was the beginning of the nebula's expansion.  Proving such a thing will be difficult.
<event start="Oct 14 1066 00:00:00 GMT" title="The battle of Hastings" link="">
      William of Normandy invaded England, defeated Harold, took over, and drove the English Language underground for the next century.   
<event start="1096" end="1099" isDuration="true" title="The First Crusade" link="">
     Pope Urban II upon all Christians to join a war against the Turks, promising those who died in the war would receive immediate forgiveness of their sins. For a while, the first Crusaders pursued a policy of terror against Muslims and Jews throughout Europe including mass executions, mutilation of cadavers and even cannibalism.  
<event start="Dec 24 1116 00:00:00 GMT" end="Oct 18 1216 00:00:00 GMT" isDuration="true" title="King John Lackland">
     Had the nickname of Lackland because, unlike his elder brothers, he received no land rights in the continental provinces. John "Plantagnenet" became king April 6 1199 on the death of his brother. He signed the Magna Carta on June 15, 1215, greatly limiting the rights of the king for the rest of English history, thus paving the way for a more Democratic nation.  
<event start="1147" end="1149" isDuration="true" title="The Second Crusade" link="">
     After a period of peace, Muslims took over the city of Edessa. A new crusade was called upon by Bernard of Clairvaux, under the kings Louis VII and Conrad III, armies marched to Jerusalem in 1147 but failed to win any major victories. However, Northern European Crusaders marched into Portugal and retook Lisbon from the Muslims in 1148.  
 <event start="1313" end="1377" isDuration="true" title="Edward III of England">
    Edward III, king of England from 1327 through 1377 is credited with beginning the "Hundred Years War" with France.  During his reign, orders of chivalry were created, and the powers of Parlaiment were increased.  Parlaiment now had 2 houses (Lords and Commons).  Warfare and the Plague were dominant issues effecting daily life.  As feudalism became less influential, the merchant class gained power.  English officially replaced French as the national language in 1362, for the first time since the Norman Invasion.  Women played a pivotal role in Edward's life.  During the first 3 years of his reign, he was dominated by his mother, who was sister to the King of France.  During much of his reign he was aided by his wife, Philippa of Hainault.  After Philippa's death in 1369, his mistress, Alice Perrers, completely dominated him and controlled the court.  His oldest son, Edward (the Black Prince), was instrumental in many of England's early successes in the war against France, but he died in 1376, perhaps contributing to Edward's death a year later.

<event start="May 3 1469 00:00:00 GMT" end="June 22 1527 00:00:00 GMT" isDuration="true" title="Machiavelli"> He was born on May 3, 1469 in Florence, Italy. He was a statesman and writer. He became clerk in the second chancery. He was given missions and had to travel to other countries. One of his mission was to watch Cesare Borgia. He admired Cesare because of his behavior. He tried creating a new militia. His plan fail and was imprision for one year. He died on June 22, 1527. </event>

<event start="Nov 10 1483 00:00:00 GMT" end="Feb 18 1543 00:00:00 GMT" isDuration="true" title="Martin Luther"> Martin was born in Germany. When he was seventeen he went to college and earned a bachelor's degree. Three years later he recieved a master's degree. His father who owned a copper mine was happy to see his son suceed. One day he barely escaped death in a thunderstorm and decided to become a monk. He also studied the bible and became a priest. He believed that Christians are saved through faith not efforts. This turned him against the teaching of the Catholic Church. He published a translation of the bible in German, he believed people should be able to read it in their own language. Later Martin began his Christian reform movement in Europe. </event>

<event start="1451" end="1506" isDuration="true" title="Christopher Colombus">
   Columbus was born to a prosperous wool merchant and weaver in Genoa, Italy. He taught himself Latin because all of the geography books were written in Latin. Columbus made two attempts in his lifetime to measure his longitude, both results were pretty bad. He was determined to find a shorter way to get to the Indies. He sailed on the Nina, the Pinta, and the Santa Maria.

<event start="Apr 15 1452 00:00:00 GMT" end="May 02 1519 00:00:00 GMT" isDuration="true" title="Leonardo Da Vinci" image="">
  Da Vinci was born in Vinci, Italy in 1452. He was considered to be a true Renaissance man that painted, sculpted, invented, and much more. He is a huge figure in not only science but in other areas such as the arts. His two most famous works are the Mona Lisa and the Last Supper. His greatness lasted until 1519, when he died. </event>
<event start="Feb 19 1473 00:00:00 GMT" end="May 24 1543 00:00:00 GMT" title="Copernicus" isDuration="true">
     Polish astronomerwho proposed that the planets have the Sun as the fixed point to which their motions are to be referred. It is reported that Copernicus' parents said the following to him at the age of twelve: "Copernicus, young man,    when are you going to come to terms with the fact that the world does not revolve around you."   

<event start="1548" end="1550" isDuration="true" title="Giordano Bruno">

Best-known as a proponent of heliocentrism and the infinity of the universe. Giordano Bruno was an Italian person. When he was young, he attend school at the Monastery of Saint Domenico. He later ran away and became a wanderer. He was interested in the nature of ideas. In 1581, he traveled to Paris and gave lectures on philosophy. His books became published and it was about his philosophy. Later he had traveled to other countries writing books. Then he was captured and put in prison for eight years and was taken out to be roasted to death by fire.


<event start="1546" end="1601" isDuration="true" title="Tycho Brahe">
     Tycho Brahe was a danish astronomer who was, at first, destined to become a lawyer. While he was young, his uncle kidnapped him. His father wanted him back but decided not to concern himself about it because Brahe was going to get an inheritance from his uncle. Later, he entered law school, but it wasn't until he viewed an eclipse where he changed his mind about being a lawyer. When he seen the eclipse, he realized that it was the same time the other scientists had predicted for that even to happen. Brahe became very interested in astronomy that he bought books by copernicus and other astrological books. He studied the movement of planetary bodies.
<event start="1558" end="1603" isDuration="true" title="Queen Elizabeth I">
     Queen Elizabeth the first was born in 1533 to Henry VIII and Anne Boleyn. Elizabeth inherited a tattered realm. She was a master of politics. she inherited her father's ways but did antagonize parliament. Her reign was one of the most constructive in English history: literature bloomed through the works of Shakespheare, Spenser, and Marloe.  

<event start="1564" end="1616" isDuration="true" title="William Shakespeare"> Shakespeare, born and raised in Straford-Avon, is regarded as the greatest writer in English and wrote amazing works. His most famous works was his 150 plus sonnets. </event>

<event start="1564" end="1642" isDuration="true" title="Galileo Galilei"> Gallieo was born in on February 15th of 1564. He was an Italian astronomer and physicist. He was the first to use the refracting telescope to find important discoveries. He discover Jupiter's moons and the phases of Venus. He was a follower in Copernicus's heliocentic theory. </event>

<event start="Dec 27 1571 00:00:00 GMT" end="Nov 15 1630 00:00:00 GMT" isDuration="true" title="Kepler"> Kepler was one the people that suppoerted Cpernicus's heliocentric model to be the actually universe over the geocentric model. He also found out that the orbit of the planets were not circles, but instead eliptical. He developed the three laws of planetary motion and laid down the foundation of Newton's theory of universal gravition. He inherited Brahe's scientific legacy when he died and also he determined Jesus Christ birthday. </event>

<event start="Jan 28 1608 00:00:00 GMT" end="Dec 31 1679 00:00:00 GMT" isDuration="true" title="Giovanni Alfonso Borelli" link="">
      Italian physiologist and physicist who was the first to explain muscular movement and other body functions according to the laws of statics and dynamics.  
<event start="Jan 28 1611 00:00:00 GMT" end="1687" isDuration="true" title="Johannes Hevelius">
     He was a protestant councilor and mayor in Danzig. He gained a reputation as the founder of lunar topography. Futhermore, he invented ten new constellations, including:  Leo Minor, Lynx, Scutum (shield), Sextans, and Vulpecula (fox).  

<event start="1625" end="1712" isDuration="true" title="Giovanni Cassini">

Giovanni Domenico Cassini was born on June 8, 1625. His French name is Jean-Dominique. He was not raised by his father and mother. Giovanni was raised by his uncle. He studied mathematics and astronomy. When he was 25, he was a fortress builder. Giovanni figured out that the earth was tilted 23.5 degrees. He also... determined the rotation period of Jupiter (9 hours and 56 minutes) and Mars (24 hours and 40 minutes) with remarkable accuracy. He died on September 14, 1712.


<event start="Apr 14 1629 00:00:00 GMT" end="Jul 8 1695 00:00:00 GMT" isDuration="true" title="Christian Huygens">
      Following Galileo's observations of Saturn, he gave the first accurate description of Saturn's rings. He found that it had rings and that it consisted of rocks. He is also the inventor of the pendulum clock and subdivided the Orion Nebula into different parts. The brighter interior of the nebula is named the Huygen's region.  

<event start="1643" end="1727" isDuration="true" title="Issac Newton"> He was a religious unorthodox Christian, physicist, mathematician, astronomer, natural philosopher, and achemist. One of his most famous works was published in 1687, (The Philosphizae Naturalis Principia Mathematica and was also considered the most influential books. He bulit one of the first reflecting teloscopes,studied speed of sound, and also described the three laws of motion and universal gravitation. </event>

<event start="Aug 19 1646 00:00:00 GMT" end="Dec 31 1719 00:00:00 GMT" isDuration="true" title="John Flamsteed" link="">
      English astronomer who was among the group of scientists who convinced King Charles II to build a national observatory in Greenwich Observatory. Charles II agreed, and made Flamsteed the first royal astronomer. He refused to publish until his work was completed. Eventually, he published a star catalog three times as large as Tycho Brahe's. Flamsteed grudgingly provided observations of the moon to Newton for use in his lunar theory.  

 <event start="1655" title="Saturn's Moon Titan Discovered">
      Huygens discovered Saturn's moon, Titan, after he found a way to improve telescopes by using a better way of grinding and polishing the lenses.  
<event start="Nov 8 1656 00:00:00 GMT" end="Jan 14 1672 00:00:00 GMT" isDuration="true" title="Edmund Halley">
     Halley was famous for noticing that certain comets return and predicting the return of comets. He also is known for getting Sir Isaac Newton to publish many of his books discussing happpenings in astronomy and philosophy. Many give credit to Halley for making Newton known to the world.  When did he die????????????  
<event start="Mar 24 1693 00:00:00 GMT" end="Mar 24 1776 00:00:00 GMT" isDuration="true" title="John Harrison" link="">
      Harrison was just a working class man who made clocks. He had no formal education, but he is the one credited for solving the longitude problem. The reason why a clockmaker could solve the longitude problem is because accurate timing was the key to determining the position of a ship at sea. The clocks prior to Harrison's watch were not as accurate and reliable. To further understand longitude and how it was determined, you can play the "Find Your Longitude" game in the link.  
<event start="1738" end="1822" title="William Herschel" isDuration="true">
     Sir Frederick William Herschel, a German-born Astronomer, hunted for comets using his huge reflecting telescope, just outside of Bath, England.  Although he and his sister found many new celestial objects, he is best known as the the discoverer of Uranus.  
<event start="1762" title="Harrison's Winning Watch Completed">
      Harrison completes the H4 watch to win the reward for solving the longitude problem. It had an error of 5 seconds, which is about 1.25 degrees off.  
<event start="1776" title="Harrison Watch First Used at Sea">
      The watch was used by Captain James Cook on his voyage to Australia and New Zealand.  
<event start="Mar 13 1781 00:00:00 GMT" title="Uranus Discovered">
      Herschel announced the discovery of the first new planet.  Although it had already been observed several times (example: John Flamsteed in 1690), it had generally been mistaken for a star.  Herschel initially reported it as a comet.  It wasn't until 1783 that he, with the support of the observations of many others, could state with confidence that it was the first new planet to be discovered in History.  Herschel proposed the name "Georgium Sidus" (George's Star), or the "Georgian Planet" in honour of his new patron, King George III, of England.  
<event start="Jan 04 2010 13:00:00 GMT" title="New Physics II class" link="" image="">
      A new semester began  

<event start="1914" title="Kaiser Wilhelm II"> Kaiser Wilhelm II, king of Germany, played a major role in the outbreak of war in 1914. Wilhelm made a militaristic and expansionist political path in attempt to defend Germany. In 1918 the U.S. entry into the war, combined with harsh German shortages of men and materials from years of erosion-based trench warfare, led to Germany's military collapse. Wilhelm was the eldest child of Prince Fredrick of Prussia and Victoria, daughter of Queen Victoria of the United Kingdom. Wilhelm was married to Augusta Victoria, Princess of Schleswig-Holstein, and they had seven children. Wilhelm was the last German Emperor and King of Prussia. </event>

<event start="1700 AD" title=" The History of Pi."> Pi is the ratio of the diameter of circle to its circumference. When used in decimal notation it is approximately 3.141593. The name pi was deprived from the Greek word for the permited in 1707. The earliest conscious use of pi was during the construction of the Old Kingdom pyramid in Egypt. Pi is observed on March 14 since it is the third month ofthe year and the fourteenth day. </event>

<event start="1694 AD" end="1778" isDuration="true" title="Voltaire"> Francois Marie Arovet was a great philosopher. HE was born on 1694. He attended a local school in France where he studied Latin. When Francious was 17 he took the wrong patch and became imprisoned for writing badly about he government. In jail he adopted his pen name "Voltaire". While in jail he also wrote his first stage play Oedipe. Soon Voltaire was released and he went right back to jail for insulting a powerful nobleman. Instead of going to jail he was exiled from his country. He want to England while in England he continued to write. During his lifetime he published many books. In 1778 Voltaire waws laid to rest. </event>

<event start="1800 BC" end="1600 BC" isDuration="true" title="The Square Root of 2"> The method of the square root of two was originated by the babyloinians in the early B.C. times. This functions is often encountered with mathematics and natural science. Later after the babyloinans, the greek philosipher Pythagerous later created one of the main contributions to math which was the pythagerian theorem. He used the theorem to figure out the hypothenuse of right triangles when the lenghts are both measured at "1". </event>

<event start="Oct 24 1632 00:00:00 GMT" isDuration="true" title="Antoni Van Leeuwenhoek"> There was once a pioneer named Antoni van Leeuwenhoek. He had a fascination for microscopes and finding ways to see tiny little things. His nick name is the "father of microbiology." He studied and observed living thing such as spermatozoa and bacteria. He also studied protozoa in which he called "little animalcules." Antoni was borned on October 24,1632. He was the fifth child of his family. He grew up in Holland. His family name, Leeuwenhoek translates into "lion's corner." This describes the location of his home. As far as his career, Anotoni suffered from many criticisms from the people around him. Many disagreed with the idea that microscopic creatures existed. Antoni proved the theory about the mechanisms of a sperm fertilizing an egg to form life. As he grew older, Leeuwenhoek received many honors and awards for his discoveries. His work has influenced many microbiologists of today's time, including Joseh Lister and Louis Pasteur. He also has an award named after him; one of the Royal Netherlands Academy of Arts and Sciences Established. This award is called the Leeuwenhoek Medal which honors contributions in microbiology. </event>

<event start="1754" end="1763" isDuration="true" title="French and Indian War"> The French and Indian was nicknamed the seven year war. This war lasted from 1754-1763. There was a battle between the British and the French. The British wanted control of French land. While they also wanted to take over the French fur trade. The war finally came to an end when British Major General James Wolfe took over Quebec. Land was being controlled by Spain, France and Britain. The French were controlled by a single government. This war became a world war. The French moved to area's that Britain's have claimed. </event>

<event start="Jan 1 1801 00:00:00 GMT" isDuration="false" title="Ceres (Asteroid/Dwarf Planet)"> Ceres was found on January 1 1801, by Giuseppe Piazzi, a monk in Sicily and the founding director of the Palermo Astronomical Observatory. This object was found in the gap between Mars and Jupiter. Found in the Asteroid belt, but back then it was called a planet. After some time scientist coined it the name Asteroid because its small size compared to the other 6 planets discovered then. Ceres is the largest and most massive body in the main asteroid belt and comprises about a third of the total mass on the entire main belt. The asteroid is large, but not big enough to produce a strong gravitational firled so no neightboring bodies are sttracted to this objest. Ceres has a density less than rock, but more than ice. to compare the weight of ceres to earth, it would be 0.016% of Earth's size or 9.43x 10^20 kilograms and would be 1/13 of earth's size. </event>

<event start="1655" title="Infinity"> John Wallis is credited with creating the infinity symbol. The symbol was first founded in 1655 Arithmetica Infinitorum. It is believed that the Romans and Greeks used it to stand for any large number. It stands for a concept which has given mathematicians problems since the ancient Greeks. </event>

<event start="1920 AD" title= "Quantum Theory"> Quantum theory evolved as a new branch of theoretical physics during the first few decades of the 20th century in an endeavour to understand the fundamental properties of matter. It began with the study of the interactions of matter and radiation. Certain radiation effects could neither be explained by classical mechanics, nor by the theory of electromagnetism. In particular, physicists were puzzled by the nature of light. Peculiar lines in the spectrum of sunlight had been discovered earlier by Joseph von Fraunhofer (1787-1826). These spectral lines were then systematically catalogued for various substances, yet nobody could explain why the spectral lines are there and why they would differ for each substance. It took about one hundred years, until a plausible explanation was supplied by quantum theory. </event>

<event start="1882 AD" title="Horse in Motion">
     The first motion picture made was the horse in motion. it was made by Eadweard Muybridge. it was filmed in 1882. it figured the first animal to be shown in a moving image format. it was filmed with fifty cameras. Each of the cameras used had a rapid shutter. they used trip wires to set off the cameras. then the pictures were projected a rapid speed to react the horses motion. this motion picture sparked the start of motion picture cameras.
<event start="1916 AD" title="Black holes">
     Karl Schwarzschild is credited with being the brilliant astronomer who developed the concept of black holes. In 1916, using Einstein's general theory of relativity, he began to make calculations about the gravity fields of stars. He concluded that if a huge mass, such as a star, were to be concentrated down to the size of an infintessimal point, the effects of Einstein's relativity would get really fairly extreme. Schwarzschild doubted that a star could get that small, and theorized that if a star did infact shrink upon itself like that, its gravity would remain the same and the planets revolving around it would remain in the same orbits they always had. Since then however, some of Schwarzschild's theories have been disproved, but most of his initial theories hold intact today.

<event start="800 AD" title="The Birth Of Zero"> The word zero came from the Arabic word, sifr (nothing). Zero was used as a place holder in the Meso-american Long Count calendar in Mexico and Central America. In the Quipu (knotted cord device) the absence of a knot in a certain location represented zero. In 130ad, Ptolemy used a small circle with a long over bar to represent zero, but did not use it in its modern form. The use of zero as a number (not just a place holder) began in the 9th century AD in India. Zero is now used in many areas of math, including the additive identity, which stats that zero plus any number equals that number. </event>

<event start="900" title="The Law of Sines"> The law of sines was discovered in the 10th century. It is variously attributed to al-Khujandi, Abul Wafa Bozjani, Nasir al-Din al-Tusi, and Abu Nasr Mansur. The plane law of sines was later described in the 13th century by Nasir al-Din al-Tusi. He stated that the law of sines for plane and spherical triangles and provided proofs for this law in his "On The Sector Figure". The law of sines today is known as an equation relating the lengths of the sides of an arbitrary triangle to the sines of its angle. The formula is a/sinA = b/sinB = c/sinC. This law can be used to compute the remaining sides of a triangle when two angles and a side are known. It can also be used when two sides and one of the non-enclosed angles are known. </event>

<event start="150 BC" title="Triginomety"> Triginometry is a branch of mathematics that solves problems relating to plane and spherical triangles. The word tiginometry came from the Greek word trigonon(triangle) and metron(to measure). It came out of the study of astromony and was originated by the Greek astronomer Hipparchus of Bithynia in 150 BC. He was the first to come up with a table using the sine to solve complex triangular problems. The prinicples are based on the fixed proportions of sides for a particular angle in a right angle triangle. Some examples known are sine, cosine, and tangent. When using triginometry it is possible to calculate the lenghts of the sides and the sizes of the angle of a right angled triangle. Triginometry computes the numerical values of the missing parts of a triangle or any thing that can be broken up into a triangle when the values of the other parts were given. </event>


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