The New Moon Series Part 4 חֹ דֶ ֶש ֶ חֹ דֶ ֶש the New Moon Series
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For Creative Minds
For Creative Minds The For Creative Minds educational section may be photocopied or printed from our website by the owner of this book for educational, non-commercial uses. Cross-curricular teaching activities, interactive quizzes, and more are available online. Go to www.ArbordalePublishing.com and click on the book’s cover to explore all the links. Moon Observations The months as we know them (January, February, etc.) are solar, based on how many days it takes the earth to revolve around the sun, roughly divided by twelve. A moon-th, or lunar (moon) month, is based on how long it takes the moon to orbit around the earth. The phases (shapes) of the moon change according to its cycle as it rotates around the earth, and the position of the moon with respect to the rising or setting sun. This cycle lasts about 29 ½ days. A (moon) month starts on “day one” with a new moon. The sun and the moon are in the same position and rise and set together. We can’t see the new moon. New Moon The moon rises and sets roughly 50 minutes later each day. The moon appears to “grow” or it waxes each day from a new moon to a full moon. The waxing moon’s bright side points at the setting Waxing sun and can be seen in the late afternoon on a clear day. Crescent A crescent moon is between new and half (less than half full), and may be waxing or waning. First Quarter The half-moon waxing or first quarter moon occurs about a week after the new moon. -
Moons Phases and Tides
Moon’s Phases and Tides Moon Phases Half of the Moon is always lit up by the sun. As the Moon orbits the Earth, we see different parts of the lighted area. From Earth, the lit portion we see of the moon waxes (grows) and wanes (shrinks). The revolution of the Moon around the Earth makes the Moon look as if it is changing shape in the sky The Moon passes through four major shapes during a cycle that repeats itself every 29.5 days. The phases always follow one another in the same order: New moon Waxing Crescent First quarter Waxing Gibbous Full moon Waning Gibbous Third (last) Quarter Waning Crescent • IF LIT FROM THE RIGHT, IT IS WAXING OR GROWING • IF DARKENING FROM THE RIGHT, IT IS WANING (SHRINKING) Tides • The Moon's gravitational pull on the Earth cause the seas and oceans to rise and fall in an endless cycle of low and high tides. • Much of the Earth's shoreline life depends on the tides. – Crabs, starfish, mussels, barnacles, etc. – Tides caused by the Moon • The Earth's tides are caused by the gravitational pull of the Moon. • The Earth bulges slightly both toward and away from the Moon. -As the Earth rotates daily, the bulges move across the Earth. • The moon pulls strongly on the water on the side of Earth closest to the moon, causing the water to bulge. • It also pulls less strongly on Earth and on the water on the far side of Earth, which results in tides. What causes tides? • Tides are the rise and fall of ocean water. -
Captain Vancouver, Longitude Errors, 1792
Context: Captain Vancouver, longitude errors, 1792 Citation: Doe N.A., Captain Vancouver’s longitudes, 1792, Journal of Navigation, 48(3), pp.374-5, September 1995. Copyright restrictions: Please refer to Journal of Navigation for reproduction permission. Errors and omissions: None. Later references: None. Date posted: September 28, 2008. Author: Nick Doe, 1787 El Verano Drive, Gabriola, BC, Canada V0R 1X6 Phone: 250-247-7858, FAX: 250-247-7859 E-mail: [email protected] Captain Vancouver's Longitudes – 1792 Nicholas A. Doe (White Rock, B.C., Canada) 1. Introduction. Captain George Vancouver's survey of the North Pacific coast of America has been characterized as being among the most distinguished work of its kind ever done. For three summers, he and his men worked from dawn to dusk, exploring the many inlets of the coastal mountains, any one of which, according to the theoretical geographers of the time, might have provided a long-sought-for passage to the Atlantic Ocean. Vancouver returned to England in poor health,1 but with the help of his brother John, he managed to complete his charts and most of the book describing his voyage before he died in 1798.2 He was not popular with the British Establishment, and after his death, all of his notes and personal papers were lost, as were the logs and journals of several of his officers. Vancouver's voyage came at an interesting time of transition in the technology for determining longitude at sea.3 Even though he had died sixteen years earlier, John Harrison's long struggle to convince the Board of Longitude that marine chronometers were the answer was not quite over. -
The Mathematics of the Chinese, Indian, Islamic and Gregorian Calendars
Heavenly Mathematics: The Mathematics of the Chinese, Indian, Islamic and Gregorian Calendars Helmer Aslaksen Department of Mathematics National University of Singapore [email protected] www.math.nus.edu.sg/aslaksen/ www.chinesecalendar.net 1 Public Holidays There are 11 public holidays in Singapore. Three of them are secular. 1. New Year’s Day 2. Labour Day 3. National Day The remaining eight cultural, racial or reli- gious holidays consist of two Chinese, two Muslim, two Indian and two Christian. 2 Cultural, Racial or Religious Holidays 1. Chinese New Year and day after 2. Good Friday 3. Vesak Day 4. Deepavali 5. Christmas Day 6. Hari Raya Puasa 7. Hari Raya Haji Listed in order, except for the Muslim hol- idays, which can occur anytime during the year. Christmas Day falls on a fixed date, but all the others move. 3 A Quick Course in Astronomy The Earth revolves counterclockwise around the Sun in an elliptical orbit. The Earth ro- tates counterclockwise around an axis that is tilted 23.5 degrees. March equinox June December solstice solstice September equinox E E N S N S W W June equi Dec June equi Dec sol sol sol sol Beijing Singapore In the northern hemisphere, the day will be longest at the June solstice and shortest at the December solstice. At the two equinoxes day and night will be equally long. The equi- noxes and solstices are called the seasonal markers. 4 The Year The tropical year (or solar year) is the time from one March equinox to the next. The mean value is 365.2422 days. -
Islamic Calendar from Wikipedia, the Free Encyclopedia
Islamic calendar From Wikipedia, the free encyclopedia -at اﻟﺘﻘﻮﻳﻢ اﻟﻬﺠﺮي :The Islamic, Muslim, or Hijri calendar (Arabic taqwīm al-hijrī) is a lunar calendar consisting of 12 months in a year of 354 or 355 days. It is used (often alongside the Gregorian calendar) to date events in many Muslim countries. It is also used by Muslims to determine the proper days of Islamic holidays and rituals, such as the annual period of fasting and the proper time for the pilgrimage to Mecca. The Islamic calendar employs the Hijri era whose epoch was Islamic Calendar stamp issued at King retrospectively established as the Islamic New Year of AD 622. During Khaled airport (10 Rajab 1428 / 24 July that year, Muhammad and his followers migrated from Mecca to 2007) Yathrib (now Medina) and established the first Muslim community (ummah), an event commemorated as the Hijra. In the West, dates in this era are usually denoted AH (Latin: Anno Hegirae, "in the year of the Hijra") in parallel with the Christian (AD) and Jewish eras (AM). In Muslim countries, it is also sometimes denoted as H[1] from its Arabic form ( [In English, years prior to the Hijra are reckoned as BH ("Before the Hijra").[2 .(ﻫـ abbreviated , َﺳﻨﺔ ﻫِ ْﺠﺮﻳّﺔ The current Islamic year is 1438 AH. In the Gregorian calendar, 1438 AH runs from approximately 3 October 2016 to 21 September 2017.[3] Contents 1 Months 1.1 Length of months 2 Days of the week 3 History 3.1 Pre-Islamic calendar 3.2 Prohibiting Nasī’ 4 Year numbering 5 Astronomical considerations 6 Theological considerations 7 Astronomical -
Bright As the Full Moon: How Much to Light up the Night?
Bright as The Full Moon: How Much to Light Up The Night? A reprint of the Illinois Coalition for Responsible Outdoor Lighting website page at http://www.illinoislighting.org/moonlight.html We humans are biologically a diurnal species. While all of our other senses function as well at night as during the day (or perhaps sometimes even more sharply), our eyesight is limited in its low-light capabilities. For tens of thousands of years, our ancestors were restricted in their ability to function between evening and morning twilight. The light from the flames of burning materials -- from sticks, to animal and vegetable fats, to natural fossil fuels -- extended their functionality into the night, especially in enclosed areas. Outdoors, another light source was commonly made use of to conduct activity outdoors at night: moonlight. We find references to the use of moonlight for nocturnal activity in many places in both the historic record and in folk wisdom. The moon provides its most substantial illumination of the landscape at the time of full moon (see below); full moons are particularly associated with nocturnal activity. The name "Harvest Moon", for the full moon occurring nearest to the autumnal equinox, refers to the fact that the moonlight at that time is bright enough (and moonrise occurs in conjunction with sunset) to allow harvesters in the northern hemisphere to continue their work in the fields into the night. The same effect gives us the name of the following full moon, the Hunter's Moon. Moonlight gardens, designed to be enjoyed during the night, were enjoyed in the orient for centuries; the 17th Century Taj Mahal in India featured a large garden meant to be visited during the cool of night. -
Summer ASTRONOMICAL CALENDAR
2020 Buhl Planetarium & Observatory ASTRONOMICAL CALENDAR Summer JUNE 2020 1 Mon M13 globular cluster well-placed for observation (Use telescope in Hercules) 3 Wed Mercury at highest point in evening sky (Look west-northwest at sunset) 5 Fri Full Moon (Strawberry Moon) 9 Tues Moon within 3 degrees of both Jupiter and Saturn (Look south before dawn) 13 Sat Moon within 3 degrees of Mars (Look southeast before dawn) Moon at last quarter phase 20 Sat Summer solstice 21 Sun New Moon 27 Sat Bootid meteor shower peak (Best displays soon after dusk) 28 Sun Moon at first quarter phase JULY 2020 5 Sun Full Moon (Buck Moon) Penumbral lunar eclipse (Look south midnight into Monday) Moon within 2 degrees of Jupiter (Look south midnight into Monday) 6 Mon Moon within 3 degrees of Saturn (Look southwest before dawn) 8 Wed Venus at greatest brightness (Look east at dawn) 11 Sat Moon within 2 degrees of Mars (Look south before dawn) 12 Sun Moon at last quarter phase 14 Tues Jupiter at opposition (Look south midnight into Wednesday) 17 Fri Moon just over 3 degrees from Venus (Look east before dawn) 20 Mon New Moon; Saturn at opposition (Look south midnight into Tuesday) 27 Mon Moon at first quarter phase 28 Tues Piscis Austrinid meteor shower peak (Best displays before dawn) 29 Wed Southern Delta Aquariid and Alpha Capricornid meteor showers peak AUGUST 2020 1 Sat Moon within 2 degrees of Jupiter (Look southeast after dusk) 2 Sun Moon within 3 degrees of Saturn (Look southeast after dusk) 3 Mon Full Moon (Sturgeon Moon) 9 Sun Conjunction of the Moon and -
Alexander Jones Calendrica I: New Callippic Dates
ALEXANDER JONES CALENDRICA I: NEW CALLIPPIC DATES aus: Zeitschrift für Papyrologie und Epigraphik 129 (2000) 141–158 © Dr. Rudolf Habelt GmbH, Bonn 141 CALENDRICA I: NEW CALLIPPIC DATES 1. Introduction. Callippic dates are familiar to students of Greek chronology, even though up to the present they have been known to occur only in a single source, Ptolemy’s Almagest (c. A.D. 150).1 Ptolemy’s Callippic dates appear in the context of discussions of astronomical observations ranging from the early third century B.C. to the third quarter of the second century B.C. In the present article I will present new attestations of Callippic dates which extend the period of the known use of this system by almost two centuries, into the middle of the first century A.D. I also take the opportunity to attempt a fresh examination of what we can deduce about the Callippic calendar and its history, a topic that has lately been the subject of quite divergent treatments. The distinguishing mark of a Callippic date is the specification of the year by a numbered “period according to Callippus” and a year number within that period. Each Callippic period comprised 76 years, and year 1 of Callippic Period 1 began about midsummer of 330 B.C. It is an obvious, and very reasonable, supposition that this convention for counting years was instituted by Callippus, the fourth- century astronomer whose revisions of Eudoxus’ planetary theory are mentioned by Aristotle in Metaphysics Λ 1073b32–38, and who also is prominent among the authorities cited in astronomical weather calendars (parapegmata).2 The point of the cycles is that 76 years contain exactly four so-called Metonic cycles of 19 years. -
How Long Is a Year.Pdf
How Long Is A Year? Dr. Bryan Mendez Space Sciences Laboratory UC Berkeley Keeping Time The basic unit of time is a Day. Different starting points: • Sunrise, • Noon, • Sunset, • Midnight tied to the Sun’s motion. Universal Time uses midnight as the starting point of a day. Length: sunrise to sunrise, sunset to sunset? Day Noon to noon – The seasonal motion of the Sun changes its rise and set times, so sunrise to sunrise would be a variable measure. Noon to noon is far more constant. Noon: time of the Sun’s transit of the meridian Stellarium View and measure a day Day Aday is caused by Earth’s motion: spinning on an axis and orbiting around the Sun. Earth’s spin is very regular (daily variations on the order of a few milliseconds, due to internal rearrangement of Earth’s mass and external gravitational forces primarily from the Moon and Sun). Synodic Day Noon to noon = synodic or solar day (point 1 to 3). This is not the time for one complete spin of Earth (1 to 2). Because Earth also orbits at the same time as it is spinning, it takes a little extra time for the Sun to come back to noon after one complete spin. Because the orbit is elliptical, when Earth is closest to the Sun it is moving faster, and it takes longer to bring the Sun back around to noon. When Earth is farther it moves slower and it takes less time to rotate the Sun back to noon. Mean Solar Day is an average of the amount time it takes to go from noon to noon throughout an orbit = 24 Hours Real solar day varies by up to 30 seconds depending on the time of year. -
THIRTEEN MOONS Curriculum
THIRTEEN MOONS Curriculum OJIBWAY CREE MOHAWK PRACTITIONER GUIDE LBS LEVELS 2 AND 3 13 MOONS – Teacher’s Guide 0 13 MOONS – Teacher’s Guide 1 © Ontario Native Literacy Coalition [2010] Table of Contents Introduction………………………………………………………………………………………………..4 Aboriginal Calendars………………………………………………………………………………..…5 OJIBWE Unit………………………………………………………………………………………………………………….6 Introduction & Pronunciation Guide…………………………………………………….8 Moons …………………………………………………………………………………………………..9 Numbers …………………………………………………………………………………………….12 Days of the Week …………………………………………………………………………….….14 Seasons ……………………………………………………………………………………………...15 CREE Unit…………………………………………………………………………………………………..16 Introduction ……………………………………………………………………………………….18 Moons ………………………………………………………………………………………………...19 Numbers ………………………………………………………………………………………….…20 Seasons and Days of the Week ………………………………………………………..…..22 MOHAWK Unit…………………………………………………………………………………………..24 Vowels………………………………………….………………………………………………..……26 Consonants……………………………………………………………………………………..…..27 Months…………………………………………………………………………………………..……29 Numbers………………………………………………………………………………………..……30 Days………………………………………………………………………………………………..…..32 Seasons…………………………………………………………………………………………..…..33 Cycle of Ceremonies……………………………………………………………………………34 Resources……………………………………………………………………………………………….…36 2011-2012 Calendars ……………………………………………………………………..…37 2011 Moon Phases ………………………………………………………………………..…..38 Sample Calendar Page …………………………………………………………………...….40 Task-Based Activities……………………………………………………………………………………44 Writing Activity -
Metonic Intercalations in Athens
METONIC INTERCALATIONSIN ATHENS ~W~7~JHENI published in 1940 the only knownAttic decreenaming in its preamble v v at least part of the name and demotic of the secretary of 298/7 I suggested that the calendar equation indicated an ordinary year of twelve months.' This deter- mination was taken over by Pritchett and Meritt in Chronology of Hellenistic Athens (p. xvi), by Pritchett and Neugebauer in Calendars of Athens (p. 80), and by Meritt in The Athenian Year (p. 232). There is one consideration which at the time did not seem so important as it does now and which I wish to discuss here. The incentive to a reconsideration has been the observation that the sequence of ordinary and intercalary years which called for OOIOI in 299/8-295/4 rather than OIOOI at the beginning of the 8th Metonic cycle was the first apparent deviation from Meton's norm for possibly a hundred years, except for the anomaly in 307/6 which had valid and obvious historical reasons and which could be amply explained.2 I noted, as a comment on the cycles, that " the eighth cycle has only the transposition of IO to OI in the years 298/7 and 297/6." 8 Otherwise the cycle in the festival calendar of Athens followed faithfully the normal Metonic cycle of intercalation. In the text of Hesperia, IX, 1940, pp. 80-83 (13), as now restored with a stoichedon line of 29 letters, the equation reads: [. 'EA..Xa0b],8oXt'v[o] sv6 [TE&per'] [ElKa6a& Tptp&et] Ka' eiKoo-xrre[&T2q irp] [VTlavea- -] - KTX. -
Phases of the Moon
TA Guide for Notes Phases of the Moon Description In this activity, students stand around a bright light bulb in an otherwise dark room, holding a styrofoam ball at arm’s length. As they turn around, they watch the changing pattern of light and dark on the styrofoam ball which reproduces the phases of the Moon. Then, using a second ball as the Earth, students explore the geometry of the Sun-Earth-Moon system to predict the rise and set times of different phases of the Moon. The students “accidentally” stumble onto the alignment of the Sun, Earth and Moon during lunar and solar eclipses. Learning Goals After this tutorial, together with lecture materials, students should be able to • use the geometry of the Sun, Earth and Moon to illustrate the phases of the Moon and to predict the Moon’s rise and set times • illustrate the geometry of the Sun, Earth and Moon during lunar and solar eclipses, and explain why there are not eclipses every month Set-up 20 minutes The students will work together in groups of 3. In order to fit enough groups of students, you may need to use 2 light sources (shown at right). Set up one in the center of the lab and, if necessary, one in the center of the reading room (push the tables to the inside around the light. This will stop the students from getting too close to the light and messing up the geometry.) When both lights are needed, both TAs will be “A” TAs that lead the activity to their own groups of students.