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Atmospheric Optics - II First Midterm Exam Is This Friday!
Atmospheric Optics - II First midterm exam is this Friday! The exam will be in-class, during our regular lecture • this Friday September 28 at 9:30 am The exam will be CLOSED BOOK • ♦ No textbooks ♦ No calculators ♦ No cheat-sheets Alternate seating • The grades will be posted on WebCT • The exam covers Chapters 1,2,3,4,5, and 19. • The sections which are not covered are listed on the • Class Notes web page. RECAP • Human perception of color, white objects, black objects. Light scattering: light is sent in all directions –forward, sideways and • backward ♦ Geometric scattering: R>>λ (all wavelengths equally scattered) ♦ Mie scattering: R~λ (red is scattered more efficiently) ♦ Rayleigh scattering: R<<λ (blue is scattered more efficiently) Phenomena: white clouds, blue skies, hazy skies, crepuscular rays, colorful • sunsets, blue moon. TODAY: Refraction: the bending of the light ray as it travels from one medium to • another. It bends towards the vertical if it enters a more-dense medium and away from the vertical as it enters a less-dense medium. ♦ Phenomena: stars appear higher in the sky, twinkling, twilight. • Reflection: the angle of incidence is equal to the angle of reflection • Total internal reflection: mirages Dispersion: separation of colors when light travels through a medium. • ♦ rainbow Reflection and Refraction of Light The speed of light in vacuum • is c=300,000 km/s Snell’s law: The angle of • incidence is equal to the angle of reflection. Light that enters a more- • dense medium slows down and bends toward the normal. Light that exits a more- • dense medium speeds up and bends away from the normal. -
The Strait of Anian and British Northwest America: Cook's Third Voyage in Perspective*
The Strait of Anian and British Northwest America: Cook's Third Voyage in Perspective* JOHNNORRIS For local patriots of British Columbia, Captain Cook's third voyage is unsatisfactory. His stay at Nootka was so brief, his exploration of the coast so perfunctory, and his preoccupation with Alaska so much to be deplored. We are driven, in asking the reasons for these solecisms, to examine his instructions from the Admiralty for the third voyage. Alas, they hardly mention the coast of Northwest America between 45 ° and 65 ° North. Did their Lordships of the Admiralty slip up? Was Cook, that supreme professional who had had a hand in drawing up his own instructions, at less than his expert best? Did Palinurus nod at the helm? Cook's landing at Nootka was the result of his instructions "to put into the first convenient Port to recruit your Wood and Water and procure Refreshments . .Jîl But the prolongation of his stay to four weeks (29 March to 26 April 1778) was traceable to the bad fitting-out of his ships by the Navy Board, which resulted in the rotten foretop and mizzen masts of the Resolution having to be replaced after the strain of the spring gales of the North Pacific. Further, the avoidance of virtually all the rest of the British Columbia coast was in accordance with those instructions, since Cook was ordered to: ... proceed Northward along the Coast as far as the Latitude of 65 °, or farther, if you are not obstructed by Lands or Ice; taking care not to lose any time in exploring Rivers or Inlets, or upon any other account, until you get into the before-mentioned latitude of 65 °... -
Lt. Aemilius Simpson's Survey from York Factory to Fort Vancouver, 1826
The Journal of the Hakluyt Society August 2014 Lt. Aemilius Simpson’s Survey from York Factory to Fort Vancouver, 1826 Edited by William Barr1 and Larry Green CONTENTS PREFACE The journal 2 Editorial practices 3 INTRODUCTION The man, the project, its background and its implementation 4 JOURNAL OF A VOYAGE ACROSS THE CONTINENT OF NORTH AMERICA IN 1826 York Factory to Norway House 11 Norway House to Carlton House 19 Carlton House to Fort Edmonton 27 Fort Edmonton to Boat Encampment, Columbia River 42 Boat Encampment to Fort Vancouver 62 AFTERWORD Aemilius Simpson and the Northwest coast 1826–1831 81 APPENDIX I Biographical sketches 90 APPENDIX II Table of distances in statute miles from York Factory 100 BIBLIOGRAPHY 101 LIST OF ILLUSTRATIONS Fig. 1. George Simpson, 1857 3 Fig. 2. York Factory 1853 4 Fig. 3. Artist’s impression of George Simpson, approaching a post in his personal North canoe 5 Fig. 4. Fort Vancouver ca.1854 78 LIST OF MAPS Map 1. York Factory to the Forks of the Saskatchewan River 7 Map 2. Carlton House to Boat Encampment 27 Map 3. Jasper to Fort Vancouver 65 1 Senior Research Associate, Arctic Institute of North America, University of Calgary, Calgary AB T2N 1N4 Canada. 2 PREFACE The Journal The journal presented here2 is transcribed from the original manuscript written in Aemilius Simpson’s hand. It is fifty folios in length in a bound volume of ninety folios, the final forty folios being blank. Each page measures 12.8 inches by seven inches and is lined with thirty- five faint, horizontal blue-grey lines. -
Mystic Mountain © Mendip Hills AONB
Viewpoint Mystic mountain © Mendip Hills AONB Time: 15 mins Region: South West England Landscape: rural Location: Ebbor Gorge, Somerset, BA5 3BA Grid reference: ST 52649 48742 Getting there: Park at Deer Leap car park and picnic area (on the road between Wookey Hole and Priddy) Keep an eye out for: Buzzards and other birds of prey soaring on the thermals below From this stunning vantage point we have sweeping views south across the flat land of the Somerset Levels. On a clear day, looking east you can see the dark line of hills marking out Exmoor National Park and if you look in a west south-west direction you can even spot the Bristol Channel glistening in the distance. As our eyes pan across the view they rest on a perfectly rounded knoll with a short tower on top. This is Glastonbury Tor. Claimed as the site of the legendary Vale of Avalon and the final resting place of King Arthur, the tor rises up above the flat land surrounding it and is visible for miles around. Why does the mystical Glastonbury Tor rise up out of the surrounding lowlands? First of all look straight ahead and in the middle distance you’ll see three hills which punctuate the flat landscape. From left to right they are Hay Hill, Ben Knowle Hill and Yarley Hill, part of a low ridge just south of the River Axe. Surrounding these hills the Somerset Levels are an area of low-lying farmland. The lowest point is just 0.2 metres above sea level. -
The Min Min Light and the Fata Morgana Pettigrew
C L I N I C A L A N D E X P E R I M E N T A L OPTOMETRYThe Min Min light and the Fata Morgana Pettigrew COMMENTARY The Min Min light and the Fata Morgana An optical account of a mysterious Australian phenomenon Clin Exp Optom 2003; 86: 2: 109–120 John D Pettigrew BSc(Med) MSc MBBS Background: Despite intense interest in this mysterious Australian phenomenon, the FRS Min Min light has never been explained in a satisfactory way. Vision Touch and Hearing Research Methods and Results: An optical explanation of the Min Min light phenomenon is of- Centre, University of Queensland fered, based on a number of direct observations of the phenomenon, as well as a field demonstration, in the Channel Country of Western Queensland. This explanation is based on the inverted mirage or Fata Morgana, where light is refracted long distances over the horizon by the refractive index gradient that occurs in the layers of air during a temperature inversion. Both natural and man-made light sources can be involved, with the isolated light source making it difficult to recognise the features of the Fata Morgana that are obvious in daylight and with its unsuspected great distance contribut- ing to the mystery of its origins. Submitted: 11 September 2002 Conclusion: Many of the strange properties of the Min Min light are explicable in terms Revised: 2 December 2002 of the unusual optical conditions of the Fata Morgana, if account is also taken of the Accepted for publication: 3 December human factors that operate under these highly-reduced stimulus conditions involving a 2002 single isolated light source without reference landmarks. -
A History of Exploration
TEACHER’S GUIDE TEACHER’S GUIDE TEACHER’S GUIDE • We are all explorers in some way. Have students develop narratives • www.mariner.org/age/menu.html describing a personal exploration story — when they tried something The Mariners’ Museum Web site is dedicated to the study of discovery and new or different. How do these stories compare with the stories of famous exploration.The Age of Exploration Curriculum Guide on this site provides voyages of exploration? Which elements are similar and different? information for students about the history of exploration. • Exploration of any type, whether to new places or into new areas of knowledge, can be challenging, exciting and dangerous. Have students Suggested Print Resources select a person who explored an area (geographic, scientific or other- wise) and research what the person discovered, what challenges they had • Fritz, Jean. Around the World in a Hundred Years: From Henry the to face, how they overcame those challenges and what the significant Navigator to Magellan. Putnam’s, New York, NY; 1994. results of the exploration were. Students should present their findings to • Ganeri,Anita. The Story of Maps and Navigation. Oxford University Press, the class, perhaps in the way of posters that may be displayed on class- New York, NY; 1997. room walls for future reference. • Johnson, Sylvia A. Mapping the World. Atheneum Books, • Successful exploration could not have occurred without the aid of New York, NY; 1999. various navigational tools and technologies that mankind has invented, adapted and perfected to propel explorers into previously unknown ter- • Konstam,Angus. Historical Atlas of Exploration. -
European Exploration of North America
European Exploration of North America Tell It Again!™ Read-Aloud Anthology Listening & Learning™ Strand Learning™ & Listening Core Knowledge Language Arts® • • Arts® Language Knowledge Core Grade3 European Exploration of North America Tell It Again!™ Read-Aloud Anthology Listening & Learning™ Strand GrAdE 3 Core Knowledge Language Arts® Creative Commons Licensing This work is licensed under a Creative Commons Attribution- NonCommercial-ShareAlike 3.0 Unported License. You are free: to Share — to copy, distribute and transmit the work to Remix — to adapt the work Under the following conditions: Attribution — You must attribute the work in the following manner: This work is based on an original work of the Core Knowledge® Foundation made available through licensing under a Creative Commons Attribution- NonCommercial-ShareAlike 3.0 Unported License. This does not in any way imply that the Core Knowledge Foundation endorses this work. Noncommercial — You may not use this work for commercial purposes. Share Alike — If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. With the understanding that: For any reuse or distribution, you must make clear to others the license terms of this work. The best way to do this is with a link to this web page: http://creativecommons.org/licenses/by-nc-sa/3.0/ Copyright © 2013 Core Knowledge Foundation www.coreknowledge.org All Rights Reserved. Core Knowledge Language Arts, Listening & Learning, and Tell It Again! are trademarks of the Core Knowledge Foundation. Trademarks and trade names are shown in this book strictly for illustrative and educational purposes and are the property of their respective owners. -
The Antarctic Sun, December 17, 2006
December 17, 2006 New fi nds in Dry Valleys indicate ancient tundra By Peter Rejcek Sun staff Flannel shirts and jeans – or perhaps a light fleece – may have been the norm in the McMurdo Dry Valleys of Antarctica about 14 mil- lion years ago. Fossil records and glacial history in an area of the western Olympus Range near Mount Boreas indi- cate that during the middle of the Miocene epoch (about 14 million years ago) climatic conditions were warm and wet enough to support plant and insect life, according to a team of scientists that returned this season to continue its research. The story began when Adam Lewis, a post-doctoral fellow at The Antarctic The Sun Byrd Polar Research Center at The Ohio State University, traversed a roughly 100-square-kilometer Allan Ashworth picks through a pile of area of the Olympus Range sev- Peter Rejcek / eral years ago while working on shale looking for fossils and other his doctorate. His thesis involved fleshing out the glacial history evidence of a tundra environment that he and of eight valleys between various mountain peaks. others believe disappeared in the McMurdo Dry “In the process of doing that, I discovered these lake deposits,” Valleys about 14 million years ago. explained Lewis shortly before he headed into the field via helicop- See related story on page 8 See CLIMATE on page 9 Blowin’ in the Wind Quote of the Week USAP looks to harness alternative energy for McMurdo, South Pole “So, are you originally from By Steve Martaindale Programs for the National Science Foundation. -
The Fata Morgana. by Professor FA Forel, Morges
1911-12.] The Fata Morgana. 175 XV.—The Fata Morgana. By Professor F. A. Forel, Morges, Switzerland. Abstract of an Address delivered before the Society on July II,., 1911; translated by Professor C. G. Knott. AMONG optical phenomena which originate over the surface of water there is one so ill-defined and ill-observed as to be still mysterious; till now it has received no valid explanation. The Italians call it the Fata Morgana. Under conditions still lacking precise description, there appear on the far side of the Straits of Messina certain fantastic visions, fortresses and castles of unknown cities, which seem to emerge from the sea, soon to vanish again. These are the "palaces" of the "fairy Morgana," which appear and dis- appear at the capricious stroke of the magician's wand. Most of the accounts of the phenomenon are founded on the extravagant description and the amazing picture published in 1773 by the Dominican friar Don Antonio Minasi, professor of botany at the Roman College of Sapienzia. This drawing, with its incoherent groupings of castles and boats, reflected and refracted at random in a manner quite inconsistent with physical possibilities, was largely the creation of the distorted imagination of an artist who did not understand in the least the wonderful illusion. To appreciate the confusion which reigns in the scientific world in regard to this phenomenon, the reader need only refer to the chapter on the Fata Morgana in Pernter's admirable work on Meteorological Optics (Vienna, 1910). There he will be impressed with the uncertainty of the conclusions reached by the author after a study of the insufficient and contradictory documents to which he had access. -
Storms, Swells, Snowand Ice (Topped with Polar Bears)
travel at home travel at home INTO THE NORTH Storms, swells, snow and ICE and OUT OF THE (topped with polar bears) are NORTHWEST PASSAGE all part of this EPIC voyage STORY + PHOTOGRAPHY BY Barb Sligl Iceberg at sunset, 250 km north of the Arctic Circle in Ilulissat Icefjord in Greenland, a UNESCO World Heritage Site 36 JUST FOR CANADIAN DENTISTS November/December 2016 travel at home travel at home omewhere above the Arctic Circle, I see a fata morgana. Low-lying, barren islands—like so many sperm whales with their broad, sloping foreheads—float above the horizon in Coronation Gulf. As if I’m a long-lost sea captain of yore, it’s a glimpse of what’s called a superior mirage. In 1818, on his search for the long-sought Northwest Passage, captain John Ross’s route was barred by an insurmountable range he called Croker’s Mountains. Yet there was no such thing. A year later, another explorer sailed right through the same spot in Lancaster Sound, as did doomed Franklin in 1845 and then the first man to make it through the SNorthwest Passage in 1906, Roald Amundsen. Today, this storied route is often still blocked—by sea ice. It’s what makes it one of the last untouched places on earth. I’m on Adventure Canada’s Out of the Northwest Passage voyage, and after my fata morgana sighting, I continue to see fantastical things over the next 16 days of this historic- yet-still-novel voyage. From a strip of pink on the horizon that hovers between inky sea and dark swathe of clouds like a Rothko painting to storms and swells, snow and ice—all High Arctic sunset, like a Rothko painting Touring Ilulissat Icefjord by zodiac with the seductive whisper of peril. -
(AP) Module 8: Fools for Gold
i2P • AP Module 8 • Fools for Gold Fools for Gold Module 8 - Akshayuk Pass Expedition i2P • Akshayuk Pass Education Resource • High School 1 i2P • AP Module 8 • Fools for Gold TO THE NORTH Ray and the team are well into the Akshayuk Pass now, making their way past towering walls of rock, and over terrain tilled by the great hand of glaciers. Would-be explorers, mining knowledge and experience, a gift rarely afforded to prior generations. A gift we are privileged to acknowledge, bequeathed by the wealth and technology of our day. Indeed, explorers from an earlier age did not have the advantages afforded by our cur- rent technology. Global Positioning Systems (GPS) to keep one from getting lost, satel- lite phones to call for help, and airplanes to come to the rescue. Historically those who traveled to the Arctic were gone for years, and lost to communication until they returned. Many never re- turned. What drove people to explore the north: to risk their lives and expose themselves to profound privation? The exploration of the Arctic spans almost 450 years, and continues to this day. While early explor- ers were looking for spices from China, current ex- ploration is focused on precious resources like oil, diamonds and gold. Caught in the mix has been the Inuit people, and the welfare of those who call the Arctic home has often been overlooked in the drive to explore. GETTING THERE The principal means of travel for early explorers was by boat; sailing ships to cross the ocean and freigh- ter canoes to travel inland waterways. -
National Historic Sites Service a Prospectus Of
NATIONAL HISTORIC SITES SERVICE MANUSCRIPT REPORT NUMBER $K Vii/ L A PROSPECTUS OF HISTORIC SITES IN THE NORTHWEST TERRITORIES by Richard J. Young November 1970 NATIONAL AND HISTORIC PARKS BRANCH DEPARTMENT OF INDIAN AFFAIRS AND NORTHERN DEVELOPMENT A Prospectus of Historic Sites in the Northwest Territories by Richard J. Young ii The Manuscript Report Series is printed in a limited number of copies and is intended for internal use by the Department of Indian Affairs and Northern Develop ment. Copies of each issue are distributed to various public repositories in Canada, for use by interested individuals. Many of these reports will be published in Canadian Historic Sites: Occasional Papers in Archaeology and History, and may be altered during the publishing process by editing or by further research. iii A Prospectus of Historic Sites in the Northwest Territories by Richard J. Young iv Preface 1 Abstract of exploration theme 14 Exploration sites 34 The Fur Trade 40 Fur Trade Sites 52 Missionary Activity 55 Sites of Missionary Activity 60 Industrialization 62 Sites representing the beginning of the modern era 64 Additional bibliography iv PREFACE The following report Is based on research done in the National Library of Canada, Library of the Public Archives of Canada, and the Departmental Library of the Department of Indian Affairs and Northern Development. The work was undertaken at the request of the Government of the North west Territories, and filed with the National Historic Sites Service on November 6th, 1970. The report is an effort to present a prospectus of historic sites in the Northwest Territories.