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Soaring Weather
Chapter 16 SOARING WEATHER While horse racing may be the "Sport of Kings," of the craft depends on the weather and the skill soaring may be considered the "King of Sports." of the pilot. Forward thrust comes from gliding Soaring bears the relationship to flying that sailing downward relative to the air the same as thrust bears to power boating. Soaring has made notable is developed in a power-off glide by a conven contributions to meteorology. For example, soar tional aircraft. Therefore, to gain or maintain ing pilots have probed thunderstorms and moun altitude, the soaring pilot must rely on upward tain waves with findings that have made flying motion of the air. safer for all pilots. However, soaring is primarily To a sailplane pilot, "lift" means the rate of recreational. climb he can achieve in an up-current, while "sink" A sailplane must have auxiliary power to be denotes his rate of descent in a downdraft or in come airborne such as a winch, a ground tow, or neutral air. "Zero sink" means that upward cur a tow by a powered aircraft. Once the sailcraft is rents are just strong enough to enable him to hold airborne and the tow cable released, performance altitude but not to climb. Sailplanes are highly 171 r efficient machines; a sink rate of a mere 2 feet per second. There is no point in trying to soar until second provides an airspeed of about 40 knots, and weather conditions favor vertical speeds greater a sink rate of 6 feet per second gives an airspeed than the minimum sink rate of the aircraft. -
Sky Watch Heard Most Weekdays on WFWM, FSU's Public Supported
Night Highlights – Dec.2014 through Dec.2015 by Dr. Bob Doyle, Frostburg State Planetarium Dr. Doyle’s email is: [email protected]: His office phone number is (301) 687-7799 MOON – Earth’s companion both orbits Earth and rotates in 27.32 E. days so one side of moon always faces Earth (while other side is turned away from us). Moon’s cycle of lighted shapes (phases) lasts 29.53 E. days, as the phases also depend on direction of sun (appears to move 30 degrees eastward each month along zodiac). The moon is seen about 13 days growing in the evening from a slender crescent ( ) ) to Full, followed by an equal time shrinking (mainly seen in the a.m. sky) and then 3 days hidden in sun’s glare. Key Moon Phases (D) moon ½ full in evening (best for crater & mountain viewing ) & (O) full moon (see all lava plains) (Dec. ’14, 6 -O, 28 – D)) // (Jan. ’15, 4 - O, 26 - D), // (Feb. ’15, 3 – O, 25 - D) // (Mar. 5 – O, 27 – D) (Apr. 4 – O, 25 – D), // ( May 3 – O, 25 - D) // (Jun., 2- O, 27 – D)) // (Jul., 1 – O, 24 –D, 31 –O (Blue Moon)) (Aug., 22 – D, 29 – O) // (Sep., 20 – D, 27 – O (Harvest Moon)) // (Oct. 20 – D, 27 – O (Hunters’ Moon)) // (Nov., 19 – D, 25 – O) // (Dec., 18 – D, 25 – O (Long Night Moon)) (D = ½ full, O = full) THE 5 BRIGHT PLANETS (Mercury, Venus, Mars, Jupiter & Saturn): Uranus, Neptune are much dimmer. When high above horizon, planets appear as points of light that shine steadily. -
Hubble Revisits the Veil Nebula 2 April 2021
Image: Hubble revisits the Veil Nebula 2 April 2021 this stellar violence, the shockwaves and debris from the supernova sculpted the Veil Nebula's delicate tracery of ionized gas—creating a scene of surprising astronomical beauty. The Veil Nebula is also featured in Hubble's Caldwell Catalog, a collection of astronomical objects that have been imaged by Hubble and are visible to amateur astronomers in the night sky. Provided by NASA Credit: ESA/Hubble & NASA, Z. Levay This image taken by the NASA/ESA Hubble Space Telescope revisits the Veil Nebula, which was featured in a previous Hubble image release. In this image, new processing techniques have been applied, bringing out fine details of the nebula's delicate threads and filaments of ionized gas. To create this colorful image, observations were taken by Hubble's Wide Field Camera 3 instrument using five different filters. The new post-processing methods have further enhanced details of emissions from doubly ionized oxygen (seen here in blues), ionized hydrogen, and ionized nitrogen (seen here in reds). The Veil Nebula lies around 2,100 light-years from Earth in the constellation of Cygnus (the Swan), making it a relatively close neighbor in astronomical terms. Only a small portion of the nebula was captured in this image. The Veil Nebula is the visible portion of the nearby Cygnus Loop, a supernova remnant formed roughly 10,000 years ago by the death of a massive star. That star—which was 20 times the mass of the Sun—lived fast and died young, ending its life in a cataclysmic release of energy. -
The Blue Hours Dusk, Early September, Just Beneath the Arctic
The Blue Hours Dusk, early September, just beneath the Arctic Circle, by a tideline glacier in East Greenland. The cusp of the seasons, the cusp of the globe, the cusp of the land, and the day’s cusp too: twilight, the blue hours. At this latitude, at this time of year, dusk lasts for two or three hours. We have returned from a long mountain day: pitched climbing up steep slabs and over snow slopes to a towered summit, from which height we could see the great inland ice-cap itself. Then down, late in the day, the darkness thickening around us, and the sun dropping fast behind the western peaks. So we sit together back at camp as the last light gathers on the water of the fjord, on icebergs, on the quartz seams in the white boulder-field above our tents. Twilight specifies the landscape in this way – but it also disperses it. Relations between objects are loosened, such that shape-shifts occur. Just before full night falls, and the aurora borealis begins, a powerful hallucination occurs. My tired eyes start to see every pale stone around our tent not as boulder but as bear, polar bear, pure bear, crouched for the spring. Across the Northern hemisphere, twilight is known as the trickster-time: breeder of delusion, feeder of fantasies, zone of becomings. In Greek, dusk is called lykophos, ‘wolf-light’. In Austria, too, it is Wolflicht. In French it is the phase entre chien et loup, ‘between dog and wolf’: the time when, as Chrystel Lebas has written, ‘it is nearly impossible to tell the difference between the howling sound coming from the two animals, when the domestic and familiar transform into the wild.’ I do not know the Greenlandic word for dusk, but perhaps it would translate as ‘bear-light’. -
Binocular Challenge Here
AHSP Binocular Observing Award Compiled by Phil Harrington www.philharrington.net • To qualify for the BOA pin, you must see 15 of the following 20 binocular targets. Check off each as you spot them. Seen # Object Const. Type* RA Dec Mag Size Nickname 1. M13 Her GC 16 41.7 +36 28 5.9 16' Great Hercules Globular 2. M57 Lyr PN 18 53.6 +33 02 9.7 86"x62" Ring Nebula 3. Collinder 399 Vul AS 19 25.4 +20 11 3.6 60' Coathanger/Brocchi’s Cluster 3.1 4. Albireo Cyg Dbl 19 30.7 +27 57 35” Color Contrasting Double 5.1 5. M27 Vul PN 19 59.6 +22 43 8.1 8’x6’ Dumbbell Nebula 6. NGC 6992 Cyg SNR 20 56.4 +31 43 - 60'x8 Veil Nebula (east) 7. NGC 7000 Cyg BN 20 58.8 +44 20 - 120'x100' North America Nebula 8. M15 Peg GC 21 30.0 +12 10 7.5 12’ Great Pegasus Cluster 9. M39 Cyg OC 21 32.2 +48 26 4.6 32' 10. Barnard 168 Cyg DN 21 53.2 +47 12 - 100'x10' West of Cocoon Nebula 11. IC 5146 Cyg BN/OC 21 53.5 +47 16 - 12'x12' Cocoon Nebula 12. M110 And Gx 00 40.4 +41 41 10 17’x10’ 13. M32 And Gx 00 42.8 +40 52 10 8’x6’ 14. M31 And Gx 00 42.8 +41 16 4.5 178’ Andromeda Galaxy 15. NGC 457 Cas OC 01 19.1 +58 20 6.4 13’ Owl Cluster/ET Cluster 16. -
Midnight Sun, Part II by PA Lassiter
Midnight Sun, Part II by PA Lassiter . N.B. These chapters are based on characters created by Stephenie Meyer in Twilight, the novel. The title used here, Midnight Sun, some of the chapter titles, and all the non-interior dialogue between Edward and Bella are copyright Stephenie Meyer. The first half of Ms. Meyer’s rough-draft novel, of which this is a continuation, can be found at her website here: http://www.stepheniemeyer.com/pdf/midnightsun_partial_draft4.pdf 12. COMPLICATIONSPart B It was well after midnight when I found myself slipping through Bella’s window. This was becoming a habit that, in the light of day, I knew I should attempt to curb. But after nighttime fell and I had huntedfor though these visits might be irresponsible, I was determined they not be recklessall of my resolve quickly faded. There she lay, the sheet and blanket coiled around her restless body, her feet bound up outside the covers. I inhaled deeply through my nose, welcoming the searing pain that coursed down my throat. As always, Bella’s bedroom was warm and humid and saturated with her scent. Venom flowed into my mouth and my muscles tensed in readiness. But for what? Could I ever train my body to give up this devilish reaction to my beloved’s smell? I feared not. Cautiously, I held my breath and moved to her bedside. I untangled the bedclothes and spread them carefully over her again. She twitched suddenly, her legs scissoring as she rolled to her other side. I froze. “Edward,” she breathed. -
Deep-Sky Objects - Autumn Collection an Addition To: Explore the Universe Observing Certificate Third Edition RASC NW Cons Object Mag
Deep-Sky Objects - Autumn Collection An addition to: Explore the Universe Observing Certificate Third Edition RASC NW Cons Object Mag. PSA Observation Notes: Chart RA Dec Chart 1) Date Time 2 Equipment) 3) Notes # Observing Notes # Sgr M24 The Sagittarias Star Cloud 1. Mag 4.60 RA 18:16.5 Dec -18:50 Distance: 10.0 2. (kly)Star cloud, 95’ x 35’, Small Sagittarius star cloud 3. lies a little over 7 degrees north of teapot lid. Look for 7,8 dark Lanes! Wealth of stars. M24 has dark nebula 67 (interstellar dust – often visible in the infrared (cooler radiation)). Barnard 92 – near the edge northwest – oval in shape. Ref: Celestial Sampler Floating on Cloud 24, p.112 Sgr M18 - 1. RA 18 19.9, Dec -17.08 Distance: 4.9 (kly) 2. Lies less than 1deg above the northern edge of M24. 3 8 Often bypassed by showy neighbours, it is visible as a 67 small hazy patch. Note it's much closer (1/2 the distance) as compared to M24 (10kly) Sgr M17 (Swan Nebula) and M16 – HII region 1. Nebula and Open Clusters 2. 8 67 M17 Wikipedia 3. Ref: Celestial Sampler p. 113 Sct M11 Wild Duck Cluster 5.80 1. 18:51.1 -06:16 Distance: 6.0 (kly) 2. Open cluster, 13’, You can find the “wild duck” cluster, 3. as Admiral Smyth called it, nearly three degrees west of 67 8 Aquila’s beak lying in one of the densest parts of the summer Milky Way: the Scutum Star Cloud. 9 64 10 Vul M27 Dumbbell Nebula 1. -
Excerpts from Dusk of Dawn: an Essay Toward an Autobiography Of
DUSK OF DAWN An Essay Toward an Autobiography of a Race Concept W. E. B. Du Bois Series Editor, Henry Louis Gates, Jr. Introduction by K. Anthony Appiah OXFORD UNIVERSITY PRESS Contents SERIES INTRODUCTION: THE BLACK LETTERS ON THE SIGN xi INTRODUCTION xxv APOLOGY xxxiii I. THEPLOT 1 II. A NEW ENGLAND BOY AND RECONSTRUCTION 4 III. EDUCATION IN THE LAST DECADES OF THE NINETEENTH CENTURY 13 IV. SCIENCE AND EMPIRE 26 V. THE CONCEPT OF RACE 49 VI. THE WHITE WORLD 68 VII. THE COLORED WORLD WITHIN 88 VIII. PROPAGANDA AND WORLD WAR 111 IX. REVOLUTION 134 INDEX 163 WILLIAM EDWARD BURGHARDT DUBOIS: A CHRONOLOGY 171 SELECTED BIBLIOGRAPHY 179 ix CHAPTER VII The Colored World Within Not only do white men but also colored men forget the facts of the Negro's dou ble environment. The Negro American has for his environment not only the white surrounding world, but also, and touching him usually much more nearly and compellingly, is the environment furnished by his own colored group. There are exceptions, of course, but this is the rule. The American Negro, therefore, is surrounded and conditioned by the concept which he has of white people and he is treated in accordance with the concept they have of him. On the other hand, so far as his own people are concerned, he is in direct contact with individuals and facts. He fits into this environment more or less willingly. It gives him a social world and mental peace. On the other hand and especially if in education and ambition and income he is above the average culture of his group, he is often resentful of its environilcg power; partly because he does not recognize its power and partly because he is determined to consider himself part of the white group from which, in fact, he is excluded. -
Binocular Star Gazing at RCDO 8-22-2015
The Ephemeris September 2015 Volume 26 Number 03 - The Official Publication of the San Jose Astronomical Association SJAA Tour and Fund Raiser for Lick Observatory As many of you know, our local Lick Observatory atop Mt. Hamilton, was threatened with termination of funding by the University of California Regents. Despite UC’s decision to reverse itself and reinstate it’s funding, Lick still fac- es major financial challenges. SJAA Director, Bill O’Neil, volunteered to or- ganize a private SJAA Tour of Lick Observatory with the purpose of raising awareness and Funds for Lick. Sept - Nov 2015 Events 34 generous SJAA members and their guests travelled up the winding Mt. Hamilton Road on May 27, 2015 and paid $50 per person to raise $1,700 for Board & General Meetings Saturday 9/26, 10/24, 11/21 Lick. In the last SJAA Ephemeris, there was an article about the recent Board Meetings: 6 -7:30pm Google Star Party during which Google announced they were granting Lick General Meetings: 7:30-9:30pm Observatory $500K per year for the next two years, with the hopes of generat- ing matching funds from private donors and other silicon valley companies. Solar Observing (locations differ) 9/19, 10/11, 11/1, Our host for the evening was Dr. Ellie Gates, one of Lick’s resident astrono- mers, assisted by public program telescope operator Bob Havner. Our Tour Fix-It Day (2-4pm) included: a presentation in the Lecture Hall about the history of James Lick Sunday 9/6, 10/4, 11/1 Observatory (first opened in 1888); a tour of the facility, including seeing the -
George Orwell in His Centenary Year a Catalan Perspective
THE ANNUAL JOAN GILI MEMORIAL LECTURE MIQUEL BERGA George Orwell in his Centenary Year A Catalan Perspective THE ANGLO-CATALAN SOCIETY 2003 © Miquel Berga i Bagué This edition: The Anglo-Catalan Society Produced and typeset by Hallamshire Publications Ltd, Porthmadog. This is the fifth in the regular series of lectures convened by The Anglo-Catalan Society, to be delivered at its annual conference, in commemoration of the figure of Joan Lluís Gili i Serra (1907-1998), founder member of the Society and Honorary Life President from 1979. The object of publication is to ensure wider diffusion, in English, for an address to the Society given by a distinguished figure of Catalan letters whose specialism coincides with an aspect of the multiple interests and achievements of Joan Gili, as scholar, bibliophile and translator. This lecture was given by Miquel Berga at Aberdare Hall, University of Wales (Cardiff), on 16 November 2002. Translation of the text of the lecture and general editing of the publication were the responsibility of Alan Yates, with the cooperation of Louise Johnson. We are grateful to Miquel Berga himself and to Iolanda Pelegrí of the Institució de les Lletres Catalanes for prompt and sympathetic collaboration. Thanks are also due to Pauline Climpson and Jenny Sayles for effective guidance throughout the editing and production stages. Grateful acknowledgement is made of regular sponsorship of The Annual Joan Gili Memorial Lectures provided by the Institució de les Lletres Catalanes, and of the grant towards publication costs received from the Fundació Congrés de Cultura Catalana. The author Miquel Berga was born in Salt (Girona) in 1952. -
Family Portrait Sessions Frequently Asked Questions Before Your Session
kiawahislandphoto.com Family Portrait Sessions Frequently Asked Questions before Your Session When you make an investment in photography, you want it to last a lifetime. Photographics has the expertise to capture the moment and the artistic style and resources to transform your images into works of art you’ll be proud to share and display. We want you to relax and enjoy the experience so all the joy and fun comes through in your portraits. If you have any concerns about your session, just give us a call or pull your photographer aside to discuss any special needs for your group. Relax, enjoy and smile. We’ve got this. Q: What should we wear? A: For outdoor photography on the beach, choose lighter tones and pastel colors for the most pleasing results. Family members don’t have to match exactly, but should stay coordinated with simple, comfortable clothing that blends with the beach environment. Avoid dark tops, busy patterns, graphics/logos, and primary colors that have a tendency to stand out and clash with the environment. Ladies, we’ll be kneeling and sitting in the sand so be wary of low necklines and short skirts. Overall…be comfortable. For great ideas visit our blog online. Q: When is the best time to take beach portraits? A: On the East Coast, the best time is the “golden hour” just before sunset when the light is softer and the temperature is more moderate. We don’t take portraits in the morning and early afternoon hours, because the sun on the beach is too intense which causes harsh shadows and squinting. -
Exploring Solar Cycle Influences on Polar Plasma Convection
Comparison of Terrestrial and Martian TEC at Dawn and Dusk during Solstices Angeline G. Burrell1 Beatriz Sanchez-Cano2, Mark Lester2, Russell Stoneback1, Olivier Witasse3, Marco Cartacci4 1Center for Space Sciences, University of Texas at Dallas 2Radio and Space Plasma Physics, University of Leicester 3European Space Agency, ESTEC – Scientific Support Office 4Istituto Nazionale di Astrofisica, Istituto di Astrofisica e Planetologia Spaziali 52nd ESLAB Symposium Outline • Motivation • Data and analysis – TEC sources – Data selection – Linear fitting • Results – Martian variations – Terrestrial variations – Similarities and differences • Conclusions Motivation • The Earth and Mars are arguably the most similar of the solar planets - They are both inner, rocky planets - They have similar axial tilts - They both have ionospheres that are formed primarily through EUV and X- ray radiation • Planetary differences can provide physical insights Total Electron Content (TEC) • The Global Positioning System • The Mars Advanced Radar for (GPS) measures TEC globally Subsurface and Ionosphere using a network of satellites and Sounding (MARSIS) measures ground receivers the TEC between the Martian • MIT Haystack provides calibrated surface and Mars Express TEC measurements • Mars Express has an inclination - Available from 1999 onward of 86.9˚ and a period of 7h, - Includes all open ground and allowing observations of all space-based sources locations and times - Specified with a 1˚ latitude by 1˚ • TEC is available for solar zenith longitude resolution with error estimates angles (SZA) greater than 75˚ Picardi and Sorge (2000), In: Proc. SPIE. Eighth International Rideout and Coster (2006) doi:10.1007/s10291-006-0029-5, 2006. Conference on Ground Penetrating Radar, vol. 4084, pp. 624–629.