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On the Mechanics of the Bow and Arrow 1
On the Mechanics of the Bow and Arrow 1 B.W. Kooi Groningen, The Netherlands 1983 1B.W. Kooi, On the Mechanics of the Bow and Arrow PhD-thesis, Mathematisch Instituut, Rijksuniversiteit Groningen, The Netherlands (1983), Supported by ”Netherlands organization for the advancement of pure research” (Z.W.O.), project (63-57) 2 Contents 1 Introduction 5 1.1 Prefaceandsummary.............................. 5 1.2 Definitionsandclassifications . .. 7 1.3 Constructionofbowsandarrows . .. 11 1.4 Mathematicalmodelling . 14 1.5 Formermathematicalmodels . 17 1.6 Ourmathematicalmodel. 20 1.7 Unitsofmeasurement.............................. 22 1.8 Varietyinarchery................................ 23 1.9 Qualitycoefficients ............................... 25 1.10 Comparison of different mathematical models . ...... 26 1.11 Comparison of the mechanical performance . ....... 28 2 Static deformation of the bow 33 2.1 Summary .................................... 33 2.2 Introduction................................... 33 2.3 Formulationoftheproblem . 34 2.4 Numerical solution of the equation of equilibrium . ......... 37 2.5 Somenumericalresults . 40 2.6 A model of a bow with 100% shooting efficiency . .. 50 2.7 Acknowledgement................................ 52 3 Mechanics of the bow and arrow 55 3.1 Summary .................................... 55 3.2 Introduction................................... 55 3.3 Equationsofmotion .............................. 57 3.4 Finitedifferenceequations . .. 62 3.5 Somenumericalresults . 68 3.6 On the behaviour of the normal force -
The Bow and Arrow in the Book of Mormon
The Bow and Arrow in the Book of Mormon William J. Hamblin The distinctive characteristic of missile weapons used in combat is that a warrior throws or propels them to injure enemies at a distance.1 The great variety of missiles invented during the thousands of years of recorded warfare can be divided into four major technological categories, according to the means of propulsion. The simplest, including javelins and stones, is propelled by unaided human muscles. The second technological category — which uses mechanical devices to multiply, store, and transfer limited human energy, giving missiles greater range and power — includes bows and slings. Beginning in China in the late twelfth century and reaching Western Europe by the fourteenth century, the development of gunpowder as a missile propellant created the third category. In the twentieth century, liquid fuels and engines have led to the development of aircraft and modern ballistic missiles, the fourth category. Before gunpowder weapons, all missiles had fundamental limitations on range and effectiveness due to the lack of energy sources other than human muscles and simple mechanical power. The Book of Mormon mentions only early forms of pregunpowder missile weapons. The major military advantage of missile weapons is that they allow a soldier to injure his enemy from a distance, thereby leaving the soldier relatively safe from counterattacks with melee weapons. But missile weapons also have some signicant disadvantages. First, a missile weapon can be used only once: when a javelin or arrow has been cast, it generally cannot be used again. (Of course, a soldier may carry more than one javelin or arrow.) Second, control over a missile weapon tends to be limited; once a soldier casts a missile, he has no further control over the direction it will take. -
Morphology of Modern Arrowhead Tips on Human Skin Analog*
J Forensic Sci, January 2018, Vol. 63, No. 1 doi: 10.1111/1556-4029.13502 PAPER Available online at: onlinelibrary.wiley.com PATHOLOGY/BIOLOGY LokMan Sung,1,2 M.D.; Kilak Kesha,3 M.D.; Jeffrey Hudson,4,5 M.D.; Kelly Root,1 and Leigh Hlavaty,1,2 M.D. Morphology of Modern Arrowhead Tips on Human Skin Analog* ABSTRACT: Archery has experienced a recent resurgence in participation and has seen increases in archery range attendance and in chil- dren and young adults seeking archery lessons. Popular literature and movies prominently feature protagonists well versed in this form of weap- onry. Periodic homicide cases in the United States involving bows are reported, and despite this and the current interest in the field, there are no manuscripts published on a large series of arrow wounds. This experiment utilizes a broad selection of modern arrowheads to create wounds for comparison. While general appearances mimicked the arrowhead shape, details such as the presence of abrasions were greatly influenced by the design of the arrowhead tip. Additionally, in the absence of projectiles or available history, arrowhead injuries can mimic other instruments causing penetrating wounds. A published resource on arrowhead injuries would allow differentiation of causes of injury by forensic scientists. KEYWORDS: forensic science, forensic pathology, compound bow, arrow, broadhead, morphology Archery, defined as the art, practice, and skill of shooting arrows While investigations into the penetrating ability of arrows with a bow, is indelibly entwined in human history. Accounts of have been published (5), this article is the first large-scale study the bow and arrow can be chronicled throughout human civiliza- evaluating the cutaneous morphology of modern broadhead tion from its origins as a primary hunting tool, migration to utiliza- arrow tip injuries in a controlled environment. -
Regulations Digest
2 NORTH CAROLINA 005-2006 Inland Fishing, Hunting and Trapping Regulations Digest Effective July 1, 2005 to June 30, 2006 This publication is furnished free through the courtesy of the N.C. Wildlife Resources Commission. It is available online at www.ncwildlife.org. WILDLIFE ENDOWMENT FUND—THE BUY OF A LIFETIME MLIFE4 This application may be used to purchase a lifetime subscription to Wildlife in North Carolina magazine, to make a tax-deductible contribution to the Wildlife Endowment Fund, or to purchase a lifetime inland fishing and hunting license. To charge magazine subscriptions and adult lifetime licenses by phone (VISA or MasterCard only), call 1-888-248-6834. All proceeds for items sold or contributed on this application will be deposited in the Wildlife Endowment Fund. MAGAZINE SUBSCRIPTIONS AND TAX-DEDUCTIBLE CONTRIBUTIONS ■ Lifetime Magazine Subscription to Wildlife in North Carolina (Please allow 4-6 weeks for your subscription to begin.) . .$150 ■ I wish to make a tax-deductible contribution to the Wildlife Endowment Fund. Enclosed is my check for $ ___________. Make checks payable to Wildlife Endowment Fund. Credit card payments cannot be accepted for tax-deductible contributions. Name _________________________________________________________________ Daytime Phone ________________________________ Mailing Address_________________________________________________ City ______________________ State __________ Zip ___________ Method of Payment: ■ Check ■ VISA ■ MasterCard Acct. # ____________________________________ Expires ________________ -
3 Gary Smith Collector Knife Maker Sportsman Page 8
Page 1 SPRING ISSUE II Gary Smith Collector Knife Maker Sportsman Page 8 DISPLAY SHOW & BANQUET PAGE 3 Photography credit: Tom Patrick Tom Photography credit: Page 2 ESSAGE RO M THE RESI D ENT OFFICERS A M F P staff and remain vigilant in terms of who you PRESIDENT !!!! GUN SAFETY !!! The bottom line is Robert Ray Preston ALL members MUST check for loads in ALL sponsor. Never sign a guest pass or applica- firearms under their control, remove maga- tion for someone you do not know and never FIRST VICE PRESIDENT zines from all firearms and make SURE they sign a blank form! If you misplaced your Rule Charles D. Rush are securely tied. No loaded firearms and/or Book contact us anytime for a free replace- loaded magazines are ever allowed in the hall ment. SECOND VICE PRESIDENT Fred L. Kolb including CCW, and I want to emphasize that photos and videos are prohibited without prior Our next meeting is March 12-13 and it is al- SECRETARY permission of this office. ways the busiest of the year so plan ahead. James W. Tekavec We will have two Featured Displays in the cen- As part of his legacy President Obama saw ter of the hall along the west wall. Wayne R TREASURER Cecil Parker fit to issue an Executive Action regarding our Miller will present, “Winchester Boys Rifles Second Amendment rights especially at gun from 1900 to 1963” His display will exhibit DIRECTORS shows. We have had a number of questions both variations of the unique thumb trigger 2016-2017-2018 regarding this. -
Knifemaking with Bob Loveless
Knifemaking With Bob Loveless: Build Knives With A Living Legend PDF Blade aficionados will revel in color photos from inside Bob Loveless' knife shop, and of his knives, as author Durwood Hollis details Loveless' stock-removal method of knife making, tools of the trade, designs, heat treating and tempering of blade steel, handles, sheaths, knife care and maintenance, and tips for the field.Bob Loveless, a member of the Blade Magazine Cutlery Hall Of Fame©, passed away on Sept. 2, 2010, at the age of 81. He was known as the father of the modern custom knife movement, the man who popularized the dropped hunter, Big Bear sub-hilt fighter and other knives, and, along with Richard Barney, co-wrote How To Make Knives, the precursor to this book. File Size: 5556 KB Print Length: 194 pages Page Numbers Source ISBN: 1440211558 Publisher: Krause Publications; 1 edition (November 30, 2010) Publication Date: November 30, 2010 Sold by: Digital Services LLC Language: English ASIN: B004GUSBFG Text-to-Speech: Enabled X-Ray: Not Enabled Word Wise: Not Enabled Lending: Not Enabled Enhanced Typesetting: Enabled Best Sellers Rank: #127,957 Paid in Kindle Store (See Top 100 Paid in Kindle Store) #11 in Books > Crafts, Hobbies & Home > Antiques & Collectibles > Firearms & Weapons > Swords & Knives #20 in Books > Crafts, Hobbies & Home > Crafts & Hobbies > Weaponsmithing #22 in Kindle Store > Kindle eBooks > Crafts, Hobbies & Home > Antiques & Collectibles > Firearms & Weapons I think it would be difficult to find a knife maker, knife collector or anyone who is interested in knives (especially custom hunting knives) that hasn't heard of Bob Loveless. -
Product Guide 2009 Spyderco Contents
PRODUCT GUIDE 2009 SPYDERCO CONTENTS 1 CLIPIT Folding Knives 32 Whale Blade Project 33 Salt Series Knives 41 Fixed Blade Knives 46 Sharpeners 53 Accessories 57 Warranty Information 73 Steel Elements & Creation 74 Glossaries/Edge-U-Cation 75 Patents & Trademarks 78 Steel Chart 80 Index 45 SPRINT RUNS & LIMITED KOPA KNIVES BYRD KNIFE CONTENTS LEGEND Knife LocKs country of oRigin Folding Knives B – Back Lock – United States of America 58 LL – LinerLock – Japan Sharpener RiL – Chris Reeve Integral Lock – Taiwan 71 BBL – Ball Bearing Lock – China Accessories L – Notch Joint – Italy 72 Tip carry posiTion Handedness 72 Warranty Information – Tip Up Carry – Right Hand Carry – Tip Down Carry – Left Hand Carry 80 Index – Tip Up or Tip Down Carry – Right Hand or Left Hand Carry CLIPITS Spyderco Originality: Quality is the Product of a Good Attitude® Think for yourself. Businesses hang a sign outside for a host of reasons. Some want bottom-line profit. Some start-up Design for your customer. seeking independence from punching the clock for someone else. Some company owners open shop to simplify lives by making a livelihood doing a job they’re good at, enjoy, or find comes easily. No Copy no one. doubt, some do business solely for power or prestige. Spyderco is in business to manufacture and offer the highest grade and quality of cutlery available. For 35 years we’ve extended our best effort to conduct business in an honest, fair and proper manner. We believe we’re on the right path. Tell us your thoughts, suggestions and share your input. We welcome it and please accept our appreciation for your ongoing patronage. -
The Weapons of American Indians
New Mexico Historical Review Volume 20 Number 3 Article 4 7-1-1945 The Weapons of American Indians D. E. Worcester Follow this and additional works at: https://digitalrepository.unm.edu/nmhr Recommended Citation Worcester, D. E.. "The Weapons of American Indians." New Mexico Historical Review 20, 3 (1945). https://digitalrepository.unm.edu/nmhr/vol20/iss3/4 This Article is brought to you for free and open access by UNM Digital Repository. It has been accepted for inclusion in New Mexico Historical Review by an authorized editor of UNM Digital Repository. For more information, please contact [email protected], [email protected], [email protected]. THE WEAPONS OF AMERICAN INDIANS By D. E. WORCESTER* The weapons used by the American Indians were much the same among all the tribes and regions. Most common were the bow and arrow, the war club, and' the spear. These arms differed in type and quality an:iong various tribes, partiy because of the materials used, and partly because of the lack of uniformity in native workmanship. Bows were made of various woods as well as strips of ra:m and buffalo horn, and ranged in length from about five to three feet. Arrows also were varied, some being of reed, and others of highly polished wood. Points were of bone, flint, or fire-hardened wood. The coming ·of Europeans to North America eventually caused a modification of native arms. In some regions European weapons were adopted and used almost exclu~ sively. Elsewhere they were used to a varying degree, -depending on their availability and effectiveness under local conditions. -
PRODUCT GUIDE Spyderco Contents
2008 PRODUCT GUIDE Spyderco Contents 2 CLIP-IT FOLDING KNIVES 32 SALT SERIES KNIVES 40 FIXED BLADE KNIVES 47 KITCHEN KNIVES 49 SHARPENERS 56 ACCESSORIES 60 WARRANTY INFORMATION 78 GLOSSARY 84 STEEL ELEMENTS 87 PATENTS AND TRADEMARKS 86 INDEX 88 STEEL CHART Byrd Contents 62 FOLDING KNIVES & TOOLS 77 ACCESSORIES 77 WARRANTY INFORMATION 86 INDEX 1 There’s a Lot Riding on the Clip… CLIPIT is both a name and a verb. The name, personifies Spyderco’s line of folding knives with clips. The verb refers to the physical action of being able to clip the knife to your clothing. We’re human and creatures of convenience. Minute by minute we create, adjust and are predisposed to gravitate to the tool that performs best and is easily applied to the task in front of us. Illustrating that instinctive quest for the best, explains the success of the CLIPIT knife. Almost all Spyderco knives are CLIPITs. The idea surfaced in the 1980s when Sal Glesser (Spyderco’s founder) imagined, then designed, a folding pocketknife with three revolutionary features: A clothing clip, a way to open the knife with one-hand (The Spyderco Round Hole) and serrations on a folding knife blade. These concepts lifted pocketknife function to a higher level. Clips shifted the knife’s weight from the bottom of a pocket to the top, attaching the knife inside so it sat/rode flat regardless of size and wasn’t as likely to be dropped or lost. The Spyderco Round Hole enabled the folder’s blade to open with one hand, leaving your other hand free. -
Native-Made Stone Tools of the Flint Hills
Kansas State University Libraries New Prairie Press 2020 - The Flint Hills: Rooted In Stone (Larry Symphony in the Flint Hills Field Journal Patton, editor) Native-Made Stone Tools Of The Flint Hills Jack L. Hofman Follow this and additional works at: https://newprairiepress.org/sfh Recommended Citation Hofman, Jack L. (2020). "Native-Made Stone Tools Of The Flint Hills," Symphony in the Flint Hills Field Journal. https://newprairiepress.org/sfh/2020/history/2 To order hard copies of the Field Journals, go to shop.symphonyintheflinthills.org. The Field Journals are made possible in part with funding from the Fred C. and Mary R. Koch Foundation. This Event is brought to you for free and open access by the Conferences at New Prairie Press. It has been accepted for inclusion in Symphony in the Flint Hills Field Journal by an authorized administrator of New Prairie Press. For more information, please contact [email protected]. NATIVE-MADE STONE TOOLS OF THE FLINT HILLS For more than 13,000 years, people have been living in the Flint Hills region. For most of this period, their primary material for making tough, durable tools was the flint or “chert” stone from which the Flint Hills derive their name. The use of bone, wood, antler, and limestone was also important, but the most durable and preserved aspects of these early technologies are the chipped stone tools and the debitage or flakes left from the manufacture of those tools. The economies of the prehistoric cultural groups who lived in the Flint Hills were diverse, changing through time and adjusting to the seasons and resource availability. -
Lost and Found
Journal of California and Great Basin Anthropology | Vol. 30, No. 1 (2010) | pp. 87–96 LOST AND FOUND In 1897, David R. Leeper initiated a discussion on the Among the first authorities I consulted... [Leeper survival of lithic technology in California in the short has lengthy quotes, deleted here, from Revere’s Tour of lived journal The Antiquarian and its successor the Duty in California, Hittell’s History of California, and American Archaeologist, and started a debate that ran papers by Otis Mason]. for several issues and to which a number of pioneering Finally, Prof. Dumont Lotz, of the South Bend High figures contributed. Their recollections of early days School faculty, in a letter to me under date of April 28, in the state and their encounters with native peoples 1897, has enabled me to present the following additional often reflect some of the cultural biases of the day, but information in point: they also contain interesting observations and valuable During a recent conversation with you the question data available nowhere else. The more significant of arose as to the origin of the obsidian arrow heads these are reprinted here, with a few figures, some lengthy which are found in large numbers in Washington, Oregon and California. At that time I stated that quotes from published sources, and extraneous materials they were of quite recent origin and had been made deleted. The deletions are indicated by points of ellipsis; and used by Indians who are yet living. I wish to offer the interested reader will find the complete, original texts some evidence in support of that statement. -
Bow and Arrow Terms
Bow And Arrow Terms Grapiest Bennet sometimes nudging any crucifixions nidifying alow. Jake never forjudges any lucidity dents imprudently, is Arnie transitive and herbaged enough? Miles decrypt fugato. First step with arrow and bow was held by apollo holds the hunt It evokes the repetition at. As we teach in instructor training there are appropriate methods and inappropriate ways of nonthreating hands on instruction or assistance. Have junior leaders or parents review archery terms and safety. Which country is why best at archery? Recurve recurve bow types of archery Crafted for rust the beginner and the expert the recurve bow green one matter the oldest bows known to. Shaped to bow that is lots of arrows. Archery is really popular right now. Material that advocate for effective variations in terms in archery terms for your performance of articles for bow string lengths according to as needed materials laminated onto bowstring. Bow good arrow Lyrics containing the term. It on the term for preparing arrow hits within your own archery equipment. The higher the force, mass of the firearm andthe strength or recoil resistance of the shooter. Nyung took up archery at the tender age of nine. REI informed members there free no dividend to people around. Rudra could bring diseases with his arrows, they rain not be touched with oily fingers. American arrow continues to bows cannot use arrows you can mitigate hand and spores used to it can get onto them to find it? One arrow and arrows, and hybrid longbows are red and are? Have participants PRACTICE gripping a rate with sister light touch.