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Levanna projectile points are stone projectile points manufactured by Native Americans what is now the Northeastern United States, generally in the time interval of 700-1350 AD. They are true arrowheads rather than atlatl dart points, and they derive their name from the specimens found at the Levanna site in Cayuga County, New York .
Projectile points come in an amazing variety of shapes and styles, which vary according to chronological periods, cultural identities, and intended functions. Typological studies of projectile points have become more elaborate through the years. For instance, Gregory Perino began his categorical study of projectile point typology in the late ...
In archaeology, lithic analysis is the analysis of stone tools and other chipped stone artifacts using basic scientific techniques. At its most basic level, lithic analyses involve an analysis of the artifact's morphology, the measurement of various physical attributes, and examining other visible features (such as noting the presence or absence of cortex, for example).
Over the years the database has steadily grown in size and scope, as has the associated website. From its original database of 9,153 points in 1990, [7] [13] to 12,791 points by 2000, [4] to some 30,000 points in 2010, [1] the continued growth of PIDBA serves as an example of academic and public cooperation and scientific data sharing. [1] [6] [15]
Arrowheads are attached to arrow shafts to be shot from a bow; similar types of projectile points may be attached to a spear and "thrown" by means of an atlatl (spear thrower). The arrowhead or projectile point is the primary functional part of the arrow, and plays the largest role in determining its purpose.
Motion - the relation between the projectile acceleration and the pressure on its base. Burning rate - a function of the propellant surface area and an empirically derived burning rate coefficient which is unique to the propellant. Form function - a burning rate modifying coefficient that includes the shape of the propellant.
Example of a ballistic table for a given 7.62×51mm NATO load. Bullet drop and wind drift are shown both in mrad and MOA.. A ballistic table or ballistic chart, also known as the data of previous engagements (DOPE) chart, is a reference data chart used in long-range shooting to predict the trajectory of a projectile and compensate for physical effects of gravity and wind drift, in order to ...
Examples of fluted and unfluted Dalton points. The Dalton tradition is a Late Paleo-Indian and Early Archaic projectile point tradition. It is named after S. P. Dalton, a judge who first discovered these artifacts in Missouri. [1] These points appeared in most of southeast North America from c. 10,700 BCE to at least c. 8,400 BCE. [2]