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What is Social Anthropology 
A brief overview of social anthropology and the study of other cultures. Please see www.alanmacfarlane.com for the context and further films
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Added By - 123
Subject - Anthropology
Document Type - Definition
Video Duration - 00:00:02


Influence of a Streamwise Pressure Gradient o... 

In this video, Kiran Dellimore gives a broad overview of his research paper entitled  'Influence of a Streamwise Pressure Gradient on Film-Cooling Effectiveness' published in the JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER,Vol. 23, No. 1, January-March 2009. His co-authors are Carlos Cruz, Andre W. Marshall, and Christopher P. Cadou all from the University of Maryland, College Park, Maryland 20742.

The paper may be accessed using the following DOI: 10.2514/1.35717

Film cooling is widely used in conventional gas turbine and rocket engines to minimize thermal loading of engine structures and to manage heat transfer between hot, reacting gases and cooler structural components. Previous experimental work has shown that streamwise pressure gradients strongly influence the performance of the film.This paper extends semi-empirical modeling ideas for wall-jet film cooling to include the effects of adverse and favorable pressure gradients. The extended model shows that a pressure gradient’s effect on cooling performance depends on whether the velocity of the film is greater than the core flow (a wall-jet...

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Added By - kdellimo
Subject - Aeronautics and Astronautics
Document Type - Journal Paper Discussion
Video Duration - 00:05:20


Sand Art 
Sand animation is a term which has two meanings. It is the name given to a style of live performance art, and also to a type of animation. In the former, an artist creates a series of images using sand, a process which is achieved by applying sand to a surface and then rendering images by drawing lines and figures in the sand with one's hands. To increase visibility and to add further artistic aesthetic, a sand animation performer will often use the aid of an overhead projector or lightboard. In the latter, animators move around sand on a backlighted or frontlighted piece of glass to create each frame for their animated films. Caroline Leaf is a pioneer of this type of animation. It has also been intermittently used in recent years by Belarusfilm.

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Added By - 123456
Subject - Arts
Document Type - Documentary
Video Duration - 00:00:02


Leaping shampoo and the stable Kaye effect  
DOI - 10.1088/1742-5468/2006/07/P07007 Shear-thinning fluids exhibit surprisingly rich behavior. One example is the Kaye effect which occurs when a thin stream of a solution of polyisobutylene in decalin is poured into a dish of the fluid. As pouring proceeds, a small stream of liquid occasionally leaps upward from the heap. This surprising effect, which lasts only a second or so, is named after its first observer, Kaye, who could offer no explanation for this behaviour. Later, Collyer and Fischer suggested from 250 frames s−1 cine recordings that the fluid must be highly shear thinning as well as elastic and 'pituitous' (slimy or sticky). In addition, their results suggested that a rigid surface is required to back the reflected liquid stream. While the words bouncing and reflection are associated with elastic effects, we will show here that the Kaye effect is in fact a continuous flow phenomenon. We show that the Kaye effect works for many common fluids, including shampoos and liquid soaps. We reveal its physical mechanism (formation, stability and disruption) through high-speed imaging. The measurements are interpreted with a simple theoretical model including only the shear thinning behaviour of the liquid; elastic p...
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Added By - autocrawler
Subject - Mechanical Engineering
Document Type - Journal Paper Discussion
Video Duration - moderate


Lugosi teaches math - Many Vs Infinite 2 

Béla Lugosi teaches teaches advanced mathematic.

Added: February 07, 2007 Béla Lugosi teaches teaches advanced mathematical concepts. This is rare footage of Lugosi in his last on screen contibution in what is consdered by many a low point in his career and what is considered by some inspirational. This educational series was left unfinised due to Lugosi's death in 1958. The series was an attempt to show undergraduate students that math is not scary. Lugosi's hidden love for mathematics is illuminated by his animated teaching style.

Béla Lugosi (October 20, 1882 - August 16, 1956), was a Hungarian actor best known for his portrayal of Count Dracula in the American

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Added By - appliedmath
Subject - Mathematics
Document Type - Course Lecture
Video Duration - 00:09:02


high speed camera: lighter 

A high speed camera is a device used for recording slow-motion playback films, or used for scientific study of transient phenomena.


A normal motion picture is filmed and played back at 24 frames per second, while television uses 25 frames/s (PAL) to 29.97 frames/s (NTSC). High speed cameras can film up to 250,000 frames/s by running the film over a rotating prism or mirror instead of using a shutter, thus reducing the need for moving parts. Using this ...

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Added By - matlabuser
Subject - Laboratory Equipment
Document Type - Patents and Inventions
Video Duration - 00:00:24


SEM Stage U2B 
SEM stage adjustments, movements and sample loading.A demonstration video with instructions on the basic operation of an electron scanning microscope. The scanning electron microscope (SEM) is a type of electron microscope that images the sample surface by scanning it with a high-energy beam of electrons in a raster scan pattern. The electrons interact with the atoms that make up the sample producing signals that contain information about the sample's surface topography, composition and other properties such as electrical conductivity.The types of signals produced by an SEM include secondary electrons, back scattered electrons (BSE), characteristic x-rays, light (cathodoluminescence), specimen current and transmitted electrons. These types of signal all require specialized detectors for their detection that are not usually all present on a single machine. The signals result from interactions of the electron beam with atoms at or near the surface of the sample. In the most common or standard detection mode, secondary electron imaging or SEI, the SEM can produce very high-resolution images of a sample surface, revealing details about 1 to 5 nm in size. Due to the way these images are created, SEM micrographs have a very large depth ...
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Added By - quantum
Subject - Physics
Document Type - Demonstration
Video Duration - 00:05:45


Structural Collapse: the classic case -Tacoma... 

The collapse of the bridge was recorded on film by Barney Elliott, owner of a local camera shop, and shows Leonard Coatsworth leaving the bridge after exiting his car. In 1998, The Tacoma Narrows Bridge Collapse was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant." This footage is still shown to engineering, architecture, and physics students as a cautionary tale.[9] Elliot's original films of the construction and collapse of the bridge were shot on 16mm  

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Added By - justin
Subject - Civil and Environmental Enginering
Document Type - Demonstration
Video Duration - 00:04:12

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