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Title          
Sugar+NaOH and KMnO4 
   
 
Abstract    
An experiment showing Sugar+NaOH and KMnO4
 
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Added By - 123
Subject - Chemistry and Chemical Engineering
Document Type - Experiments
Video Duration - 00:00:02
 
 
 

 

Title          
Plotting a Four Dimensional Function 
   
 
Abstract    
This animated plot shows a sequence of three dimensional "slices" of a four dimensional function. The function is f(r,s,t) = r^2 * s^2 * t^5. r and s are each given a range of -1 to 1. f(r,s,t) is plotted from -2 to 2. t is varied from -4 to 4. For a given value of t a three dimensional plot is displayed.
 
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Added By - 123456
Subject - Softwares and Programming Languages
Document Type - Demonstration
Video Duration - 00:00:02
 
 
 

 

Title          
Richard Feynman - Ode on a Flower 
   
 
Abstract    
More clips from the Interview @ http://www.bbc.co.uk/sn/tvradio/progr...
Richard Feynman on the appreciation of nature. Video is from 1981 BBC Interview. The interview is also the subject of Feynman's book The Pleasure of Finding Things Out.

I have a friend who's an artist and he's some times taken a view which I don't agree with very well. He'll hold up a flower and say, "look how beautiful it is," and I'll agree, I think. And he says, "you see, I as an artist can see how beautiful this is, but you as a scientist, oh, take this all apart and it becomes a dull thing." And I think he's kind of nutty.

First of all, the beauty that he sees is available to other people and to me, too, I believe, although I might not be quite as refined aesthetically as he is. But I can appreciate the beauty of a flower.

At the same time, I see much more about the flower that he sees. I could imagine the cells in there, the complicated actions inside which also have a beauty. I mean, it's not just beauty at this dimension of one centimeter: there is also beauty at a smaller dimension, the inner structure...also the processes.

The fact that the colors in the flower are evol...
 
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Added By - 123456
Subject - Philosophy
Document Type - Discussion
Video Duration - 00:00:02
 
 
 

 

Title          
3.5 miles in 10 seconds 
   
 
Abstract    
Born in Berkeley, California, Crossfield grew up in California and Washington. He served with the U.S. Navy as a flight instructor and fighter pilot during World War II. From 1946-1950, he worked in the University of Washington's Kirsten Wind Tunnel while earning his bachelor's(1949) and master's degrees(1950) in aeronautical engineering. In 1950, he joined the National Advisory Committee for Aeronautics' High-Speed Flight Station (now the NASA Dryden Flight Research Center) at Edwards Air Force Base, California, as an aeronautical research pilot. In those early days, it was called Muroc Field, reverse spelling of the wealthy California Corum family who donated the land to the Army Air Corps. Crossfield joined the Navy because he could enter flight training two weeks earlier than a date offered by the Army Air Corps.

Crossfield demonstrated his flight test skills on his very first student solo. His instructor was not available on the designated early morning, so Crossfield, on his own, took off and went through maneuvers he had practiced with his instructor, to include spin entry and spin recovery. During the first spin, Crossfield experienced vibrations, banging, and noise in the aircraft that he had never encountere...
 
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Added By - 123456
Subject - Aeronautics and Astronautics
Document Type - Profile
Video Duration - 00:00:02
 
 
 

 

Title          
Waves in a Large Free Sphere of Water 
   
 
Abstract    
Waves in a Large Free Sphere of Water - An experiment at the International Space Station. What humans perceive as "weight" is not actually the force of gravity pulling us towards the ground (actually, towards the center of the Earth — although this is the technical definition of "weight"). What we feel as "weight", is actually the normal reaction force of the ground (or whatever surface we are supported by) "pushing" upwards against us to counteract gravity's downward pull — that is: the "apparent weight". (In the remainder of this article, the term 'weight', without 'apparent', is used in this sense.) While this is not always intuitive, imagine the floor dropping out from under you: without it, you'd be falling — and experiencing weightlessness. It's the floor supporting you against gravity's pull — and which keeps you from falling to the center of the Earth — that creates the sensation of "weight".

For example: a person in a broken lift in free-fall "experiences" weightlessness. This is because there is no force from the lift's floor on the person's feet, against the pull of gravity, as both the lift and the person ...
 
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Added By - 123456
Subject - Physics
Document Type - Experiments
Video Duration - 00:00:02
 
 
 

 

Title          
Revit Building Tutorial 
   
 
Abstract    
Autodesk Revit is architectural BIM software for Microsoft Windows, currently developed by Autodesk, which allows the user to design with parametric modeling and drafting elements. BIM is a new Computer Aided Design (CAD) paradigm that allows for intelligent, 3D and parametric object-based design. In this way, Revit provides full bi-directional associativity. A change anywhere is a change everywhere, instantly, with no user interaction to manually update any view. A BIM model contains the buildings full life cycle, from concept to construction to decommissioning. This is made possible by Revit's underlying relational database architecture which its creators call the parametric change engine.

Autodesk purchased the Massachusetts-based Revit Technology Corporation for $133 million US in 2002.[1] The latest released version is Revit Architecture 2008 (April 2007) and AutoCAD Revit Architecture Suite 2008 (which includes AutoCAD 2008 32-bit & 64-bit).

Revit is a single file database that can be shared among multiple users. Plans, sections, elevations and schedules are all interconnected, and if a user makes a change in one view, the other views are automatically updated. Thus, Revit d...
 
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Added By - 123456
Subject - Softwares and Programming Languages
Document Type - Demonstration
Video Duration - 00:00:02
 
 
 

 

Title          
CEV NASA space launch rocket trip to moon 
   
 
Abstract    
The Draft Statement of Work for the CEV was issued by NASA on December 9, 2004, and slightly more than one month later, on January 21, 2005, NASA issued a Draft Request For Proposal. The Final RFP was issued on March 1, 2005,[2] with the potential bidders being asked to answer by May 2, 2005.

NASA had planned to have a suborbital or an Earth orbit fly-off called Flight Application of Spacecraft Technologies (FAST) between two teams' CEV designs before September 1, 2008. However, in order to permit an earlier date for the start of CEV operations, Administrator Griffin had indicated that NASA would select one contractor for the CEV in 2006. From his perspective, this would both help eliminate the currently planned four-year gap between the retirement of the Shuttle in 2010 and the first manned flight of the CEV in 2014 (by allowing the CEV to fly earlier), and save over $1 billion for use in CEV development.[3]

On June 13, 2005, NASA announced the selection of two consortia, Lockheed Martin Corp. and the team of Northrop Grumman Corp. and The Boeing Co. for further CEV development work.[4] Each team had received a US$28 million contract to come up with a complete design for the CEV and its launch vehicle un...
 
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Added By - 123456
Subject - Aeronautics and Astronautics
Document Type - Documentary
Video Duration - 00:00:02
 
 
 

 

Title          
How RSS Feeds Work 
   
 
Abstract    
RSS is a family of Web feed formats used to publish frequently updated content such as blog entries, news headlines or podcasts. An RSS document, which is called a "feed," "web feed," or "channel," contains either a summary of content from an associated web site or the full text. RSS makes it possible for people to keep up with their favorite web sites in an automated manner that's easier than checking them manually.

RSS content can be read using software called an "RSS reader," "feed reader" or an "aggregator." The user subscribes to a feed by entering the feed's link into the reader or by clicking an RSS icon in a browser that initiates the subscription process. The reader checks the user's subscribed feeds regularly for new content, downloading any updates that it finds.

The initials "RSS" are used to refer to the following formats:

Really Simple Syndication (RSS 2.0)
RDF Site Summary (RSS 1.0 and RSS 0.90)
Rich Site Summary (RSS 0.91)
RSS formats are specified using XML, a generic specification for the creation of data formats.

The RSS formats were preceded by several attempts at syndication that did not achieve widespread popularity. The basic...
 
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Added By - 123
Subject - Softwares and Programming Languages
Document Type - White Board
Video Duration - 00:00:02
 
 
 

 

Title          
Theory of Lift Generation - Airfoil 
   
 
Abstract    

There have been varies theories explaining the production of lift by an airfoil. Interestingly, many rather most of these have been misconceived and hence are false. This lists the major theories proposed and the drawbacks they suffer finally leading to a correct acceptable theory.

A fluid flowing past the surface of a body exerts a force on it. Lift is defined to be the component of this force which is perpendicular to the oncoming flow direction.[1] It contrasts with the drag force, which is defined to be the component of the fluid-dynamic force  

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Added By - anandsaxena
Subject - Aeronautics and Astronautics
Document Type - White Board
Video Duration - 00:00:02
 
 
 

 

Title          
Building a Human - Comments by Princeton prof... 
   
 
Abstract    

Lee M. Silver (born 1952) is a professor at Princeton University in the Department of Molecular Biology and the Woodrow Wilson School of Public and International Affairs. He also has joint appointments in the Program in Science, Technology, and Environmental Policy, the Center for Health and Wellbeing, the Office of Population Research, and the Princeton Environmental Institute, all at Princeton University.

Silver is the author of the controversial book Remaking Eden: How Genetic Engineering and Cloning Will Transform the American Family (1998). In the book he takes a positive view on human cloning, designer babies and similar prospects. This attracted harsh criticism from various sides. In this book he coined the term  

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

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