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 | | "Free Education Online is Possible!" | My goal is to make the best free education website on the net!
There are so many universities providing the free content - MIT's OCW, UC Berkley, Washington University and other but they are not widely known.
Also the net is full of various physics, chemistry, biology, tech, astronomy video clips which I am gonna put here.
Member Since: May 20, 07
Last Login: Jun 22, 07 |
| | Subscribers: | 24 | | Comments: | 0 | | Videos: | 32 | | Friends: | 0 |
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| Age: 24 | | Country: |  Latvia |
| | Gender: Male | | Dating Status: Single | | Hometown: Riga | | |
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| |  | Soliton Wave in a Bose-Einstein Condensate
02:14
http://www.FreeScienceLectures.comThis video presents dark solitons in a trapped Bose-Einstein condensate decaying into quantum vortex rings.Simulation more...of condensates with vortices in rotating anisotropic traps, then a 12-vortex array, then condensate containing a soliton in a spherical trap.---
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Added: Jun 16, 07
Views: 283
Category: Science & Technology |
|  | Sodium Reacts with Liquid Water
00:27
http://www.FreeScienceLectures.comSodium is a chemical element which has the symbol Na (Latin: natrium), atomic number 11, atomic mass 22.9898 g/mol, more...oxidation number +1.Sodium is a soft, silvery white, highly reactive element and is a member of the alkali metals within "group 1" (formerly known as 'group IA'). It is classified as an "inorganic macro-mineral".t has only one stable isotope, 23Na. Sodium was first isolated by Sir Humphry Davy in 1807 by passing an electric current through molten sodium hydroxide.Sodium quickly oxidizes in air so it must be stored in an inert environment such as kerosene.Sodium is present in great quantities in the Earth's oceans as sodium chloride. It is also a component of many minerals, and it is an essential element for animal life.This video shows what happens if you place a piece of sodium in water. It does not react as quickly as potassium or lithium. The reaction is slower, initially causing it to burn and as the temperature rises, it is probably broken into more pieces, exposing more surface area to water, the reactions speed up and the piece explodes.---
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Added: Jun 16, 07
Views: 254
Category: Science & Technology |
| |  | Sodium Reacts with Four Acids
00:40
http://www.FreeScienceLectures.comHere is an experiment where sodium reacts with four different acids - 6M HCl, 12M HCl, 6M HNO3 and 15M HNO3.The more...reaction with 15M HNO3 is the fastest and 12M HCl is the slowest reaction and it still hasn't all reacted even after 75 seconds---
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Added: Jun 16, 07
Views: 160
Category: Science & Technology |
|  | Sodium Burning in Air
00:46
http://www.FreeScienceLectures.comSodium does not react easily with oxygen at a room temperature so it has to be heated up a little for the reaction more...to start.Since air is mostly oxygen once the reaction starts it gets pretty violent and the piece of sodium explodes.---
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Added: Jun 16, 07
Views: 239
Category: Science & Technology |
| |  | Rotation, Seasons and Surface of Planet Mars
03:05
http://www.FreeScienceLectures.comMars is the fourth planet from the Sun in the Solar System. The planet is named after Mars, the Roman god of war. more...It is also referred to as the "Red Planet" because of its reddish appearance as seen from Earth.A terrestrial planet, Mars has a thin atmosphere and surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts and polar ice caps of Earth. It is the site of Olympus Mons, the highest known mountain in the solar system, and of Valles Marineris, the largest canyon. In addition to its geographical features, Mars' rotational period and seasonal cycles are likewise similar to those of the Earth.This video shows the rotation speed of the red planet Mars relative to Earth, the seasonal cycles on Mars and its surface structure.---
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Added: Jun 16, 07
Views: 248
Category: Science & Technology |
|  | Rocket Carrying GPS 2R Satellite Explodes
01:40
http://www.FreeScienceLectures.comAccidents happen. Even at NASA where they have strong testing and integrity procedures.A rocket carrying a GPS 2R more...just seconds into the mission explodes.
More than 250 tons of flaming debri and rocket fuel rain down from the sky. The explosion occurs so close the the ground that the area around looks like a war zone.Amazingly no one is injured!The investigators later determine that there was a 17 foot crack in one of the boosters.---
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Added: Jun 16, 07
Views: 183
Category: Science & Technology |
| |  | Richard Feynman: The Beauty of the Flower
01:43
http://www.FreeScienceLectures.comThis video is from 1981. The interview is also the subject of Feynman's book The Pleasure of Finding Things Out. more...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 evolved in order to attract insects to pollinate it is interesting - it means that insects can see the color.It adds a question - does this aesthetic sense also exist in the lower forms that are... why is it aesthetic, all kinds of interesting questions which a science knowledge only adds to the excitement and mystery and the awe of a flower.It only adds. I don't understand how it subtracts.---
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Added: Jun 16, 07
Views: 290
Category: Science & Technology |
|  | Resonance Phenomena in 2D on a Plane
02:13
http://www.FreeScienceLectures.comThe plane is vibrated at some specific frequency. The waves travel across the plane and at some places they add together more...and at other places they cancel out. Where they cancel out the salt stucks because there is no vibrations and at other places it just gets vibrated away.---
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Added: Jun 16, 07
Views: 281
Category: Science & Technology |
| |  | Rare, Prehistoric Frilled Shark in Japan
01:35
http://www.FreeScienceLectures.comEver seen a shark like this?This species of prehistoric shark called Frilled Shark and it is very rarely seen alive more...because its natural habitat is some 600 meters or more under the sea.The frilled shark, Chlamydoselachus anguineus, is a primitive shark species, of the family Chlamydoselachidae in the order Hexanchiformes.---
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Added: Jun 16, 07
Views: 3,018
Category: Science & Technology |
|  | Puma, Bird and Exploding Balloon in Slow Motion
01:42
http://www.FreeScienceLectures.comThis video shows action much slower than you see on television or with your eyes.For example, a puma running ten more...times slower, you can see every muscle moving. Then some bird flying 10 times slower. But that's not all! A better camera can record up to 1000 times slower!An exploding balloon is shown at normal speed of 25 fps and 80 times slower. Even a simple action is transformed, revealing beauty and incredible details that we could not have glimpsed any other way.With these types of cameras we are able to investigate the fastest animals in the world!---
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Added: Jun 16, 07
Views: 422
Category: Science & Technology |
| |  | Potassium Burns in Air
00:31
http://www.FreeScienceLectures.comWhen potassium is heated is starts reacting with oxygen. Since air is mostly oxygen, the reaction happens pretty quickly more...and it starts burning.---
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Added: Jun 16, 07
Views: 160
Category: Science & Technology |
|  | Popcorn Bursting in Slow Motion
00:21
http://www.FreeScienceLectures.comA slow motion video of a corn popping.---
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Added: Jun 16, 07
Views: 349
Category: Science & Technology |
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