Science Documentary: Planet formation, a documentary on elements, early earth and plate tectonics
About 9 billion years after the big bang, an event which brought everything we see into existence, our earth and the other planets in our solar system formed out of the debris left over from the formation of our sun.
Many years before our sun was formed, another star exploded in a supernova, and sent a shockwave hurdling toward a cloud of gas and dust. And as that shockwave slammed into the cloud of gas and dust, it compressed and heated the cloud and sent it spinning into an accretion disk of stellar debris.
This debris is made up of all the elements of the periodic table of elements. And all these elements are what make up you and I and all living things in the universe. That is why scientists say that we are made of star dust.
As a star forms, it fuses hydrogen atoms together to form helium, then after the star has exhausted its supply of hydrogen, it starts to fuse helium atoms, that helium into carbon and carbon into oxygen, in a process called nuclear fusion. The biggest stars form heavier and heavier elements. As soon as they form iron, the fusion stops and the star explodes in a supernova explosion.
But if the star has only formed iron, than how do we get the much heavier elements? During a supernova, the heat generated is enough to continue to fuse heavier and heavier elements like sulfur, sodium, potassium, scandium, titanium vanadium, chromium, nickel, cobalt, gold and silver and others.
When the earth formed, the heavier elements sank into the center of the earth and formed an iron core. While other lighter elements remained on top and formed the earths crust.
The Earth's crust is constantly moving, and if you were to look at a map of early earth, it would look strikingly different than it does now. And it will look very different in the distant future. Plate tectonics is the theory that describes the movement of the earth's crust, which is made up of plates that slam into each other or grind against each other. The movement of these plates formed mountains, volcanoes and the continents as we see them today.
Science Documentary: Expansion of the Universe
https://www.youtube.com/watch?v=nxsOVYmwSOkScience Documentary: Star Formation
https://www.youtube.com/watch?v=nxsOVYmwSOkScience Documentary: Cosmic Microwave Background
https://www.youtube.com/watch?v=nxsOVYmwSOkScience Documentary: Electromagnetic Spectrum
https://www.youtube.com/watch?v=41Q6FeO-_8IScienceRound on Google+
https://plus.google.com/u/0/b/102384224840004876140/102384224840004876140/postsAbout the Site 🌐
This site provides links to random videos hosted at YouTube, with the emphasis on random. 🎥
Origins of the Idea 🌱
The original idea for this site stemmed from the need to benchmark the popularity of a video against the general population of YouTube videos. 🧠
Challenges Faced 🤔
Obtaining a large sample of videos was crucial for accurate ranking, but YouTube lacks a direct method to gather random video IDs.
Even searching for random strings on YouTube doesn't yield truly random results, complicating the process further. 🔍
Creating Truly Random Links 🛠️
The YouTube API offers additional functions enabling the discovery of more random videos. Through inventive techniques and a touch of space-time manipulation, we've achieved a process yielding nearly 100% random links to YouTube videos.
About YouTube 📺
YouTube, an American video-sharing website based in San Bruno, California, offers a diverse range of user-generated and corporate media content. 🌟
Content and Users 🎵
Users can upload, view, rate, share, and comment on videos, with content spanning video clips, music videos, live streams, and more.
While most content is uploaded by individuals, media corporations like CBS and the BBC also contribute. Unregistered users can watch videos, while registered users enjoy additional privileges such as uploading unlimited videos and adding comments.
Monetization and Impact 🤑
YouTube and creators earn revenue through Google AdSense, with most videos free to view. Premium channels and subscription services like YouTube Music and YouTube Premium offer ad-free streaming.
As of February 2017, over 400 hours of content were uploaded to YouTube every minute, with the site ranking as the second-most popular globally. By May 2019, this figure exceeded 500 hours per minute. 📈
List of ours generators⚡
Random YouTube Videos Generator
Random Film and Animation Video Generator
Random Autos and Vehicles Video Generator
Random Music Video Generator
Random Pets and Animals Video Generator
Random Sports Video Generator
Random Travel and Events Video Generator
Random Gaming Video Generator
Random People and Blogs Video Generator
Random Comedy Video Generator
Random Entertainment Video Generator
Random News and Politics Video Generator
Random Howto and Style Video Generator
Random Education Video Generator
Random Science and Technology Video Generator
Random Nonprofits and Activism Video Generator
