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Materials That Glow Under Black Light
Question: What Materials Glow Under a Black or Ultraviolet Light? Answer: There are a lot of everyday materials that fluoresce, or glow, when placed under a black light. A black light gives off highly energetic ultraviolet light. You can't see this part of the spectrum, which is how 'black lights' got their name. Fluorescent substances absorb the ultraviolet light and then re-emit it almost instantaneously. Some energy gets lost in the process, so the emitted light has a longer wavelength than the absorbed radiation, which makes this light visible and causes the material to appear to glow. Fluorescent molecules tend to have rigid structures and delocalized electrons. White Paper White paper is treated with fluorescent compounds to help it appear brighter and therefore whiter. You may wish to browse the Black Light Photo Gallery to see more examples of materials that glow under a black light.
2011 Starchild Skull Preliminary DNA Report
Starchild Skull DNA Analysis Report—2011 A Layman's summary of this report is available HERE SUMMARY: Early in 2011, a geneticist attempting to recover Starchild Skull DNA identified four fragments that matched with human mitochondrial DNA (mtDNA). 1. 2. 3. 4. 2003 DNA Testing 5. 454 Life Sciences Technology 6. 2010 DNA Testing & Results 7. 2003 vs 2011 Mitochondrial DNA Testing 8. 2011 DNA Testing & Results 9. 10. Introduction To The Starchild Skull: The Starchild Skull is a 900-year-old human-like bone skull with distinctly non-human characteristics. By 2003, the Starchild Project had completed enough research to strongly suspect the Starchild was something never seen before by science. Formal research was carried out by credentialed experts in the USA, Canada, and UK. Realizing the ultimate answer could come only from genetic testing, in 2003 the Starchild Project commissioned a DNA analysis of the Starchild Skull’s bone by Trace Genetics of Davis, California. Drs.
Collapse: Why do civilisations fall?
Hundreds of years ago in what is now modern Honduras, Copán was a thriving civilization, a center of the cultural life of the Maya. Tens of thousands of people made their home in the Copán Valley. Yet despite its importance, Copán went into decline. Across the vast territory of the ancient Maya, other important sites were sharing a similar fate. Classic Maya civilization was collapsing. Why did this great civilization fall? can combine with external causes (such as war or natural disaster) to bring about a collapse. Join us as we explore the collapse of four ancient civilizations. Ready to get started? "Collapse" is inspired by programs from Out of the Past, a video series from Annenberg Media.
The Mysterious Moeraki Boulders
If you go down to Koekohe beach in New Zealand you can be sure of a big surprise. In front of you, scattered like enormous marbles from some long abandoned game between giants, are hundreds of giant spherical rocks. Or are they the egg shells of sea-born dragons? Some are isolated but may occur in clusters. Many of the Moeraki boulders give the impression of being completely spherical – and they almost are. They do, however, tend to form early on in the history of the deposited sediment – it is thought they occur before the rest hardens in to rock. What is significant about these concretions is their size. The material responsible for their concretion is a carbonate mineral called calcite. There are large cracks on the boulders and these are known as septaria. The Moeraki boulders date from the Paleocene epoch which translates as the early recent. As you can imagine, there are many Māori legends concerning these hollow boulders.
Livius. Articles on Ancient History
Imgur Roulette
This simple webpage generates a random image from imgur and displays it to you. The image it displays is completely random and as such the vast majority of the images generated will be misses, therefore it might take a few tries to find a hit. However, this method allows you to theoretically see every image on imgur even if it was never linked anywhere. You're an explorer in the dark corners of imgur's attic. Imgur previously used 5 characters as an ID to access its images. Instructions: Click New Image to begin Wait for the button to change from "Loading..." back to "New Image" Enjoy your random image! Disclaimer: This site does not host any of the images, they are all from imgur. ID: NoneUse 7 charactersCancel...
Map Collections
The Library of Congress Search by Keyword | Browse by Geographic Location Index | Subject Index | Creator Index | Title Index The Geography and Map Division of the Library of Congress holds more than 4.5 million items, of which Map Collections represents only a small fraction, those that have been converted to digital form. The focus of Map Collections is Americana and Cartographic Treasures of the Library of Congress. These images were created from maps and atlases and, in general, are restricted to items that are not covered by copyright protection. Map Collections is organized according to seven major categories. Searching Map Collections The mission of the Library of Congress is to make its resources available and useful to Congress and the American people and to sustain and preserve a universal collection of knowledge and creativity for future generations. The Library of Congress presents these documents as part of the record of the past. Special Presentations: Places in History
Rainbow Eucalyptus
These trees may look like they've been painted, but their bark produces all natural colors making them one of the most amazing trees in the world. Rainbow eucalyptus are mostly in New Guinea, New Britain and Sulawesi.
Web Chronology Project
WebChron: The WebChronology Project began as an experiment in history pedagogy by the History Department at North Park University. As a result of changes in the department, WebChron has been removed from the University's server and is now administrated by David Koeller, the originator of the project, and has become part of his "Then Again. . . " website. The site consists of a series of hyperlinked chronologies developed by the instructors and historical articles prepared by students intended for use in history classes.
How Many of Me
Handy Man - Tools - Early Humans for Kids
Early man did not have sharp claws or strong sharp teeth. He was not larger or stronger than other animals. He could not run like deer or antelope. So how did early man survive? He had to use the things that animals did not have, reason and invention. Early man invented and created stone and bone weapons and tools. The Stone Age is considered to have begun about two million years ago, and ended sometime after the end of the last ice age about ten thousand years ago. During the Stone Age, Homo Habilis appeared. Some scientists believe that Homo Habilis did not know how to start a fire. Campfires were very useful to Homo Habilis since fire keeps most animals away, so a campfire would be watched carefully to keep it going.
