FULGURITES - PRODUCTS OF LIGHTNING FULGURITES Lechatelierite Var. Fulgurite is the varietal name given to fused Quartz, Si02, which has been fused by the action of lightning striking the Earth and locally melting the sand. The best known Fulgurites are found in Quartz sands, where the Fulgurites take the form of tubes, sometimes exceeding a half inch or more in diameter. This type of formation is called a Sand Fulgurite. As the lightning strikes the Earth and courses downward through the sand, the sand is instantly super heated (i.e., melted and fused). After cooling, glass-like hollow tubes (Fulgurites) can sometimes be located beneath the surface of the sand, generally decreasing in diameter and sometimes branching as they descend, sometimes extending for several feet.
Yes, You Can Brainstorm Without Groupthink - Vijay Govindarajan and Jay Terwilliger by Vijay Govindarajan and Jay Terwilliger | 6:00 AM July 25, 2012 In articles in both the New York Times and The New Yorker earlier this year, the concept of brainstorming as introduced in the 1940′s by Alex Osborn has been attacked as ineffective and linked to the concept of “Groupthink.” In her NYT piece and in an HBR ideacast, Susan Cain points out that the popular view — “Lone geniuses are out. Collaboration is in.” — conflicts with research that suggests “people are more creative when they enjoy privacy and freedom from interruption.” Some of the most spectacularly creative people in many fields are often introverts who are more comfortable working alone. And in his New Yorker article, Jonah Lehrer cites research indicating, “Brainstorming didn’t unleash the potential of the group, but rather made each individual less creative.”
Why Nikola Tesla was the greatest geek who ever lived Additional notes from the author: If you want to learn more about Tesla, I highly recommend reading Tesla: Man Out of Time Also, this Badass of the week by Ben Thompson is what originally inspired me to write a comic about Tesla. Ben's also got a book out which is packed full of awesome. There's an old movie from the 80s on Netflix Instant Queue right now about Tesla: The Secret of Nikola Tesla. It's corny and full of bad acting, but it paints a fairly accurate depiction of his life. The drunk history of Tesla is quite awesome, too. History.com has a great article about Edison and how his douchebaggery had a chokehold on American cinema.
Watercolor set of wreath and laurels ~ Illustrations on Creative Market Watercolor set of laurel, wreath and leaves clip art were hand drawn for your personal design. It's perfect for making invitations, postcards, wedding or birthday cards, save the date cards, shower cards, party decorations, banners, labels, stickers, scrap-booking and for other things! You can use it also as logo elements or blog headers. Watercolor hand drawn style will give personal beauty for your individual design and draw a lot attention to it! This set includes 8 separate transparent high-resolution digital .png, 300dpi as on preview (.jpg preview also included).
The Future of Leap Seconds Leap seconds are added to our clocks to compensate for the Earth's slowing rotation. However, some scientists propose abolishing leap seconds in the future, redefining the way we measure time. This issue will be put to a vote in 2015. Open Course: Social Media & Open Education I will be facilitating an open graduate course this Fall titled EC&I 831: Social Media & Open Education. This will be the 5th time I have taught the course (first time was 2007), and it’s different each time. It looks like I will have about 25 graduate students taking this for credit (which is well over the usual limit), and I’m also inviting anyone out there interested in the experience to participate for free. If you would like to learn more about the course, go to If you’re familiar with the course (from past iterations), you’ll notice that I’ve abandoned the old wiki and moved over to a WordPress site as the ‘central’ space. If you are interested in participating, see the page for non-credit participants.
8 Books For a Higher Existence Books are magical inventions. By carrying meaning, they gives us glimpses of experience and knowledge from a different world. Phonetic language, being cut-off from time and place, the Now, helps both to encapsulate the ego more, but also to offer guidance to make it poriferous, letting Eros free. How OLEDs Work - HowStuffWorks Imagine having a high-definition TV that is 80 inches wide and less than a quarter-inch thick, consumes less power than most TVs on the market today and can be rolled up when you're not using it. What if you could have a "heads up" display in your car? How about a display monitor built into your clothing? These devices may be possible in the near future with the help of a technology called organic light-emitting diodes (OLEDs). OLEDs are solid-state devices composed of thin films of organic molecules that create light with the application of electricity. OLEDs can provide brighter, crisper displays on electronic devices and use less power than conventional light-emitting diodes (LEDs) or liquid crystal displays (LCDs) used today.
The 101 Most Useful Websites on the Internet Here are some of the most useful websites on the internet that you may not know about. These web sites, well most of them, solve at least one problem really well and they all have simple web addresses (URLs) that you can memorize thus saving you a trip to Google. And if you find this list useful, also check out the expanded version – The Most Useful Websites – which now offers a collection of 150+ undiscovered and incredibly useful websites to enhance your productivity. ctrlq.org/screenshots – for capturing screenshots of web pages on mobile and desktops. dictation.io – online voice recognition in the browser itself. Changelog and Updates The following websites were part of the original list but they are either no longer available or have been replaced with better alternatives.
Science and Technology of WWII Science, Technology, and Warfare through the Ages On the face of it, few human activities would seem to be more different than war and science. War aims to kill people and destroy things, to bring one country’s military (or their whole society) under the control of another. War is primal, violent, chaotic. Science and mathematics, by contrast, seem the highest development of learning and civilization, creative and even noble activities. Science proceeds by slow, thoughtful activity, careful theory and experiment where every last detail or variable is controlled under precise conditions.
learning, networks, knowledge, technology, community The Learning Analytics and Knowledge conference (LAK16) is happening this week in Edinburgh. I unfortunately, due to existing travel and other commitments, am not in attendance. I have great hope for the learning analytics field as one that will provide significant research for learning and help us move past naive quantitative and qualitative assessments of research and knowledge. I see LA as a bricolage of skills, techniques, and academic/practitioner domains. It is a multi-faceted approach of learning exploration and one where anyone with a stake in the future of learning can find an amenable conversation and place to research. Since I am missing LAK16, and feeling nostalgic, I want to share my reflections of how LAK and the Society for Learning Analytics Research (SoLAR) became the influential agencies that they now are in learning research.
Media Blacks Out New Snowden Interview The Government Doesn’t Want You to See This past Sunday evening former NSA contractor Edward Snowden sat down for an interview with German television network ARD. The interview has been intentionally blocked from the US public, with virtually no major broadcast news outlets covering this story. In addition, the video has been taken down almost immediately every time it’s posted on YouTube. In contrast, this was treated as a major political event in both print and broadcast media, in Germany, and across much of the world. UDO MAG Photography by Iwan Baan, © Vitra Photography by Iwan Baan, © Vitra Located on the Vitra Campus in Weil am Rhein, this park features a brilliantly constructed work of architecture entitled the “VitraHaus” that was developed after a large fire in the 1950s destroyed most of the site’s existing factory buildings.