Solubility Rules -- from Eric Weisstein's World of Chemistry
Juan Enriquez shares mindboggling science
Scale of Universe - Interactive Scale of the Universe Tool
10 Creepy Plants That Shouldn't Exist We spend a lot of time here at Cracked pointing out horrors of nature that slither on the land and lurch through the sea. But staying under the radar in nature's landscape of nightmares is the twisted carnival of things that grow out of the ground. Like ... Bleeding Tooth Fungus The bleeding tooth fungus looks kind of like a wad of chewing gum that leaks blood like a rejected prop from The Shining.
8 Things Everybody Ought to Know About Concentrating “Music helps me concentrate,” Mike said to me glancing briefly over his shoulder. Mike was in his room writing a paper for his U.S. History class.
The "ugly red wooden box" sounds correct, but the "wooden red ugly box" sounds wrong. There is a "rule" describing the order English adjectives are used in: Opinion or judgment -- beautiful, ugly, easy, fast, interesting Size -- small, tall, short, big Age -- young, old, new, historic, ancient Shape -- round, square, rectangular Color -- red, black, green, purple Nationality -- French, Asian, American, Canadian, Japanese Material -- wooden, metallic, plastic, glass, paper Purpose or Qualifier -- foldout sofa, fishing boat, racing car SS > factoids > adjective order in English
Researchers Discover the First Known Virus That Preys on Other Viruses | 80beats Viruses infect a wide range of plants and animals, and a new study in Nature [subscription required] shows that they can even infect one another. If that seems surprising, no wonder: until a team of French researchers watched one virus invade another, hijacking its genetic machinery and making copies of its victim’s DNA, scientists didn’t even know this was possible [Wired]. The French team dubbed the virus’s virus Sputnik and called it a “virophage” to parallel “bacteriophage,” which is the name for a virus that infects bacteria [Science]. Sputnik is tiny, with only 18,000 genetic bases in its chromosome. Its victim, by contrast, is a large mamavirus that the scientists found in a Paris cooling tower, and contains about 1.2 million genetic bases.
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Artist concept of Gravity Probe B orbiting the Earth to measure space-time, a four-dimensional description of the universe including height, width, length, and time. Stanford and NASA researchers have confirmed two predictions of Albert Einstein's general theory of relativity, concluding one of the space agency's longest-running projects. Known as Gravity Probe B, the experiment used four ultra-precise gyroscopes housed in a satellite to measure two aspects of Einstein's theory about gravity. The first is the geodetic effect, or the warping of space and time around a gravitational body. The second is frame-dragging, which is the amount a spinning object pulls space and time with it as it rotates. s Gravity Probe B confirms two Einstein theories
List of mathematical symbols When reading the list, it is important to recognize that a mathematical concept is independent of the symbol chosen to represent it. For many of the symbols below, the symbol is usually synonymous with the corresponding concept (ultimately an arbitrary choice made as a result of the cumulative history of mathematics), but in some situations a different convention may be used. For example, depending on context, "≡" may represent congruence or a definition. Further, in mathematical logic, numerical equality is sometimes represented by "≡" instead of "=", with the latter representing equality of well-formed formulas.
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Alkali metals in water, accurate!
6 Easy Steps to Falling Asleep Fast Psychological research over three decades demonstrates the power of Stimulus Control Therapy. Can’t get a good night’s sleep? You’re not alone. In surveys of what would improve people’s lives, a good night’s sleep frequently comes near the top of the list. Poor sleep results in worse cognitive performance, including degraded memory, attention, performance and alertness.
15 houseplants for improving indoor air quality
neurosci : Neuroscience articles, jobs and information
Your Brain in Love Men and women can now thank a dozen brain regions for their romantic fervor. Researchers have revealed the fonts of desire by comparing functional MRI studies of people who indicated they were experiencing passionate love, maternal love or unconditional love. Together, the regions release neurotransmitters and other chemicals in the brain and blood that prompt greater euphoric sensations such as attraction and pleasure.
10 Brilliant Social Psychology Studies Ten of the most influential social psychology studies. “I have been primarily interested in how and why ordinary people do unusual things, things that seem alien to their natures. Why do good people sometimes act evil?
RF Cafe - Mathematical References Throughout the years as an engineer, I have needed to research topics on engineering, physics, chemistry, mechanics, mathematics, etc. The Internet has made the job infinitely simpler, with the caveat that you have to be careful of your sources. Anyone can post anything on the Internet without peer review, and errors are rampant. The topics listed below are primarily ones that I have researched and generated custom pages for the content. I welcome visitor review and comments on my material to help ensure accuracy.
Stephen Wolfram: A New Kind of Science | Online - Table of Contents
WHAT YOU ARE ABOUT TO READ IN THE NEXT PARAGRAPH IS COMMONLY BELIEVED, BUT NOT TRUE – You read by recognizing the shapes of words and groups of words. Words that are in all capital letters all have the same shape: a rectangle of a certain size. This makes words displayed in all uppercase harder to read than upper and lower case (known as “mixed case”). 47 Mind-Blowing Psychology-Proven Facts You Should Know About Yourself
This book is an introduction to the standard methods of proving mathematical theorems. It has been approved by the American Institute of Mathematics' Open Textbook Initiative. Also see the Mathematical Association of America Math DL review (of the 1st edition), and the Amazon reviews. The second edition is identical to the first edition, except some mistakes have been corrected, new exercises have been added, and Chapter 13 has been extended. (The Cantor-Bernstein-Schröeder theorem has been added.) Hammack Home
UCSB scientists discover how the brain encodes memories at a cellular level (Santa Barbara, Calif.) –– Scientists at UC Santa Barbara have made a major discovery in how the brain encodes memories. The finding, published in the December 24 issue of the journal Neuron, could eventually lead to the development of new drugs to aid memory. The team of scientists is the first to uncover a central process in encoding memories that occurs at the level of the synapse, where neurons connect with each other. "When we learn new things, when we store memories, there are a number of things that have to happen," said senior author Kenneth S. Kosik, co-director and Harriman Chair in Neuroscience Research, at UCSB's Neuroscience Research Institute.