How to Navigate by the Stars

Constrictor knot History[edit] First called "constrictor knot" in Clifford Ashley's 1944 work The Ashley Book of Knots, this knot likely dates back much further.[5] Although Ashley seemed to imply that he had invented the constrictor knot over 25 years before publishing The Ashley Book of Knots,[1] research indicates that he was not its originator.[6] Ashley's publication of the knot did bring it to wider attention.[7] Although the description is not entirely without ambiguity, the constrictor knot is thought to have appeared under the name "gunner's knot" in the 1866 work The Book of Knots,[8][9] written under the pseudonym Tom Bowling.[10] in relation to the clove hitch, which he illustrated and called the "builder's knot". Tying[edit] The method shown below is the most basic way to tie the knot. Variations[edit] Double constrictor knot[edit] If a stronger and even more secure knot is required an extra riding turn can be added to the basic knot to form a double constrictor knot. Usage[edit] Releasing[edit]

10 Scientific Laws and Theories You Really Should Know" The British physicist and novelist C.P. Snow once said that a nonscientist who didn't know the second law of thermodynamics was like a scientist who had never read Shakespeare [source: Lambert]. Snow's now-famous statement was meant to emphasize both the importance of thermodynamics and the necessity for nonscientists to learn about it. Thermodynamics is the study of how energy works in a system, whether it's an engine or the Earth's core. You can't win.You can't break even.You can't quit the game. Let's unpack these a bit. The second statement -- you can't break even -- means that due to ever-increasing entropy, you can't return to the same energy state. Finally, the third law -- you can't quit the game -- refers to absolute zero, the lowest theoretical temperature possible, measured at zero Kelvin or (minus 273.15 degrees Celsius and minus 459.67 degrees Fahrenheit).

52 Plants In The Wild You Can Eat: Edible Greenry Written by Suntactics We all know our vegetables and fruits are safe to eat, but what about other wild edibles? Here are a few common North American goodies that are safe to eat if you find yourself stuck in the wild. For the serious conoisseur, if you get to the end on page 6, there's a great informational documentary video on 100 edible plants: Blackberries: Many wild berries are not safe to eat, it’s best to stay away from them. Dandelions: The easiest to recognize is the dandelion, in the spring they show their bright yellow buds. Asparagus: The vegetable that makes your pee smell funny grows in the wild in most of Europe and parts of North Africa, West Asia, and North America. Elderberries: An elderberry shrub can grow easily grow about 10 feet and yield tons of food, their leaf structure is usually 7 main leaves on a long stretched out stem, the leaves are long and round and the leaves themselves have jagged edges. Gooseberries: Mulberries: Pine: Kudzu:

11 ways you are thoroughly (but interestingly) wrong The folks at Your Logical Fallacy Is have compiled a list of 24 common ways that you and I are often mistaken in the way we think. I have to say that looking through their site is perhaps the most fun I’ve ever had being told how wrong I am. And not just wrong in a certain instance, but consistently and fundamentally flawed in the very way I think. Fun, right? Included at the site is a free, very high-res poster for those of you who may have a reason to hang these as a reminder on the wall. (via MetaFilter) Emotional Freedom Technique (EFT) for Headaches

Continuous Chest Compression CPR—University of Arizona Sarver Heart Center The Technological Singularity If Everyone Knew | Now with five more facts that everyone should know.