Dan Phillips: Creative houses from reclaimed stuff. Flamethrower Versus Fire Extinguisher at 1000 Frames per Second. Amazing Fox Snow Dive - Yellowstone - BBC Two. Science. Science does not know its debt to imagination. How To Make Glow-In-The-Dark Mountain Dew. Make Your Glow Stick SUPER BRIGHT!!! Nitroglycerin And Nitrogen Triiodide. Potassium Chlorate and Gummy Bear. High Quality Photos of the USS Independence LCS-2 new ship for the Navy theBRIGADE. This is the USS Independence (LCS 2).
It was built at the Austal shipyard in Mobile, Alabama. These are photos the USS Independence's test trials for final inspection by the Navy. Good job Tide. 4 years of college and one photoshop class. But seriously, way to go Bama…Roll Tide. Source theBRIGADE wants to show off your pictures from service Submit your Photos here. Earth View. Earth View. Click in image to pan or here to zoom in or out.
Satellite data provided by The Living Earth® Inc. /Earth Imaging© 1996, All Rights Reserved. For close-ups, you may wish to select the NASA Visible Earth image for improved detail. The Mariana Trench Shown To Unsettling Scale. Bns. Technology/future science. Robotics. Critical & Creative Education. Physics. 'Invisibility cloak' hides objects without using metamaterials.
The quest to build a working “invisibility cloak” generally focuses on the use of metamaterials – artificially engineered materials with a negative refractive index that have already been used to render microscopic objects invisible in specific wavelengths of light.
Now, using naturally occurring crystals rather than metamaterials, two research teams working independently have demonstrated technology that can cloak larger objects in the broad range of wavelengths visible to the human eye. Both teams, one from the Singapore-MIT Alliance for Research and Technology (SMART Centre) and the other comprised of researchers from the University of Birmingham, Imperial College, London and Technical University of Denmark, made the breakthrough using a natural crystal called calcite. This transparent mineral boasts an optical property known as birefringence, or double-refraction. Meanwhile, the SMART Centre team used a similar method. Fulgurite. Fulgurite Fulgurites (from the Latin fulgur, meaning "thunderbolt") are a variety of the mineraloid lechatelierite.
Sometimes referred to as petrified lightning, they are natural hollow glass tubes formed by lightning strikes in quartzose sand, silica, or soil.[1] Description[edit] Fulgurites are formed when lightning with a temperature of at least 1,800 °C (3,270 °F) instantaneously melts silica on a conductive surface and fuses grains together; the fulgurite tube is the cooled product.[2] This process occurs over a timespan of around one second,[3] and leaves evidence of the lightning path and its dispersion over the surface or into the earth, [4] Fulgurites can also be produced when the cables of a high voltage electrical distribution network break, and the lines fall onto a conductive surface beneath in the presence of loose sand. The color varies depending on the composition of the sand they formed in, ranging from black or tan, to green or a translucent white. Uses[edit] The Size Of Our World.
Resizenowmap.jpg (JPEG Image, 715x514 pixels) The Size Of Our World. UnitsConverter.net - Convert Common Engineering Units in One Click.