Meet the scientific accident that could change the world Well, going by the video it appears to be have comparable energy density to similarly sized but expensive rechargeable watch batteries. The key breakthroughs are, I think: 1) How fast it is to charge it. It normally takes several tens of minutes, to several hours to even a few days to properly a charge any lithium ion battery. This supercapacitor can be charged in seconds to only a few minutes. 2) It's made of graphene. 3) It's cheaply made by a simple process. Basically if this discover can scale to in arbitrarily large banks of stacked supercapacitors, the operation and use of a huge range of electronic and electrical devices will change enormously. Laptops that can be hold several hours worth of work energy and yet only charged in less than a minute. Since electricity and batteries are so fundamental to modern life there is very little this discovery won't touch in the decades to come. The energy density is on par with nickel metal hydride batteries.
Alexander Graham Bell Alexander Graham Bell (March 3, 1847 – August 2, 1922) was an eminent Scottish-born scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone.[N 3] Bell's father, grandfather, and brother had all been associated with work on elocution and speech, and both his mother and wife were deaf, profoundly influencing Bell's life's work. His research on hearing and speech further led him to experiment with hearing devices which eventually culminated in Bell being awarded the first U.S. patent for the telephone in 1876.[N 4] Bell considered his most famous invention an intrusion on his real work as a scientist and refused to have a telephone in his study.[N 5] Many other inventions marked Bell's later life, including groundbreaking work in optical telecommunications, hydrofoils and aeronautics. In 1888, Bell became one of the founding members of the National Geographic Society. Early life First invention Education First experiments with sound
An A to Z of Noah Webster's Finest Forgotten Words | Paul Anthony Jones October 16 is World Dictionary Day, marking the birthday of the great American lexicographer Noah Webster. Born in Connecticut in 1758, Webster published his first dictionary, A Compendious Dictionary of the English Language, in 1806, but it was his two-volume American Dictionary of the English Language published in 1828 (when he was 70 years old) that earned him his place in history as the foremost lexicographer of American English. The statistics alone speak for themselves: Webster's American Dictionary took him 28 years to complete. In preparation he learned 26 languages, including Old English, Ancient Greek, Latin, and Sanskrit. Despite all of his efforts, Webster's dictionary sold just 2,500 copies on its publication and he was compelled to mortgage his home in New Haven to fund a second edition in 1840. AFTER-WISE (adj.) BABBLEMENT (n.) DAGGLE-TAIL (adj.) EAR-ERECTING (adj.) FOPDOODLE (n.) GASTRILOQUIST (n.) HUGGER-MUGGER (n.) ILLAQUEATION (n.) JACKPUDDING (n.) KISSING-CRUST (n.)
El Spiricom, ¿la máquina para hablar con los muertos? | Mundo Parapsicológico En el año 1857, Allan Kardec publicó un libro llamado “El libro de los espíritus” dando comienzo asi a lo que conocemos a dia de hoy como espiritismo. Desde los albores de la humanidad, el hombre deseoso de contactar con las personas que un día dejaron la existencia terrenal, ha asegurado recibir mensajes desde ese otro lado, mediante sueños, apariciones, o través de personas psíquicamente diferentes al resto de mortales, a las cuales conocemos con el nombre de médium. La muerte es un camino que todos debemos recorrer, sin embargo, el hombre por naturaleza se resiste, negándose a aceptarla como el final de su existencia. Desde los tiempos más antiguos el ser humano ha intentado comunicarse mediante arcaicos rituales con lo que actualmente conocemos como “Más Allá”, llegando esta técnica a evolucionar junto al hombre hasta alcanzar su punto más álgido dentro de la sociedad en el siglo XIX, denominando a ésta comunicación “espiritismo”. El Dr. Conversación 1: Conversación 2: Conversación 3:
750 things Mr. Welch can no longer do in a RPG From RPGnetWiki (More than) is a list of actions PCs (personified as "Mr. Welch") should never take in a role-playing game. While many of the entries are based on actual games, other entries are entirely fictional. Inspired by " Skippy's List: The 213 things Skippy is no longer allowed to do in the U.S. Cannot base characters off The Who's drummer Keith Moon. A one-man band is not an appropriate bard instrument. There is no Gnomish god of heavy artillery. My 7th Sea character Boudreaux is not 'Southern' Montaigne. Not allowed to blow all my skill points on 1-pt professional skills. Synchronized panicking is not a proper battle plan. Not allowed to use psychic powers to do the dishes. 'How to Serve Dragons' is not a cookbook. My monk's lips must be in sync. Just because my character and I can speak German, doesn't mean the GM can. Not allowed to berserk for the hell of it, especially during royal masquerades. Must learn at least one offensive or defensive spell if I'm the sorcerer. My 3rd ed. Mr.
Photophone This article is about Alexander Graham Bell and Sumner Tainter's optical phone. For the sound-on-film technology, see RCA Photophone. A historical plaque on the side of the Franklin School in Washington, D.C. which marks one of the points from which the photophone was demonstrated A diagram from one of Bell's 1880 papers Bell believed the photophone was his most important invention. The photophone was a precursor to the fiber-optic communication systems which achieved worldwide popular usage starting in the 1980s. The master patent for the photophone (U.S. Design A photophone receiver and headset, one half of Bell and Tainter's optical telecommunication system of 1880 The photophone was similar to a contemporary telephone, except that it used modulated light as a means of wireless transmission while the telephone relied on modulated electricity carried over a conductive wire circuit. Bell's own description of the light modulator: Reception and adoption See also
The 100 Most Important Things To Know About Your Character (revised) Quote from original Author(Beth):This list came about when, one day while struggling to develop a character for an upcoming Hunter game, my lovely roommate Nikki looked at me and said something like, "Wouldn't it be cool to have a list of questions you could go through and answer while you were making characters, so you'd make sure to consider all sorts of different elements in their personality?" I agreed, and that very evening we sat down over hot chocolate and ramen noodles to whip up a list of 100 appearance-, history-, and personality-related questions (which seemed like a nice even number) to answer as a relatively easy yet still in-depth character building exercise. Later on, we went through the list again, took out the questions that sucked (because there were a lot of them) and replaced them with better ones. In the more recent past, we've also found that answering those annoying online personality quizzes in-character can sometimes lead to interesting revelations. - Beth
Laser safety Laser safety is safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations. Moderate and high-power lasers are potentially hazardous because they can burn the retina of the eye, or even the skin. To control the risk of injury, various specifications, for example ANSI Z136 in the US and IEC 60825 internationally, define "classes" of laser depending on their power and wavelength. These regulations also prescribe required safety measures, such as labeling lasers with specific warnings, and wearing laser safety goggles when operating lasers. Laser radiation hazards Thermal effects are the predominant cause of laser radiation injury. Damage mechanisms Typical US (ANSI) laser warning label. The eye focuses visible and near-infrared light onto the retina.
s Citadel: 5 Room Dungeon By JohnnFour Why Do I Like 5 Room Dungeons? This format, or creation method, has a number of advantages: Any location. Though I call them 5 Room Dungeons, they actually apply to any location with five or so areas. They dont have to be fantasy or dungeons. Room One: Entrance And Guardian There needs to be a reason why your dungeon hasnt been plundered before or why the PCs are the heroes for the job. Room One challenge ideas:The entrance is trapped. Room One is also your opportunity to establish mood and theme to your dungeon, so dress it up with care. Room Two: Puzzle Or Roleplaying Challenge The PCs are victorious over the challenge of the first room and are now presented with a trial that cannot be solved with steel. Make Room Two a puzzle, skill-based, or roleplaying encounter, if possible. Note, if Room One was this type of encounter, then feel free to make Room Two combat-oriented. Room Two should allow for multiple solutions to prevent the game from stalling. Room Three: Trick or Setback Background
Automotive lighting The lighting system of a motor vehicle consists of lighting and signalling devices mounted or integrated to various parts of a motor vehicle. These may include the front, sides, rear and, in some cases, the top of the vehicle. The purpose of this system is to provide illumination for the driver. History Early road vehicles used fueled lamps, before the availability of electric lighting. Colour of light emitted The colour of light emitted by vehicle lights is largely standardised by longstanding convention. Forward illumination Forward illumination is provided by high- ("main", "full", "driving") and low- ("dip", "dipped", "passing") beam headlamps, which may be augmented by auxiliary fog lamps, driving lamps, or cornering lamps. Headlamps Dipped beam (low beam, passing beam, meeting beam) ISO symbol for low beam Main beam (high beam, driving beam, full beam) ISO symbol for high beam Auxiliary lamps Driving lamps Front fog lamps Rear
The Red Book of Westmarch According to J.R.R. Tolkien's lore, the entire tale of The Hobbit and The Lord of the Rings was translated from a collection of journals entitled the Red Book of Westmarch. Originally written by Bilbo Baggins and expanded by his nephew Frodo, the Red Book then passed into the hands of Samwise Gamgee who finally entrusted it to his eldest daughter Eleanor. Replicated here as the original volume begun by Bilbo and continued by Frodo, this leather bound book is divided into several sections: The Hobbit (or There And Back Again) is written in Bilbo's own hand, who continues with some notes from the Libraries of Rivendell. Measuring about 8 1/2" x 12" (22 x 30cm), this prop replica is bound in genuine red cowhide, embossed with elvish designs and silver foiled with a star and Bilbo's "BB" monogram.
Ubiquitous computing Ubiquitous computing (ubicomp) is a concept in software engineering and computer science where computing is made to appear everywhere and anywhere. In contrast to desktop computing, ubiquitous computing can occur using any device, in any location, and in any format. A user interacts with the computer, which can exist in many different forms, including laptop computers, tablets and terminals in everyday objects such as a fridge or a pair of glasses. The underlying technologies to support ubiquitous computing include Internet, advanced middleware, operating system, mobile code, sensors, microprocessors, new I/O and user interfaces, networks, mobile protocols, location and positioning and new materials. This new paradigm is also described as pervasive computing, ambient intelligence, ambient media or 'everyware'. Each term emphasizes slightly different aspects. Core concepts Dust: miniaturized devices can be without visual output displays, e.g. Layer 1: task management layer