|
Self-balancing Unicycle
An electric unicycle (often initialized as EUC or acronymized yuke or Uni) is a self-balancing personal transporter with a unicycle, single wheel. The rider controls speed by leaning forwards or backwards, and steers by twisting or tilting the unit side to side. The self-balancing mechanism uses accelerometers and gyroscopes. Most manufacturers of EUCs are based out of China, including Segway, Inmotion, Kingsong, Begode, and Leaperkim. Operation Similar to Self-balancing scooter, hoverboards, Onewheels, and Segways, electric unicycles are self-balancing in a forward and backward direction, with side-to-side (lateral) stability being provided by human steering motions that tilt or twist the unit, similar to Bicycle and motorcycle dynamics. The control of a unicycle can be considered to be similar to an inverted pendulum. Many electric unicycles have suspension, either operated by air or springs. Electric unicycles come in varying speeds, battery capacities, and motor wattages. L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Without Cars 2015 Unicycles
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of cities in the European Union by population within city limits, fourth-most populous city in the European Union and the List of cities proper by population density, 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, Fashion capital, fashion, and gastronomy. Because of its leading role in the French art, arts and Science and technology in France, sciences and its early adoption of extensive street lighting, Paris became known as the City of Light in the 19th century. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an official estimated population of 12,271,794 inhabitants in January 2023, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omni Wheel
Omni wheels or poly wheels, similar to Mecanum wheels, are wheels with small discs (called rollers) around the circumference which are perpendicular to the turning direction. The effect is that the wheel can be driven with full force, but will also slide laterally with great ease. These wheels are often employed in holonomic drive systems. A platform employing three omni wheels in a triangular configuration is generally called Kiwi Drive. The Killough platform is similar; so named after Stephen Killough's work with omnidirectional platforms at Oak Ridge National Laboratory. Killough's 1994 design used pairs of wheels mounted in cages at right angles to each other and thereby achieved holonomic movement without using true omni wheels. They are often used in intelligent robot research for small autonomous robots. In projects such as VEX Robotics, Robocup and FIRST Robotics, many robots use these wheels to have the ability to move in all directions. Omni wheels are also som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda U3-X
The Honda U3-X is an experimental self-balancing one-wheeled personal transporter shown in 2009. History It was unveiled by Honda's CEO on September 24, 2009, and it was announced that it would be shown at the 2009 Tokyo Motor Show. ''Time'' magazine called it one of the 50 best inventions of 2009. In April 2010, Honda engineers did a short demonstration of two of the devices in Times Square, New York City. In May 2010, Honda representatives demonstrated the U3-X at the Honda Collection Hall in Motegi, Tochigi, Japan Honda presented the Honda UNI-CUB, a successor to this device at Osaka Motor Show 2013. Design and operation Honda developed the U3-X with technology originally developed for ASIMO the bipedal human robot project. Honda states that the "U" stands for unicycle and for universal. It weighs and travels at , a similar speed to the Toyota Winglet. Honda U3-X is a compact experimental device that fits comfortably between the rider's legs, to provide free movement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Bicycle
An electric bicycle, e-bike, electrically assisted pedal cycle, or electrically power assisted cycle is a bicycle with an integrated electric motor used to assist propulsion. Many kinds of e-bikes are available worldwide, but they generally fall into two broad categories: bikes that assist the rider's pedal-power (i.e. pedelecs) and bikes that add a throttle, integrating moped-style functionality. Both retain the ability to be Bicycle pedal, pedaled by the rider and are therefore not electric motorcycles. E-bikes use Rechargeable battery, rechargeable batteries and typically are motor-powered up to . High-powered varieties can often travel up to or more than . Depending on local laws, many e-bikes (e.g., ''pedelecs'') are legally classified as bicycles rather than mopeds or motorcycles. This exempts them from the more stringent laws regarding the certification and operation of more powerful two-wheelers which are often classed as electric motorcycles, such as licensing and mand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballbot
A ball balancing robot also known as a ballbot is a dynamically-stable mobile robot designed to balance on a single spherical wheel (''i.e.'', a ball). Through its single contact point with the ground, a ballbot is omnidirectional and thus exceptionally agile, maneuverable and organic in motion compared to other ground vehicles. Its ''dynamic stability'' enables improved navigability in narrow, crowded and dynamic environments. The ballbot works on the same principle as that of an inverted pendulum. History The first successful ballbot was developed in 2005 by Prof. Ralph Hollis of the Robotics Institute at Carnegie Mellon University (CMU), Pittsburgh, USA and it was patented in 2010. The CMU Ballbot is built to be of human size, both in height and footprint. Prof. Hollis and his group at CMU demonstrated that the ballbot can be robust to disturbances including kicks and shoves, and can also handle collisions with furniture and walls. They showed that a variety of interestin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Segway Inc
Segway Inc. is a Chinese owned, formerly American manufacturer of two-wheeled personal transporters, chiefly through its Segway PT and Segway miniPro product lines. Founded by inventor Dean Kamen in 1999, the company's name is a homophone of the word "segue". Segway Inc. was headquartered in the town of Bedford, New Hampshire, United States and primarily marketed its products to various niche markets, including police departments, military bases, warehouses, corporate campuses, and industrial sites. It has held some key patents on designs for self-balancing personal transporters, although some of them have since expired. Since the Chinese company Ninebot acquired it in 2015, Segway has focused on developing a stronger presence in the consumer market with smaller products such as the Segway miniPro. History Origins The first patent by Dean Kamen for a self-balancing transportation device was filed on February 23, 1993, and granted on December 30, 1997, in relation to the iBO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog Science Fiction And Fact
''Analog Science Fiction and Fact'' is an American science fiction magazine published under various titles since 1930. Originally titled ''Astounding Stories of Super-Science'', the first issue was dated January 1930, published by William Clayton (publisher), William Clayton, and edited by Harry Bates (author), Harry Bates. Clayton went bankrupt in 1933 and the magazine was sold to Street & Smith. The new editor was F. Orlin Tremaine, who soon made ''Astounding'' the leading magazine in the nascent pulp science fiction field, publishing well-regarded stories such as Jack Williamson's ''Legion of Space Series, Legion of Space'' and John W. Campbell's Twilight (Campbell short story), "Twilight". At the end of 1937, Campbell took over editorial duties under Tremaine's supervision, and the following year Tremaine was let go, giving Campbell more independence. Over the next few years Campbell published many stories that became classics in the field, including Isaac Asimov's Found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry Harrison (writer)
Harry Max Harrison (born Henry Maxwell Dempsey; March 12, 1925 – August 15, 2012) was an American science fiction author, known mostly for his character The Stainless Steel Rat and for his novel ''Make Room! Make Room!'' (1966). The latter was the rough basis for the motion picture ''Soylent Green'' (1973). Long resident in both Ireland and the United Kingdom, Harrison was involved in the foundation of the Irish Science Fiction Association, and was, with Brian Aldiss, co-president of the Birmingham Science Fiction Group. Aldiss called him "a constant peer and great family friend". His friend Michael Carroll (Irish writer), Michael Carroll said of Harrison's work: "Imagine ''Pirates of the Caribbean'' or ''Raiders of the Lost Ark'', and picture them as science-fiction novels. They're rip-roaring adventures, but they're stories with a lot of heart." Novelist Christopher Priest (novelist), Christopher Priest wrote in an obituary Career Before becoming an editor and writer, H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science Fiction
Science fiction (often shortened to sci-fi or abbreviated SF) is a genre of speculative fiction that deals with imaginative and futuristic concepts. These concepts may include information technology and robotics, biological manipulations, space exploration, time travel, Parallel universes in fiction, parallel universes, and extraterrestrials in fiction, extraterrestrial life. The genre often explores human responses to the consequences of projected or imagined scientific advances. Science fiction is related to fantasy (together abbreviated wikt:SF&F, SF&F), Horror fiction, horror, and superhero fiction, and it contains many #Subgenres, subgenres. The genre's precise Definitions of science fiction, definition has long been disputed among authors, critics, scholars, and readers. Major subgenres include hard science fiction, ''hard'' science fiction, which emphasizes scientific accuracy, and soft science fiction, ''soft'' science fiction, which focuses on social sciences. Other no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Heinlein
Robert Anson Heinlein ( ; July 7, 1907 – May 8, 1988) was an American science fiction author, aeronautical engineer, and naval officer. Sometimes called the "dean of science fiction writers", he was among the first to emphasize scientific accuracy in his fiction, and was thus a pioneer of the subgenre of hard science fiction. His published works, both fiction and non-fiction, express admiration for competence and emphasize the value of critical thinking. His plots often posed provocative situations which challenged conventional social mores. His work continues to have an influence on the science-fiction genre, and on modern culture more generally. Heinlein became one of the first American science-fiction writers to break into mainstream magazines such as ''The Saturday Evening Post'' in the late 1940s. He was one of the best-selling science-fiction novelists for many decades, and he, Isaac Asimov, and Arthur C. Clarke are often considered the "Big Three" of English-language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Roads Must Roll
"The Roads Must Roll" is a 1940 science fiction short story by American writer Robert A. Heinlein. It was selected for ''The Science Fiction Hall of Fame, Volume One, 1929–1964'' anthology in 1970. The story is set in the near future, when "roadtowns" (wide rapidly moving passenger platforms similar to moving sidewalks, but reaching speeds of 100 mph) have replaced highways and railways as the dominant transportation method in the United States. Heinlein's themes are technological change and social cohesion. The fictional social movement he calls "functionalism" (which is unrelated to the real-life sociological theory of the same name), advances the idea that one's status and level of material reward in a society must and should depend on the functions one performs for that society. Plot summary In the first section of the narrative, a stormy meeting takes place at a Sacramento Sector Guild Hall of the technicians working "down inside", among the very noisy great rotors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
