Plasma globe A plasma globe with filaments extending from the inner sphere to the outer. Description The effect of a conducting object (such as a hand) in close proximity with the plasma globe glass Some globes have a control knob that varies the amount of power going to the center electrode. At the very lowest setting that will light or "strike" the globe, a single tendril is made. Placing a finger tip on the glass creates an attractive spot for the energy to flow, because the conductive human body (having non-ohmic resistance of about 1000 ohms at room temperature) is more easily polarized than the dielectric material around the electrode (i.e. the gas within the globe) providing an alternative discharge path having less resistance. Much of the movement of the filaments is due to heating of the gas around the filament. An electric current is produced within any conductive object near the orb. The globe is prepared by pumping out as much air as is practical. History Video of plasma globe
Build a 15,000 rpm Tesla Turbine using hard drive platters Here's a project that uses some of those dead hard drives you've got lying around. In the Tesla Turbine, air, steam, oil, or any other fluid is injected at the edge of a series of smooth parallel disks. The fluid spirals inwards and is exhausted through ventilation ports near the center of the disks. A regular blade turbine operates by transferring kinetic energy from the moving fluid to the turbine fan blades. In the Tesla Turbine, the kinetic energy transfer to the edges of the thin platters is very small. Instead, it uses the boundary layer effect, i.e. adhesion between the moving fluid and the rigid disk. To build a turbine like this, you need some dead hard drives, some stock material (aluminum, acrylic), a milling machine with a rotary table, and a lathe with a 4 jaw chuck. Wikipedia has a good review article ( as well as articles about I run my turbine on compressed air (40 psi), and it easily reaches speeds of 10-15,000 rpm.
Wireless energy transfer The most common form of wireless power transmission is carried out using direct induction followed by resonant magnetic induction. Other methods under consideration are electromagnetic radiation in the form of microwaves or lasers and electrical conduction through natural media. Electric energy transfer An electric current flowing through a conductor, such as a wire, carries electrical energy. When an electric current passes through a circuit there is an electric field in the dielectric surrounding the conductor; magnetic field lines around the conductor and lines of electric force radially about the conductor. In a direct current circuit, if the current is continuous, the fields are constant; there is a condition of stress in the space surrounding the conductor, which represents stored electric and magnetic energy, just as a compressed spring or a moving mass represents stored energy. Electromagnetic induction Electrodynamic induction method
Tesla turbines for highschool students Here are some photos of some Tesla Turbines my Highschool Engineering students created as part of their studies into mechanisms and power transfer. Their brief was to investigate experimental power generation systems and create a prototype using available materials. I have provided the Task Overview below. Once the turbines where complete we tested their RPM and efficiency using a car timing light, changed and improved parts such as bearings etc and retested to see improvements in efficiency. Task Overview (scenario) Global - Tech Engineering are a socially conscious Engineering firm. The system must have the following considerations: high efficiency. made from available, cost efficient materials (preferably recycled or low impact materials). environmentally sound (no harmful by-products or toxic materials). small – scale or easily disassembled. be able to be mass produced in a standard workshop.
Tesla electric car The Tesla electric car anecdote refers to a supposed Tesla invention described by a Peter Savo (who claimed to be a nephew of Tesla), to one Derek Ahers with the date September 16, 1967. Savo said that Tesla took him to Buffalo, New York in 1931 and showed him a modified Pierce-Arrow automobile. This story has received some debate for the fact that the car's propulsion system is said to have been invented by Tesla. A number of web pages exist that serve to perpetuate the tale. References Jump up ^ Robert Nelson. Further reading External links Interesting Facts About Nikola Tesla Student invention lets Guatemalans pump water on the go University of Sheffield student Jon Leary was required to “make something useful out of rubbish” as part of his dissertation. What he ended up doing was transforming lives. As part of his studies as a Mechanical Engineering major, Leary spent four months in Guatemala. There, he introduced the locals to his bicibomba movil, a mobile bicycle-powered water pump. View all Leary developed the system while still in the UK. “The inspiration came from regular pannier racks that are used on touring bikes to carry things over the back wheel of a bike” Leary told us. The bicibomba movil was introduced with the help of Maya Pedal, a local organization that champions pedal-powered technology in the region. The mobile aspect of Leary’s invention, however, makes it attractive to farmers. Jon’s device can reportedly be made quite easily, using standard tools along with old bikes, bits of metal, and scrapped electric centrifugal water pumps.
Tesla's Egg of Columbus World's Fair: Columbian Exposition Tesla presentation, 1893 Nikola Tesla, at the 1893 World's Columbian Exposition, demonstrated a device he constructed known as the "Egg of Columbus." It was used to demonstrate and explain the principles of the rotating magnetic field model and the induction motor. Tesla's device used a toroidal iron core stator on which four electromagnetic coils were wound. References External links What Did Nikola Tesla Invent?
Build an Amazing Tesla CD Turbine Build a real working turbine from recycled CD's! This Tesla CD Turbine is based on the Tesla turbine, which was invented by Nikola Tesla in the early 1900's. Tesla's pumps and motors were unique in that they only used discs, and took advantage of the boundary layer effect. His smallest designs were over 100 horsepower. This Instructable is an introduction to my recently developed Tesla CD Turbine, which is made from CD's, CD spindle, pipe fittings and glue. The basic model Tesla CD Turbine shows how the boundary layer idea works to deliver power. The advanced model has many cool features, such as the use of neodymium magnets to separate the CD's with the correct gap and a Magnetic Coupler to attach implements, and much more. My next CD Turbine Instructable shows how to make a Magnetic Disc Pack and Magnetic Coupler for more advanced CD Turbine experimentation. However, please be forewarned that this turbine on air pressure is not really a kid's toy or particularly safe to operate.
Tesla's oscillator Tesla's electro-mechanical oscillator is a steam-powered electric generator patented by Nikola Tesla in 1893. Later in life Tesla claimed one version of the oscillator caused an earthquake in New York City in 1898, gaining it the popular culture title "Tesla's earthquake machine". Description Tesla's oscillator is a reciprocating electricity generator. Steam would be forced into the oscillator, and exit through a series of ports, pushing a piston up and down that was attached to an armature, causing it to vibrate up and down at high speed, producing electricity. Tesla developed many versions of the oscillator and looked on it as a possible replacement for inefficient reciprocating steam engines used to turn generators, but it was superseded by the development of highly efficient steam turbines. "Earthquake" claims MythBusters References and notes Citations Notes See also
Tesla coil A Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity. Tesla coils can produce higher voltages than electrostatic machines, which are another source of artificial high-voltage discharges. Tesla experimented with a number of different configurations consisting of two, or sometimes three, coupled resonant electric circuits. Tesla used these coils to conduct innovative experiments in electrical lighting, phosphorescence, X-ray generation, high frequency alternating current phenomena, electrotherapy, and the transmission of electrical energy without wires. Theory A Tesla coil transformer operates in a significantly different fashion from a conventional (i.e., iron core) transformer. History The later and higher-power coil design has a single-layer primary and secondary. 1902 design
Teslascope A Teslascope is a radio transceiver that was alleged to have been invented by Nikola Tesla for the purpose of communicating with life on other planets. Even though Tesla talked about interplanetary communications on many occasions, it has never been confirmed that he built this particular device. It is sometimes associated with the 'paranormal' Hyperdimensional Oscillator. Claims The claim that Tesla created a device called a “Teslascope” grew out of Arthur H. Matthews' 1970 book, "The Wall of Light: Nikola Tesla and the Venusian space ship, the X-12" (OCLC 2094500). Matthews, who had apprenticed under Tesla at the turn of 20th the century and worked for him until Tesla's death in 1943, wrote that Tesla had designed it in order to communicate with extraterrestrial beings. Matthews made other more extravagant claims, such as Tesla having been born on Venus. Talking with the planets In 1901 Tesla said the following about his 1899 Colorado experiment: Notes
Tesla (unit) (The 6th equivalent is in SI base units). Units used: A = ampere C = coulomb kg = kilogram m = meter s = second T = tesla V = volt J = joule In the production of the Lorentz force, the difference between these types of field is that a force from a magnetic field on a charged particle is generally due to the charged particle's movement while the force imparted by an electric field on a charged particle is not due to the charged particle's movement. In ferromagnets, the movement creating the magnetic field is the electron spin (and to a lesser extent electron orbital angular momentum). 1 tesla is equivalent to: 1,000,000,000 (or 109) γ (gammas), used in geophysics. 42.6 MHz of the 1H nucleus frequency, in NMR. For those concerned with low-frequency electromagnetic radiation in the home, the following conversions are needed most: 1000 nT (nanoteslas) = 1 µT (microtesla) = 10 mG (milligauss) 1,000,000 µT = 1 T Gauss<->Tesla Conversion Tool
Nikola Tesla: The Genius Who Lit the World This is the documentary film about Nikola Tesla, the scientist and inventor, one of the greatest men in history. Nikola Tesla was born on July 10,1856 in Smiljan, Lika in what later became Yugoslavia. His father, Milutin Tesla was a Serbian orthodox priest and his mother Djuka Mandic was an inventor in her own right of household appliances. Tesla studied at the Polytechnic Institute in Graz, Austria and the University of Prague. He began his career as an electrical engineer with a telephone company in Budapest in 1881. Before going to America, Tesla joined Continental Edison Company in Paris where he designed dynamos. Young Nikola Tesla came to the United States in 1884. Direct current flows continuously in one direction; alternating current changes direction 50 or 60 times per second, and can be stepped up to very high voltage levels, minimizing power loss across great distances. Tesla's A-C induction motor is widely used throughout the world in industry and household appliances.