Physics and teaching

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Projects » Cohn-zone Here are a few of my projects.. This list is not complete. Project-x Project-x is an 18 foot animatronic pumpkin man for Vermont Haunted forest The Time Cycle The Timecycle was the brainchild of my good friend Homer Wells.. Projects » Cohn-zone
Applications Thermal imaging can be used to document heat/AC leaks from insulation gaps on a building's facade, reveal warmer ground water inflows (either fresh or chemical-laden) or "thermal pollution" from industrial processes entering ocean-temperature waterbodies, as well as identify areas on the human body experiencing infection or stress (includes epidemiological applications). Community applications so far include both a "heat-busters" program in East Harlem and a "forensic" water quality monitoring program in the Gowanus Canal. Approaches There are three prototypes in development: Thermal photography Thermal photography
Calculations - DiracDelta Science & Engineering Encyclopedia Aerodynamics Drag Coefficient A dimensionless value that allows the comparison of shape and orientation of different bodies. Calculations - DiracDelta Science & Engineering Encyclopedia

The electromagnetic waves that compose electromagnetic radiation can be imagined as a self-propagating transverse oscillating wave of electric and magnetic fields. This diagram shows a plane linearly polarized EMR wave propagating from left to right. The electric field is in a vertical plane and the magnetic field in a horizontal plane. The two types of fields in EMR waves are always in phase with each other with a fixed ratio of electric to magnetic field intensity. Electromagnetic radiation (EM radiation or EMR) is a form of radiant energy, propagating through space via electromagnetic waves and/or particles called photons. In a vacuum, it propagates at a characteristic speed, the speed of light, normally in straight lines. Electromagnetic radiation

Electromagnetic radiation

Liquid Crystal Group Hamburg Liquid crystals are an interdisciplinary research area. Chemists are creating new materials and they are using the supramolecular system for synthesis, analysis and purifications of other materials. A special focus nowadays is the template synthesis of nanoscience materials, i.e. MCM-41. Biologist are studing the cell membrane as a liquid crystal with respect to intercellular transport (Endocytose, Exocytose, drug delivery) and communications. Liquid Crystal Group Hamburg
With the general theory of relativity, in which Einstein managed to reconcile relativity and gravitation, he had to discard the traditional physics worldview, which saw space as merely a stage on which the events of the world unfold. Instead, space-time is a dynamic entity, which is distorted by any matter that is contained in it, and which in turn tells that matter how to move and evolve. This interaction between spacetime and matter is described by Einstein's geometric, relativistic theory of gravity. The consequences of that theory are spectacular. General Relativity — Einstein Online General Relativity — Einstein Online
Demoing the SudoGlove at the 2011 Open Hardware Summit What is the SudoGlove? The SudoGlove is a gesture controller that can be easily interfaced with hardware or software via a wireless connection. The glove implements an array of sensors plus filtering circuitry and mathematical analysis firmware to derive state values for each sensor and transmits them to an authorized receiver. I have used the glove to drive an RC car, to synthesize music, to manipulate openGL video, to control arbitrary processing software, and to control performance lighting effects. You can see videos and examples of these interfaces below. SudoGlove Hardware Controller | SudoGlove Hardware Controller |
table of contents table of contents contents toys short but sweetdesk-fan mobilesbi-metallic strip & candle mobile coke-can planimeterkitesclick here to find out about harmonographspendulum escapementsimple drawing instruments balloon buggytoy hovercraftsimple ceiling robotsbubble blowerrobot armdynamic balancestatic electricityhandwriting robotsprinter port robotwalking machine toyelectric dodgemremote controlled carselastic-powered carobstacle climbercable cartoys made from battery-operated handheld fanstoy submarines + other boatsrotodynes rubber-band helicopter cyclic steering electric aeroplanes water rocket rocket flicking cardboard rings nipkov disc optical illusion radio controlled steam traction engine hot air balloons marble runs crystal radio magnetometer electric motor spinner magnetic padlock vortex gun made from plastic bucket magnetic pendulum electric dice spinner flips & flops archimedean screw water pump candle holderstirling engineair/steam motorhow it's done stories
Muslims Inventions in the Golden Age Muslims Inventions in the Golden Age Islamic Astronomy: Astronomical instruments Muslim astronomers developed a number of astronomical instruments, including several variations of the astrolabe, originally invented by Hipparchus in the 2nd century BCE, but with considerable improvements made to the device in the Muslim world. These instruments were used by Muslims for a variety of purposes related to astronomy, astrology, horoscopes, navigation, surveying, timekeeping, Qibla, Salah, etc. AstrolabesBrass astrolabe by Muhammad al-Fazari in the 8th century.Earliest surviving astrolabe in 315 AH (927-928 CE). Mechanical geared astrolabe by Ibn Samh (c. 1020).Navigational astrolabe was invented in the Islamic world.
How to design automata and mechanical toys Brief History of Automata The following buttons will lead you on to a number of topics designed to help you understand more about mechanisms, basic engineering principles as well as designing and making your own automata and mechanical toys. Craft Education have two books entitled: 'How to Design and Make Automata' and 'How to Design and Make Simple Automata' as well as aCD-ROM for more information click on the links below. Tools and Construction Techniques How to contact us How to design automata and mechanical toys
This circuit is an astable multivibrator, or oscillator. The two transistors are cross-coupled in such a way that the circuit switches back and forth between two states. In one state, the base of Q1 is about one diode drop above ground, allowing a base current to flow. This keeps Q1 switched on, in saturation mode, allowing a current to flow through the collector, keeping Q1's collector voltage low, and discharging C1. Astable Multivibrator (Oscillator)
The secret lives of invisible magnetic fields are revealed as chaotic ever-changing geometries . All action takes place around NASA’s Space Sciences Laboratories, UC Berkeley, to recordings of space scientists describing their discoveries. Actual VLF audio recordings control the evolution of the fields as they delve into our inaudible surroundings, revealing recurrent ‘whistlers’ produced by fleeting electrons . Are we observing a series of scientific experiments, the universe in flux, or a documentary of a fictional world? Magnetic Movie
Cool Experiments with Magnets This web site is devoted to magnetism and the cool experiments you can do with permanent magnets and electro-magnets. Some of the experiments are very basic - things you've done since second grade.

Magnet Man - Cool Experiments with Magnets

Using a Laser to Measure the Speed of Light in Gelatin Please ensure you have JavaScript enabled in your browser. If you leave JavaScript disabled, you will only access a portion of the content we are providing. <a href="/science-fair-projects/javascript_help.php">Here's how.</a>
Help NASA find life on Mars -- mapper
Keith's Think Zone
Vacuum Cleaner Used for Climbing Up Wall | HACKOLOG - Amazing Hacks and Mods
Aurora Detectors
Physics Solar Workshop
Tekniska museet - Tekniska museet