Physics and teaching
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.. Thermal photography. 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: Pranav Mistry. Calculations - DiracDelta Science & Engineering Encyclopedia. Aerodynamics Drag Coefficient A dimensionless value that allows the comparison of shape and orientation of different bodies.
Physics. Electromagnetic radiation. 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. Liquid Crystal Group Hamburg. General Relativity — Einstein Online. 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. SudoGlove Hardware Controller. 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. Table of contents. Science Central. 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. Association of Science-Technology Centers. Astable Multivibrator (Oscillator) 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. Magnetic Movie. 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? Magnet Man - Cool Experiments with Magnets. Cool Experiments with Magnets This web site is devoted to magnetism and the cool experiments you can do with permanent magnets and electro-magnets.
The enterprising scientist Jem Stansfield got the same effect in real life from the two vacuum cleaners purchased at Tesco. From the video below, he demonstrated his Spiderman Prowess by climbing up the 120 feet front wall of BBC Television center as he documented his experience. The image below shows how he used the suction power of a modified vacuum cleaner motor to hold his weight on the wall.
Aurora Detectors. You don't have to check the internet to find out when the Northern Lights might be visible from where you are, you can make your own magnetometer to act as a detector. You needn't be a rocket scientist to do it! There are two different detectors: The pop-bottle-detector is very easy to make, and very easy to use. The compass-detector uses a simple h4_op_amp circuit with a negative feedback loop and is suitable to be used with a data logging device, or other voltage measuring device.
See further information about where to obtain the parts and details of the original designs. Physics Solar Workshop. Solar power technology in action. In one way or another, almost every form of energy we use originates as energy from the Sun. Solar energy directly powers photovoltaic cells and thermal collectors. Tekniska museet - Tekniska museet.