Photoelectric Sensors
The photoelectric effect demonstration participants to compete to see who can fill their bucket to the top and trip the laser that releases all the water. First to trip the laser, which relies on photoelectric sensors, wins!
The photoelectric effect demonstration participants to compete to see who can fill their bucket to the top and trip the laser that releases all the water. First to trip the laser, which relies on photoelectric sensors, wins!
Everybody knows about radio waves transmitting the music, phone calls and data. But nobody knows that potato can serve as a radio! This is the simplest kind of radio, which can be made at home in several minutes.
In order to create a successful circuit, you must close the loop. By closing the loop surrounding this rod, the circuit is successfully completed and observable by the screaming and lighting up of the rod.
This demo will show how sound/pressure waves cause a bubble in a viscous fluid to collapse on its own and give out bright flashes of light. In the process the bubble interior can get very hot: over 10,000 K. Another demo we are working on will again use sound to produce light. Here the sound […]
Ever want to see the oscillation caused by a sound wave in your ear? Using a can, simple latex membrane with a mirror glued on it, and a laser beam, we can visualize motion of a sound wave like on an oscilloscope! Interesting patterns emerge!
By syncing the frequency of vibration of falling water to that of a camera, water gives the illusion of not moving at all, and, in some cases, going upwards.
Resistance of most materials decreases with decreasing temperature. To demonstrate this effect a light bulb is connected in series with a coil of very fine copper wire and a DC power supply. The voltage is adjusted so that the bulb glows dimly. When the coil is immersed in liquid nitrogen the very fine copper wire […]
Each of these devices is run distinctively by controlling the current and voltage generated by an electrical source. We are working to generate a demonstration, which brings to life the magic of circuit design of a complicated LED system. Students will be able to choose the path of the current and voltage by choosing from […]
In this demonstration we show how one can levitate small objects in midair using the pressure from focused sound waves. The styrofoam beads sit slightly below the nodes of the pressure waves. For these points the downward force of gravity is balanced by the upward force provided by the pressure waves. We can also use […]
We create strong magnetic fields inside a wire vortex such that, by placing a magnetic ball in the middle of it, the ball starts spinning even though nothing seems to be touching it.
Via electromagnetic induction, power can be transferred from one circuit to the next. This demonstration powers an LED light wirelessly. The primary circuit is driven by a function generator. Similar technology enables wireless charging of phones, cars, and much more!
The Texas A&M astronomy department is paving the way in space imaging. Professor Darren DePoy says the Aggies play a huge role in the world’s largest telescope, the Giant Magellan Telescope. “Building instruments that will go on that telescope that will allow us to make the science observations to what the universe is like better.” […]
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