Posted on January 14, 2015 by James Lincoln
10 thermal conductivity demos for less than $12
Watch Physics Teacher James Lincoln use the simple, inexpensive Liquid Crystal Sheet to visually demonstrate:
-the temperatures of varying light sources
-how styrofoam insulation works
-the wavelength of a microwave
-plus much more!
This post was posted in CoolStuff Newsletters, Energy, Sound & Waves and was tagged with heat transfer, friction, insulators, James Lincoln, Thermal conductivity, Thermocline, Liquid Crystal Sheet, Heat Experiments, Heat sensitive paper
Posted on September 23, 2014 by Dr. David Kagan
Ever realized how waves and their properties are an integral part of baseball? See proof with this super slo-mo of a bat meeting a 90mph fastball!
This post was posted in CoolStuff Newsletters, Sound & Waves and was tagged with waves, physics, baseball, Sound & waves
Posted on September 18, 2013 by James Lincoln
I have been using tuning forks in my classroom for 10 years, and in each of those years I have discovered several new tricks. I hope you can learn many of these from this publication. For a more complete treatment and my references, please see my article in “The Physics Teacher” March, 2013.
This post was posted in CoolStuff Newsletters, Energy, Lasers, Light & Color, Measurement, Sound & Waves and was tagged with tuning fork, resonance, Lissajous Figures, beats, measure the speed of sound, transmission of sound
Posted on January 4, 2013 by Dr. Joel Bryan
Standing waves are a common phenomenon usually shown through the vibrations of bridges or springs. Horizontal standing waves are produced in a lab by students shaking cords, springs and bungee cords. However, standing waves can also be produced in a vertical fashion by a single student. Using the new nylon Spring Wave, students are able to produce vertical standing waves easily and calculate the speed of the spring. This is a great little "twist" on the age-old standing wave lab that you have in your arsenal.
This post was posted in CoolStuff Newsletters, Sound & Waves and was tagged with Standing Wave, spring wave
Posted on March 15, 2012 by Dr. Joel Bryan
In the video clip, you see the Super Springy stretched out a distance of 24 feet. By adjusting the frequency of the waves, the wavelength may be manipulated so that different numbers of loops can be formed. As with all standing waves, the length of one loop is one-half wavelength. You can find the wavelength (λ) of the standing wave by dividing its total length by the number of loops to get the length of one loop, and then doubling it.
This post was posted in CoolStuff Newsletters, Sound & Waves
Posted on December 12, 2011 by Buzz Putnam
If you are looking for something that occurs in nature and is tied to the physics classroom, look no further than vortex rings. These Vortex Rings are more common and widespread in nature than most people had probably thought; in fact they are studied in great detail by aeronautical engineers and combustion scientists. But we just think they are cool!
This post was posted in CoolStuff Newsletters, Pressure & Fluids, Sound & Waves and was tagged with vortex rings, smoke ring cannon, Dolphins
Posted on August 1, 2011 by Buzz Putnam
The Resonance Bowl can be traced back to ancient Tao tradition in China during the Han Dynasty (202 BC - AD 9) making this an ancient, but still highly effective, way to discuss and demonstrate behavior of waves and their interactions. Fill the bowl with water, rub the handles just the right way, and water [...]
This post was posted in CoolStuff Newsletters, Sound & Waves and was tagged with Resonance Bowl, Standing Wave, Sound and Waves
Posted on May 1, 2011 by Buzz Putnam
You probably won't find this product in the Arbor Scientific catalog anytime soon, but it is definitely cool stuff! The Anti-Laser was demonstrated recently for the first time at Yale University. The fundamental concept of the Laser is that it is able to transmit "Coherent Light", which are monochromatic (one color) light waves that are [...]
This post was posted in CoolStuff Newsletters, Lasers, Sound & Waves and was tagged with laser, Optics, Anti-Laser, Buzz Putnam, Putnam
Posted on April 1, 2011 by Arbor Scientific
Every once in a while we come across something that has the chance to make a real difference in the classroom in both engaging the students and making your life as a professor a little easier. We think this may be one of those times. Ripple tanks are such a wonderful way to teach your [...]
This post was posted in CoolStuff Newsletters, Sound & Waves and was tagged with interference, waves, refraction, ripples, lecture, Mini Ripple Tank, defraction
Posted on February 1, 2011 by Arbor Scientific
Show Them the Speed of Light, Using a Chocolate Bar!
If you have the typical classroom, your students will be a little extra distracted this February 14th for Valentine’s Day. We found a fun way to capture their attention on this sweetie-filled holiday and still teach a little physics in the process. In particular, you can [...]
This post was posted in CoolStuff Newsletters, Sound & Waves and was tagged with wavelength, frequency, Valentine's Day, Speed of Light, chocolate