Posted on March 3, 2016 by Arbor Scientific
Radiation is the transfer of thermal energy using electromangetic waves, which includes visible light, infrared radiation, ultraviolet radiation, x-rays and microwaves and radio waves. A camera flash is designed to give off a whole lot of visible light in a short amount of time. The black ink in the newspaper absorbs this radiation and increases [...]
This post was posted in CoolStuff Newsletters, Chemistry, Energy, Light & Color and was tagged with Little Shop of Physics
Posted on September 8, 2015 by James Lincoln
Anna Spitz explains the physics of the eye, and proves how we actually do see an upside down world.
This post was posted in CoolStuff Newsletters, Light & Color, Optics and was tagged with James Lincoln, Newton, Experiment, Eye Poke, Anna Spitz
Posted on March 23, 2015 by James Lincoln
Welcome to our March 2015 Issue of our CoolStuff Newsletter. This month, we are featuring a simple, safe and Cool device called an Energy Stick. Physics teacher James Lincoln demonstrates several experiments that help students understand the principles of electric current and light. James has authored many of our past CoolStuff Newsletters, and teachers have [...]
This post was posted in CoolStuff Newsletters, Electricity, Energy, Light & Color, Sound & Waves, Teacher Tools and was tagged with wavelength, electricity, voltage, human body, electric current, Energy Stick, experiments, circuit, LEDs, conductivity
Posted on May 16, 2014 by James Lincoln
Did you know the yellow you see on your smart phone doesn't actually contain the color yellow? It's true! Watch this revealing video to see this - AND 9 more great demos that show there's more to studying light and color than meets the eye.
This post was posted in CoolStuff Newsletters, Chemistry, Energy, Light & Color, Optics, Measurement and was tagged with wavelength, refraction, frequency, reflection, Rspec-explorer, RSpec, spectroscopy, color experiments
Posted on October 31, 2013 by James Lincoln
When I visited England this summer, I had the opportunity to walk in Isaac Newton's footsteps at his birthplace, Woolsthorpe Manor.
It is a little tourist museum far from the major train stops. You will probably have to take a long taxi ride from the train station at Grantham, but it’s not so far from London [...]
This post was posted in CoolStuff Newsletters, Force & Motion, Light & Color
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 May 8, 2013 by Arbor Scientific
Teaching the spectra of visible light can be an engaging classroom activity. But, it’s always been challenging to find ways to go beyond simple passive demonstrations.
Hand-held diffraction “rainbow” foil (sometimes mounted in cardboard glasses) can be fun. But students often have difficulty even spotting the spectrum. “I can’t see it!” is the common complaint. And [...]
This post was posted in CoolStuff Newsletters, Light & Color
Posted on April 3, 2013 by James Lincoln
What can you do with a plasma ball? We get this question a lot! Check out these simple, cool demos using everyday lab items like fluorescent lamps, LEDs, neon gas tubes, and even your own body! You’ll be amazed at how easy and fun teaching and learning about electrostatics can be.
This post was posted in CoolStuff Newsletters, Electricity, Electrostatics, Energy, Light & Color
Posted on October 1, 2008 by Buzz Putnam
One of the most common questions asked by students is “Why is the sky blue?” or “Why is the Sun yellow?” The answer is found by understanding color science concepts and some basics of color addition. Assuming that the Sun is “white” as viewed from space (no atmosphere) and that the three primary colors of light (red, blue and green in equal hues, saturation levels, etc) compose the white color that is observed.
This post was posted in CoolStuff Newsletters, Light & Color and was tagged with wavelengths, Buzz Putnam, Putnam, martian light, scattering, color
Posted on August 1, 2007 by Chris Chiaverina
You may not be aware of it, but polarized light is all around you. Do you have an LCD flat screen television, a laptop computer, a calculator, or other liquid crystal display? Well then, you have been exposed to polarized light. Light reflected from non-metallic surfaces such as water, a polished table top, and glass is also partially polarized as is the light scattered by the earth’s atmosphere.
This post was posted in CoolStuff Newsletters, Light & Color, Optics and was tagged with waves, light, Polarization, polarized plane