Twisted Vision

At one point, all mammals carried only two color receptors, but now most humans carry three. An informative presentation and hands-on activity demonstrate how this evolved through genetics. By participating in the activity, pupils...

Look beyond the light! An engaging activity introduces young scholars to the application of a spectroscope. The instructional activity is the fifth in a series of six and focuses on the analysis of the elements of the sun.

Your class might be surprised to learn that mirrors have been around since the first century AD! Young scientists explore reflection and refraction of light through a series of challenges. They use this knowledge to design their own...

Here is a backyard explanation of the polarization of light. Using his porch railing, the video narrator demonstrates that if the grating is lined up with the direction of light waves, represented by a hula hoop, the waves are allowed to...

All this talk about seeing the light... but, what is it, and how do we see it? Science students learn the basics of the nature of light in a narrated video that discusses concepts such as how light behaves, the electromagnetic...

Shine a little light on the topic of visible light with a quick video lesson. The lesson highlights the basics of visible light including wavelength and electromagnetic energy. Learners discover how humans' eyes process the...

An illuminating activity demonstrates how interference of light waves creates a pattern. Using Plexiglas™ and construction paper, participants see rainbows appear as they twist or press against the plastic plates. After the activity, you...

Humans can only see visible light, but some insects can see ultraviolet light. Through a simulation, pupils explore how we see colors using one bulb. It moves on to demonstrate how we see colors by mixing three different bulbs (red,...

Does light affect molecules or does it go right through them? The simulation explores four different types of light: microwave, infrared, visible, and ultraviolet. Scholars alter the energy level of each as it is aimed at seven different...

Use a container full of water as a prism and show that as light is bent, the individual colors from different wavelengths become visible. This explains why the sky appears to be blue midday, and why as the sun nears the horizon, it looks...