Chapter 16 - Light Energy

physical_science

Unit F - Motion and Energy

Chapter 16 - Light Energy

Investigate the properties of light. Build a spectoscope, investigate white and colored light, and learn how light carries information from distant objects.

White Light and Colored Light

Curriculum Materials

White Light and Colored Light

When does mixing every color under the rainbow create pure white rather than a murky brown or black? When light, not paint, is the medium—and you're subtracting, not adding, color.

Gathering Light

Curriculum Materials

Gathering Light

While refracting and reflecting telescopes use different means of collecting light, the same principle applies to both—the bigger the aperture, the more light collected.

Building a Simple Refracting Telescope

Curriculum Materials

Building a Simple Refracting Telescope

What could Galileo see when he looked through his telescope? Build a refracting telescope with lenses similar to the ones he used, and see the answer for yourself.

Detecting UV Light

Curriculum Materials

Detecting UV Light

You can't see the Sun's ultraviolet rays with your eyes—you just see their results on your freckled, tanned, or sunburned skin. Build a bracelet that immediately detects these invisible rays.

Building a Spectroscope

Curriculum Materials

Building a Spectroscope

White light is a mixture of all colors of visible light, but it doesn't always include every color of the rainbow. Build a spectroscope, and view the spectral fingerprints of different light sources.

Light: Its Secrets Revealed

Article

Light: Its Secrets Revealed

Did you know that when you look at a star, your eyes are capturing light that traveled all the way from the star to your eye? Learn more about how light carries information from distant objects.

Case Study: John Michell And Black Holes

Online Resource, Article

Case Study: John Michell And Black Holes

Imagine gravity so strong that even light is contained by its force. When a country parson first described black holes in 1783, the concept was so ahead of its time that it was mostly ignored.