How Do Diffraction Glasses Work?
Key Takeaways
- How does diffraction work? Diffraction is when a wave (such as light) passes through tiny slits or openings called a diffraction grating, which causes the wave to spread out into a spectrum of seven rainbow colors.
- Rainbow Symphony diffraction glasses have lenses made from diffraction grating.
- When you view light, the lenses spread out the light waves which allows you to see the rainbow spectrum all around you.
How does diffraction grating work? We get this question often, so we decided to put together a quick guide that explains the science behind two of our popular products: rainbow glasses and diffraction grating slides.
How does diffraction work? Read on!
Early Studies of Light and Color
The principle of light diffraction dates back to experiments Sir Isaac Newton conducted in the 1660s. He observed that when a light source passed through a prism, it would split into its spectrum of seven distinct colors: red, orange, yellow, green, blue, indigo, and violet.Â
The term diffraction was coined by Francesco Maria Grimaldi, an Italian physicist and contemporary of Newton’s, who also studied the behavior of light and recognized its ability to bend around physical objects.Â
The colorful spectrum they observed so long ago is the same one we still see today in everything from rainbows in the sky to light bouncing off the back of a DVD!
Diffraction Defined
How does diffraction work? Before we get ahead of ourselves, let’s get technical for a moment and define the term diffraction as it applies to light and physics.
- Diffraction is the process by which a beam of light is spread out after passing through a narrow opening or across a grating.
While diffraction glasses specifically relate to the diffraction of light, diffraction could also apply to water waves, radio waves, or sound waves. Have you ever observed the ripples of water in a pond move around a stationary rock? Those waves are being diffracted. Cool, right?
How Do Diffraction Glasses Work?
Okay, so now you understand what diffraction is, but how does diffraction work to produce rainbows? Diffraction glasses (and diffraction grating slides) both work on this centuries-old principle of physics. To keep the explanation easy, we’re going to focus on rainbow glasses.
- We produce a high-quality, holographic lens that contains thousands of tiny lines.
- The surface of these lenses serves as our “grating” upon which the light will diffract.
- When you wear the glasses and direct them towards a light source, the beam of light strikes the holographic surface of the lens (our “grating”) and breaks up into its spectrum.
- What you see on the other side (behind the lens) is a dazzling array of sparkling colors, shapes, lines, and dots.
- As you move your head, the light dances across the surfaces of the lens for a truly spectacular experience!
How Does Diffraction Work With Other Light Colors?
We highly recommend observing different light colors while wearing your diffraction glasses or conducting experiments with your diffraction grating slides.
- A common white light source breaks up into the standard rainbow spectrum of colors.
- If you look at a red light source, you’ll see the red components of the light spectrum!
- The same principle applies to the other six colors of the ROYGBIV spectrum. Try them all!
Experience Diffraction for Yourself
Now that you know a bit more about how diffraction glasses and diffraction grating slides work and the amazingly elegant science behind them, it’s time to get yourself a pair!
At Rainbow Symphony, we offer a wide selection of high-quality fireworks glasses so you can see for yourself how diffraction works. Explore rave glasses that are perfect for enhancing laser shows at concerts, or treat the whole family to plastic diffraction glasses as holiday party favors.
Interested in expanding your study of light and color. Try our diffraction grating slides! These educational tools are a blast to experiment with at home, and they’re highly engaging teaching supplies for students of all ages.Â
Plus, we offer custom diffraction glasses so you can add your brand, logo, or other personalized touches for your next event! Simply contact support@rainbowsymphony.com to learn more.
