79 Stained Glass-Mid

Stained Glass FOCUS Question What happens when light shines on objects?

What Happens to the Light? Look at the cup. What will happen when you shine light on it? The cup blocks the light. The light will not shine through. What will happen when you shine light on this cup? Almost all of the light will shine through.

Certain things block some light and let some light shine through. What will happen when you shine light on this cup? Some of the light will shine through. Some of the light will be blocked. Do You Know? Sunglasses block the parts of sunlight that can hurt your eyes. But some light gets through letting you see.

Stained Glass Stained glass is art that is made out of colorful glass. You see stained glass in windows and sculptures. People who make stained glass are artists. They think about how light moves. How will light shine through this colored glass?

Most clear glass lets nearly all the light through. Most stained glass lets only part of the light through. Some things do not let any light shine through. Do You Know? Long long ago, many people could not read. Stained glass windows were used to tell stories and to teach people.

Colored Glass, Colored Light Look at the stained glass, below. The glass is many colors. The light shining through is many colors, too. Sunlight has all the colors of the rainbow. When it shines through the stained glass, most colors of light get blocked. Red glass lets only red light through. The green glass lets only green light through.