Counter-beam lighting

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/counter-beam-lighting

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How big is Counter-beam lighting?Road tunnels, industrial warehouses, multi-story car parks, and large public venues
2. What is the lighting technology?Employs luminaires designed for upward light projection
3. What is the primary function?To illuminate overhead structures and enhance visibility in large vertical spaces
4. Why do tunnels use counter-beam lighting?Tunnels use counter-beam lighting so drivers can see the shape of the tunnel and any hidden obstacles. This helps keep everyone safe and prevents accidents.
5. How does counter-beam lighting help people see above them?The lights point up at the ceiling, and the ceiling reflects the light back down. This makes the whole space brighter and lets people see higher areas more clearly.

Luminaire: A complete lighting unit, including the light source and housing.
Light Flux: The total amount of visible light emitted by a source, measured in lumens.
Optical Components: Parts of a lighting fixture, like lenses or reflectors, that control light.