Lumen (unit)

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/lumen-unit

Step 2 · Questions

1. 1. What is the SI unit?

2. 2. What is the definition?

Step 3 · Words to know

Write what each word means, using the article.

• Luminous Flux

• Luminosity Function

• Radiant Flux

• Illuminance

Step 4 · Two facts in your own words

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