Diffraction

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/diffraction

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. Who discovered Diffraction?First systematically observed and named by Francesco Maria Grimaldi around 1665
2. What is the related topics?Interference, Huygens' Principle, Wave-Particle Duality, Optical Resolution, Spectroscopy, Holography
3. What is diffraction and why does light bend around corners?Diffraction is when light waves spread out and bend when they hit an obstacle or pass through a small opening. It happens because each point on the wavefront acts like a new source of waves.
4. How does diffraction create bright and dark patterns?The new waves interfere with each other, making some spots brighter (constructive) and others darker (destructive).

Huygens' Principle: Every point on a wavefront acts as a source of secondary spherical wavelets that propagate forward.
Interference: The superposition of two or more waves, resulting in a new wave pattern with either increased (constructive) or decreased (destructive) amplitude.
Diffraction Limit: The theoretical minimum size of a feature that can be resolved by an optical instrument due to the wave nature of light.