Diffraction
Also known as: wave bending
The spreading out of waves as they pass through a narrow opening or bend around the edges of an obstacle. Why we can hear around corners but not see around them (sound wavelengths >> light wavelengths).
💡 Intuition
Waves 'bend around corners'—you can hear someone even if you can't see them.
Core Idea
Diffraction is significant when the opening is comparable to the wavelength.
🔬 Example
🎯 Why It Matters
Why we can hear around corners but not see around them (sound wavelengths >> light wavelengths).
⚠️ Common Confusion
Larger wavelength = more diffraction. Radio bends around buildings; light doesn't.
Related Concepts
Prerequisites
Next Steps
How Diffraction Connects to Other Ideas
To understand diffraction, you should first be comfortable with waves and wavelength. Once you have a solid grasp of diffraction, you can move on to interference.
Go Deeper
Frequently Asked Questions
What is Diffraction in Physics?
The spreading out of waves as they pass through a narrow opening or bend around the edges of an obstacle.
Why is Diffraction important?
Why we can hear around corners but not see around them (sound wavelengths >> light wavelengths).
What do students usually get wrong about Diffraction?
Larger wavelength = more diffraction. Radio bends around buildings; light doesn't.
What should I learn before Diffraction?
Before studying Diffraction, you should understand: waves, wavelength.
🧪 Visualization Static
Visual demonstration of this concept.