A drop of dish soap is introduced into a bowl of water with ground black pepper. Due to the reduction in local surface tension when the dish soap enters, the pepper rapidly moves outward toward the edges of the bowl.
Katya Flaska
Categories
Flow Vis Guidebook
- Introduction to the Guidebook
- Overview 1: Phenomena. Why Does It Look Like That?
- Overview 2: Visualization Techniques
- Overview 3: Lighting
- Overview 4 - Photography A: Composition and Studio Workflow
- Overview 4 - Photography B: Cameras
- Overview 4 - Photography C: Lenses - Focal Length
- Overview 4 - Photography C: Lenses - Aperture and DOF
- Overview 4: Photography D: Exposure
- Overview 4 - Photography E - Resolution
- Overview 5 - Post-Processing
- Clouds 1: Names
- Clouds 2: Why Are There Clouds? Lift Mechanism 1: Instability
- Clouds 3: Skew - T and Instability
- Clouds 4: Clouds in Unstable Atmosphere
- Clouds 5: Lift Mechanism 2 - Orographics
- Clouds 6: Lift Mechanism 3 - Weather Systems
- Boundary Techniques - Introduction
- Dye Techniques 1 - Do Not Disturb
- Dye Techniques 2 - High Visibility
- Dye Techniques 3 - Light Emitting Fluids
- Refractive Index Techniques 1: Liquid Surfaces
- Refractive Index Techniques 2: Shadowgraphy and Schlieren
- Particles 1- Physics: Flow and Light
- Particles 2: Aerosols
- Particles 3: In Water
- Particles 4 -Dilute Particle Techniques
- Art and Science
- TOC and Zotpress test
- Photons, Wavelength and Color
3 Comments. Leave new
I like the level of detail you’re able to achieve and the contrast of the black and white.
Great video! I think maybe adding some music to the video itself and perhaps adding a slow motion clip of the pepper moving would be a great addition for the overall visual of your flow phenomenon!
I think the angular rotation speed of the pepper slowed down when it moved to the outside of the bowl, which is exactly what you might expect if angular momentum is conserved. I like how you can still see some of the pepper below the surface continue to rotate in the middle after the surface pepper moves away.