← Back to the archive★ Support my pages
DD-479ScienceFiled Last updated

Bubble Blowing

Short answer: A bubble ring is a vortex ring of rotating water with air trapped in its core. When two collide, their vortices interact: head-on rings may briefly merge before breaking into smaller bubbles, while angled collisions can twist, reconnect or pass through each other, the Reel says.

Outcomes depend on speed, rotation and angle. The footage, credited to astronomy.views, shows divers' bubble rings meeting underwater.

VideoWrite-up1 sources
More like this★ Support my pagesCite this file

What should you know about Bubble Blowing?

Quick facts. Each one stands alone and has a stable ID you can cite.

  1. Vortex ring.

    DD-479-F01 · Write-up · Exhibit A (Structure)

  2. Trapped air.

    DD-479-F02 · Write-up · Exhibit B (Core)

Video transcript: Bubble Blowing: Underwater Bubble Rings Can Merge, Bounce or Break Apart

Did you know, when bubble rings collide underwater, their vortex structures interact in complex ways, leading to merging, bouncing, or breaking apart. These rings are rotating loops of water with trapped air, and their behavior upon collision depends on factors like speed, rotation, and angle. If two rings meet head-on, they may temporarily merge before destabilizing into smaller bubbles. When they collide at an angle, they can twist and pass through each other due to the conservation of momentum. NOW YOU KNOW!

Burned-in captions, read frame by frame (see transcript.md) · 23.6s Reel ·

Video coming soonBubble Blowing · Instagram Reel
Bubble Blowing: Underwater Bubble Rings Can Merge, Bounce or Break Apart Instagram Reel · · 23.6s

The write-up

Underwater bubble rings can merge, bounce or break apart. It depends on speed, spin and angle.

  1. Exhibit A

    Structure

    Vortex ring.

  2. Exhibit B

    Core

    Trapped air.

  3. Exhibit C

    Head-on

    Merge, then break.

  4. Exhibit D

    Angled

    Twist or pass through.

  5. Exhibit E

    Factors

    Speed, spin, angle.

Questions people ask about Bubble Blowing

What is a bubble ring?

Rotation.

Source: Write-up · Exhibit A (Structure) · Wikipedia: Bubble ring

Core contains?

Trapped.

Source: Write-up · Exhibit B (Core) · Wikipedia: Bubble ring

Head-on result?

Unstable.

Source: Write-up · Exhibit C (Head-on) · Wikipedia: Bubble ring

Factor?

Spin.

Source: Write-up · Exhibit D (Angled) · Wikipedia: Bubble ring

Angled rings may?

Reconnection.

Source: Write-up · Exhibit E (Factors) · Wikipedia: Bubble ring

Test Your Knowledge

All quizzes →

5 questions, all from this case file. Answers are revealed instantly.

  1. What is a bubble ring?

    1. A vortex ring
    2. A soap film
    3. A jellyfish
    4. A fish
    Show the answer

    Answer: A. A vortex ring Rotation. Source: Write-up · Exhibit A (Structure) · Wikipedia: Bubble ring

  2. Core contains?

    1. Air
    2. Oil
    3. Sand
    4. Ice
    Show the answer

    Answer: A. Air Trapped. Source: Write-up · Exhibit B (Core) · Wikipedia: Bubble ring

  3. Head-on result?

    1. Merge then break
    2. Explode
    3. Freeze
    4. Sink
    Show the answer

    Answer: A. Merge then break Unstable. Source: Write-up · Exhibit C (Head-on) · Wikipedia: Bubble ring

  4. Factor?

    1. Rotation
    2. Color
    3. Temperature only
    4. Depth only
    Show the answer

    Answer: A. Rotation Spin. Source: Write-up · Exhibit D (Angled) · Wikipedia: Bubble ring

  5. Angled rings may?

    1. Pass through each other
    2. Turn to ice
    3. Vanish instantly
    4. Glow
    Show the answer

    Answer: A. Pass through each other Reconnection. Source: Write-up · Exhibit E (Factors) · Wikipedia: Bubble ring

Cite this case file

Easterling, Marcus. "Bubble Blowing." The Detail Department (DetailEnjoyer), case file DD-479, last updated Feb 5, 2025. https://detailenjoyer.com/case/bubble-blowing/

Permalink: https://detailenjoyer.com/case/bubble-blowing/ · Last updated

Markdown version

Cite a single fact by its ID, for example DD-479-F01 → https://detailenjoyer.com/case/bubble-blowing/#DD-479-F01