Rubens Tube – Standing Wave Flame Tube Demonstration Kit

Bring sound waves to life with this Rubens Tube (standing‑wave flame tube) – a dramatic physics demonstration apparatus designed for advanced science demonstrations at the college and university level. This preassembled, durable unit vividly displays acoustic standing waves by converting sound pressure changes into visible flame patterns.

When connected to a gas supply and audio signal, the flames rise and fall to reveal compression and rarefaction in real time. Students and audiences can clearly see the relationship between frequency, wavelength, and resonance, making it a powerful tool for advanced instruction in wave phenomena and sound‑wave visualization.

Safety Warnings

⚠️ For instructors only. This product uses an open flame and requires a regulated flammable gas supply.

⚠️ Do NOT use in unsupervised classroom settings. Operation must take place in a well‑ventilated space or fume hood with proper fire‑safety equipment on hand.

⚠️ Read and follow all included instructions regarding gas connections and ignition procedures before use. Improper setup or operation can result in fire, burns, or other serious injury.

⚠️ After use, the apparatus is HOT. Give the apparatus ample time to cool down in a safe place before moving or storing. 

Ideal Applications

• College and university physics laboratories
  

• Science outreach events and lecture demonstrations
  

• Demonstrating standing waves, resonance, and acoustic pressure phenomena for large audiences