Tuning Fork Resonance Box – Sympathetic Beat Demonstration A426

Tuning fork resonance box set for sympathetic vibration and beat frequency demonstrations at A426.

This acoustics teaching apparatus allows students to clearly observe resonance, sympathetic vibration, and beat frequency effects in real time. Both forks are tuned to A (426 Hz), with one fork featuring a sliding mass to slightly alter its frequency for controlled beat production. When sounded together, the forks produce a distinct audible beat, making this set ideal for secondary physics classrooms, NCEA sound investigations, and wave interference demonstrations.

Key Features

• Two A426 tuning forks for resonance and beat experiments
• One fork fitted with adjustable sliding mass
• Threaded shanks securely screw into resonance box tops
• Clear demonstration of sympathetic vibration over distance
• Supplied complete with hammer

Specifications

• Frequency: A (426 Hz)
• Adjustment: Sliding mass for frequency variation
• Box size: Approx. 180 x 88 x 53 mm
• Mounting: Threaded shank connection
• Includes: 2 forks, 2 resonance boxes, 1 hammer