Ultrasonic Grating Apparatus

The Ultrasonic Grating Apparatus is both a unique demonstration of the interaction of longitudinal sound waves and transverse light waves and also a method for the precise determination of the speed of sound in liquids, which is otherwise difficult to do in the undergraduate lab. The core of the apparatus is a parallel-sided glass tank that houses the liquid sample and contains a lead zirconate titanate (PZT) ultrasonic transducer. The transducer is energized by an RF signal in the 8-12 MHz range. Resonances can be found to set up a standing wave field in the liquid, which results in a periodic variation of the liquid’s refractive index along the tank.

Contents:
1. Optical Bench, 1000mm . . . . . . . . . . . . . . . . . . . . . 1
2. Rider, Lateral Adjustment . . . . . . . . . . . . . . . . . . . . . 1
3. Riders, Plain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Micrometer Eyepiece . . . . . . . . . . . . . . . . . . . . . . . . 1
5. Eyepiece Adapter Ring . . . . . . . . . . . . . . . . . . . . . . 1
6. Glass Tank for HF Grating . . . . . . . . . . . . . . . . . . . . 1
7. HF Generator and Frame . . . . . . . . . . . . . . . . . . . . . 1
8. Optical Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
9. Connecting Cords . . . . . . . . . . . . . . . . . . . . . . . . . . 2
10. Lenses, f = +170mm . . . . . . . . . . . . . . . . . . . . . . . 2
11. Height Fixing Collar . . . . . . . . . . . . . . . . . . . . . . . 1
12. Eyepiece Holder, Adjustable . . . . . . . . . . . . . . . . . 1
13. Lens Holders, Plain . . . . . . . . . . . . . . . . . . . . . . . . 2
14. Adjustable Slit . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
15. Mercury Lamp, 20W, 110V . . . . . . . . . . . . . . . . . . 1

INSTRUCTIONS FOR USE PLEASE CLICK HERE