Jeulin 223 008 Mode D'emploi page 59

Ultrasounds
Moduson table
Ref :
223 008
2 Reflection of ultrasonic waves
Introduction: The purpose of the experiment is to verify the law of reflection. The influence
of the absorption phenomenon of waves ultrasonic will also be observed.
2.1 Step 1: Setup
 The system is set up as follows:
The reflective plane (mirror) with magnetic sole is positioned at the centre of the arc-shaped
recesses. An ultrasonic transmitter and a receiver are positioned as shown on the diagram.
The MODUSON main transmitter can be used directly but its base is too large and does not
fit into the recess in the moulded PVC table. It is preferable to use the complementary
transmitter 2, which has a suitable size, at the expense of a slightly bulkier setup. The
transmitter 2 is positioned e.g. on the 30 deg. graduation on the left.
The transmitter 2 is connected to the main transmitter. The main transmitter is powered via a
15 V power supply and its switches are set on Continuous and OFF, respectively (its
transmitting element is then cut off and only the transmitter 2 is powered).
The receiver is positioned in the circular recess closest to the transmitter (radius = 15 cm).
 Material:
List the equipment used.
Setup schematic: complete the following schematic (use the definitions given on the next
page)
ENGLISH
15 V
Transmitter
O
Mirror
n
56