Physical principle:
The principle behind linear wave motion is that energy is transferred along
the wave's path of motion, but particles in the path do not move forward or
backward - they oscillate up and down. When the wave's source is non-linear,
the oscillations become irregular and ripples are produced along the wave fronts.
How to play:
The basic idea is that at least one end of the toy must be oscillated
in order to produce waves along the string. for a basic game featuring two children,
they stand facing each other, each holding onto a stick at their respective
ends. The string must not be pulled taut. When either of the sticks at the end
are grasped and moved up and down, wave motion propagates, causing the other
sticks to move in harmony with the wave fronts. Fascinating patterns are then
produced along the length of the toy. If the motion at the source is not two-dimensional,
all sorts of ripples will be seen. In addition, two such toys can be linked
to form a crossed-wave simulator whereby four ends can produce oscillations.
This is ideal for children of all ages who are fascinated by waves and ripples
in fluids. The child's enjoyment and creativity can be further enhanced if the
Wave Simulator is manufactured with different patterns painted across the sticks,
or even with DIY coloring kits.
Technical information:
- Cost:
Initial estimate is $5. This is a very inexpensive toy because all the materials
are commonly available.
- Durability:
Nylon makes a good material for the string, as it is waterproof and durable.
Wooden or plastic sticks make up the rest of the components, both of which are
easily painted or dyed. The forces experienced by the sticks will not be so
great that the sticks will easily snapped, and the string can be threaded through
via holes at the ends of the sticks.
- Safety:
Emphasis on rounded edges is the main priority. Plastic might be a better choice
for the sticks, as splinters might appear on wooden sticks after prolonged usage.
The gap between sticks should not be large enough for a child's head to pass
through, so that there is no danger of strangulation.