How does a parabola function?
Where is the focus located?
If water is
in between, will it still function?
Are there other
examples of parabolas
Can the
WHISPERHILL be placed on every site?
Doesn't
arise a teriffying loud nois if a ball hits the wall or when
someone does scream loud?
Is your question not in this list? Please Email us
How does a
parabola function?
You have to make
any noise or speak from within te focal point with your face directed
to the wall. The sound will reflect against the curved parabola in a
bundled parallel direction and will travel straight forward into the
opposite parabola. All parallel sound waves will reflect against the
wall into the focal point again. This is why you can communicate over a
very long distance.
Where is the focus located?
At the WHISPERHILL the focal point is situated 2 feet from the top of
the frame and with a distance of 6.5 feet of the wall.
If water is in
between, will it still function?
Sound does travel over a
longer distance if the surface is
even.
A great water surface between
the two hills is no problem.
Are there other examples
of parabolas
In number of
theaters, churches and arena's
the parabola can be found.
Singers, musicians and actors who are standing in the focal point can
be heard throughout the public.
Colosseum - Rome
Hagia Sofia - Istanbul
parabolic
mirrors
Parabolas are also used for
reflection of light.
Light is similar as sound a wave that can be reflected en due to the
curve of the surface be
directed in any
direction. Light reflects the best against a mirror.
In a torch or car headlight is
also a parabolic mirror, that bundles the light.
The bulb is situated exactly in the focal point.
On a big scale it is utilized
in a lighthouse.
Modern examples are solar
generators or solar cooking.
Can
the
WHISPERHILL be placed on every site?
The WHISPERHILL can be situated in a variety of ways.
A few examples are given in the image below.
If you consider placement for a situation that is not shown below, you
can always send us your question.
You can also download a
A4 printable
version of the image below.
Doesn't
arise
a terifying loud noise if a ball hits the wall or when
someone does scream loud?
We can assure you that that does not happen because the resonance is muted by the contact between
the wall, ground and soil.
Objects
that
resonate freely, like for example a bell, does sound much louder.
As soon as you touch a ringing
bell
with your hand the volume of the sound will disappear.
The contact between the parabolic wall, the ground and soil result in
the same damping.