Thames & Kosmos Perfume Science handleiding
Handleiding
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7
Just about everything has a smell. And
smells are unavoidable. Practically all other
sensory inputs can be avoided. You can
close your eyes, you can turn off loud music
or plug your ears, you can avoid touching
something, and you can avoid tastes by
closing your mouth. But there is one thing
you cannot do: You cannot stop breathing
and thus you cannot stop smelling. So what
do we smell? And how does our sense of
smell work?
OUR COMPLEX SENSE OF
SMELL
Smells are generally a complex mix of
different individual components. However,
your nose can mostly tell you, based
on a few elementary smells, whether a
particular fragrance is a freshly brewed
cup of peppermint tea or a recently peeled
orange.
Scientists working with smells estimate
that we can detect between 4,000 to 10,000
different fragrances and smells. But a
human being's sense of smell is just average
in comparison to the super special smelling
capability of some animals.
Humans could never equal the
performance of a hunting dog, whose
smelling organ can sense the sweat on
the feet of a person even though they
are covered with thick, recently washed
socks inside heavy rubber boots. But even
though our nose is not that sensitive, it is
receptive enough to differentiate between
innumerable smells and their fine nuances.
FROM THE
NOSE TO THE
BRAIN
We recognize fragrances and smells and
store them in one of the most primitive
parts of the brain. Our nose and brain
communicate almost instantaneously.
The Physiology of Smell
When we breathe, small particles of
fragrance are carried by the air into the
nose and transported to the olfactory
epithelium, a membrane that is located
way up in the nasal cavity under your
brain. Olfactory (ohl-fak-te-ree) is a word
that means relating to the sense of smell.
In the olfactory epithelium (eh-pe-thee-
lee-im), an area about the size of a quarter,
there are more than 10 million olfactory
(or smelling) cells. Each of these cells
has cilia, or microscopic hairs, on it. The
cilia are sensitive to molecules in the air. In
fact, the smelling cells are very specialized
and different cells have evolved to sense
different smells. Scientists have identified
over 20 different smelling cells.
When a fragrance molecule comes in
contact with the correct smelling cell for
it, an electric impulse, or nerve signal, is
released which is passed on instantaneously
through the olfactory nerves to the
olfactory bulb. From there, the smelling
ABOUT YOUR SENSE OF SMELL
SUPER DOGS HAVE SUPER NOSES!
When it comes to smelling, dogs are specialists
and surpass the smelling ability of human
beings by miles. They are especially superior to
us when it comes to smells that are important
for them, such as fatty acids, because these are
found in the scent of deer and other animals.
Fruits are irrelevant for dogs, and they do not
smell these any better than we do.
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Productinformatie
Merk | Thames & Kosmos |
Model | Perfume Science |
Categorie | Niet gecategoriseerd |
Taal | Nederlands |
Grootte | 9865 MB |