With
limited applicability like simple magnets or refrigerator magnets to hold
papers when attached to a metal surface, most people recognize magnets as materials
or toys.
What
many people do not know is that in fact in many areas of our lives like
security devices, medical services, transportation, Magnetic
Filter Rod, magnetic materials, and even nowadays communications, magnetic
materials have a wide range of applications.
They
are used in jewelry where the development of magnetic earrings and bracelets has
change the way people conceive magnetism.
Speakers
A
wire carrying an alternate current is present in the speakers. It experiences a
force that generates sound waves by rarefaction and compression of the air
surrounding the device when the wire is located in the magnetic field of a
circular permanent magnet. Reproducing the sound generated at the source, this
vibrates a cone shaped diaphragm.
Magnetic Resonance
Imaging (MRI)
For
the diagnosis of different diseases like cancer, MRI is a technique widely use
nowadays in medicine. Its main use depends on the construction of images of
internal organs of the body to diagnose and find the disease, avoiding the use
of surgery.
In
the presence of Magnetic
Chuck and a high magnetic field, MRI uses the properties of water to
produce an anatomical image of specific areas of the body because the body is
composed of mainly water molecules, being especially useful for the imaging the
heart, muscles and the brain.
To
make hydrogen atoms in water molecules resonate at a given frequency In a MRI
device a magnetic field is used and then changing the energy state of the
spins, a radiofrequency pulse is applied.
Due
to the relaxing of the spins, electromagnetic signals are emitted When the
radiofrequency pulse stops; an image is formed taking advantage of tissue
contrast and this is detected by the instrument.
Other
uses of magnetic devices like Motor arc Magnets
include debit and credit cards, electric guitars, televisions, toys and electric
motors and represent an essential factor in the development of new technologies
for various purposes around the world.
No comments:
Post a Comment