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Nikola Tesla (1856-1943) is one of three Americans whose name was honored as an
Tesla = Weber/m²
The Tesla (symbol: t) is the SI unit of magnetic flux density.
Above: Nikola Tesla (1856-1943) at the age of 38.
Nikola Tesla (1856-1943) is one of 3 Americans whose name is honored as an International Unit. The other two famous Americans are Joseph Henry (1797-1878) who discovered electromagnetic induction and Enrico Fermi (1901-1954), the Italian American physicist who developed the first nuclear chain reaction. The "Henry" (Symbol H) is the Standard International unit of inductance.
Nikola Tesla's name has been honored with the international unit of magnetic flux density called "Tesla". All magnetic resonance imaging (MRI) machines are calibrated with Tesla Unit (from .2 Tesla to 9 Tesla). MRI machines work on the principle of a homogeneous magnet field. Nikola Tesla discovered the Rotating Magnetic Field in Budapest, 1882. The Tesla Unit for magnetism was established in 1956 in the Rathaus of Munich, Germany by the International Electrotechnical Commission Committee in Action.
Because of the tremendous importance of the MRI technology and widespread use of the MRI machines around the world, which are all calibrated in Tesla Units, Tesla's name connected with the MRI will be known more and more in the future and the years to come.
Magnetic Resonance Imaging (MRI) is extremely important for medical diagnosis of internal organs of the human body, especially the diagnosis of cancer, tumors, degenerative diseases of the brain and spinal cord. The modern diagnosis of the internal organs of the human body would be today unthinkable without MRI. MRI machines are widespread with many variations in size and capacity all around the world. The revenue of MRI machines sales was 1.46 billion dollars in 2002. Revenue for MRI machine sales is expected to increase in the following years.
MRI employs a strong homogeneous magnetic field and specific radio frequency to which many elements, especially hydrogen nuclei respond with radio frequency signals. These signals are analyzed by computer reconstruction algorithms. The healthy tissue and pathological tissue have different radio frequency signals and produce different images on MRI. Therefore enable us to make diagnosis of pathological tissues of the body.
MRI has the advantage over CT scan, it uses no ionizing radiation and does not cause cumulative harm. The only contraindication of those related to the high magnetic field. Magnetic-sensitive objects like pacemakers, watched and magnetic tapes are contraindicated.
A Short History of the MRI (Click here for article)
Joseph Henry (1797 - 1878)
The henry (symbol: H) is the SI unit of inductance.
The information below on Joseph Henry can be found at:
Enrico Fermi (1901-1954)
The Fermi (symbol: fm) is a non-SI unit of length that is internationally recognised and equivalent to the SI-recognised femtometre. The unit was named in honour of Enrico Fermi and is often encountered in nuclear physics as a characteristic of this scale. Text from Wikipedia
The text below can be found at:
The years between 1926 and 1938 are considered Fermi's "golden age." He accepted the chair of theoretical physics (existing in theory only) at the University of Rome in 1926 and three years later became one of the first thirty members (and only physicist) to be elected to the Royal Academy of Italy. In 1928 he married Laura Capon; they had two children.
Fermi's most famous work of this period was his 1933 theory of nuclear beta decay. In beta decay a particle (beta particle), known to be identical to an electron in that it is said to have a "negative" electric charge, is given off from the nucleus (core) of an atom. This increases the atomic number (the number of protons, or particles with "positive" electric charges, minus the number of electrons) of the nucleus by one unit. Fermi worked out a detailed theory of beta decay based on the idea that a neutron (a particle with no electric charge) in the nucleus "decays," or changes, into three particles: a proton, an electron (beta particle), and a neutrino. Actually, the neutrino (a particle without mass or electric charge) was not found in experiments until the 1950s.
Tesla Posters - Patents and