Medical Physics at Medical University Varna | Flashcards & Summaries

Lernmaterialien für Medical Physics an der Medical University Varna

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the heart

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- sustains blood circulation

- can be modelled as a twin compression/suction pump

- the cardiac cycle has 3 main phases:

> Diastole (relaxation)

> Systole (contraction)

> Pause

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The electric dipole

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A system of 2 equal point charges of opposite sign positioned at some distance from ech other.

- Electric dipole is characterised by its dipole moment (a vector)

> magnitude: p=qL

> direction: from the negative toward positive charge

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Acoustic Spectrum

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info about the frequencies and intensities of all harmonic oscillations, comprising the sound wave

- can be represented graphically or as a tabel

- various sounds have different acoustic spectra

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Pressure

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Force, acting upon unit area

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Forces and Torques on a Dipole

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- in a homogenous electric field the dipole is:

-> aligned along a field line

- in a heterogenous e. f. the dipole is:

-> aligned along a field line 

-> drawn into the area of stronger field

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polarisation

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the displacement of charged particles in dielectrics (insulators) by an external electric field

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Ionization potential

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the energy transferred from the ionizing agent to a bonded electron to break the bond with the nucleus and free the electron

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the Limb leads of Eithoven - Lead (Ableitungen)

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- the potential difference between 2 sites on the skin

- the lead signal is determined by the projection of the dipole moment of the heart on the line passing through the 2 sites which define the heart

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Electromotive force

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the work of the external agent for moving a unit positive charge along the conductor 

* the electrical field in the conductor is created by external agents: 

- chemical

- thermal

- mechanical

- radiant

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Electrocardiogramm

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a graphic recording of the changes occuring in the biopotentials of the heart over time

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Electric current

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the directional movement of electric charge

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Electrolytes (ionic solution)

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substance with ionic conductance (the charge carriers are positive and negative ions)

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  • 14617 Karteikarten
  • 137 Studierende
  • 4 Lernmaterialien

Beispielhafte Karteikarten für deinen Medical Physics Kurs an der Medical University Varna - von Kommilitonen auf StudySmarter erstellt!

Q:

the heart

A:

- sustains blood circulation

- can be modelled as a twin compression/suction pump

- the cardiac cycle has 3 main phases:

> Diastole (relaxation)

> Systole (contraction)

> Pause

Q:

The electric dipole

A:

A system of 2 equal point charges of opposite sign positioned at some distance from ech other.

- Electric dipole is characterised by its dipole moment (a vector)

> magnitude: p=qL

> direction: from the negative toward positive charge

Q:

Acoustic Spectrum

A:

info about the frequencies and intensities of all harmonic oscillations, comprising the sound wave

- can be represented graphically or as a tabel

- various sounds have different acoustic spectra

Q:

Pressure

A:

Force, acting upon unit area

Q:

Forces and Torques on a Dipole

A:

- in a homogenous electric field the dipole is:

-> aligned along a field line

- in a heterogenous e. f. the dipole is:

-> aligned along a field line 

-> drawn into the area of stronger field

Mehr Karteikarten anzeigen
Q:

polarisation

A:

the displacement of charged particles in dielectrics (insulators) by an external electric field

Q:

Ionization potential

A:

the energy transferred from the ionizing agent to a bonded electron to break the bond with the nucleus and free the electron

Q:

the Limb leads of Eithoven - Lead (Ableitungen)

A:

- the potential difference between 2 sites on the skin

- the lead signal is determined by the projection of the dipole moment of the heart on the line passing through the 2 sites which define the heart

Q:

Electromotive force

A:

the work of the external agent for moving a unit positive charge along the conductor 

* the electrical field in the conductor is created by external agents: 

- chemical

- thermal

- mechanical

- radiant

Q:

Electrocardiogramm

A:

a graphic recording of the changes occuring in the biopotentials of the heart over time

Q:

Electric current

A:

the directional movement of electric charge

Q:

Electrolytes (ionic solution)

A:

substance with ionic conductance (the charge carriers are positive and negative ions)

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