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What is a characteristic of mechanical waves?
What type of wave is a sound wave?
What is the speed of electromagnetic waves in a vacuum?
What is a characteristic of longitudinal waves?
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What is the relationship between two inversely proportional parameters?
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What is a key parameter to consider in sound waves?
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What type of wave requires an initial vibration from a source object?
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What is the direction of particle displacement in transverse waves?
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What determines the speed of mechanical waves?
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What is a characteristic of electromagnetic waves?
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What is the primary characteristic that distinguishes sound waves from electromagnetic waves?
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What is the term for the increase in pressure or density in a sound wave?
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What is the result of a vibration occurring in a medium?
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What is the direction of the displacement of the medium in a longitudinal wave?
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What is the term for the decrease in pressure or density in a sound wave?
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What is the year in which the clinical adoption of ultrasound commenced in Glasgow?
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What is the term for the transfer of energy from one location to another without physical contact between the points?
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What is the nature of the intermolecular forces that connect molecules in a medium?
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What is the term for a disturbance or fluctuation that transfers energy from one location to another within a medium?
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Who pioneered the use of B-mode ultrasound for brachial plexus blockade procedures?
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What was the primary motivator for the advancement of SONAR technology?
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Who identified the piezoelectric effect, which is foundational for later ultrasound technology?
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What was the significant outcome of Langevin's utilization of piezoelectric principles?
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When did the medical industry start experimenting with ultrasound for medical purposes?
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What was the subject of Dussik's pioneering study published in 1942?
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What was the significant development in ultrasound technology that marked a new era in medical imaging?
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When did institutions worldwide develop pulsed ultrasound technology?
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What was the significant outcome of the development of pulsed ultrasound technology?
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Who explored the concept of sound beyond the audible spectrum?
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What was the significant development in ultrasound technology that expanded with the advent of 3D and 4D imaging?
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Study Notes
Sound Waves
- Sound is a form of energy generated through vibration, transmitting energy from one location to another.
- Sound waves are characterized by alternating compressions and rarefactions, requiring a medium (solid, liquid, or gas) to propagate.
- Compressions signify an increase in pressure or density, while rarefactions occur during the troughs of the sound wave.
Types of Waves
- Mechanical Waves: defined by the disturbance of a physical medium, examples include ocean waves, sound waves, and seismic waves.
- Electromagnetic Waves (transverse wave): do not require a medium and can propagate through a vacuum, examples include radio waves, X-rays, and light.
Wave Classification
- Longitudinal Waves: particle displacement occurs parallel to the wave's direction of energy movement, requires a material for wave travel, and speed depends on the type and state of the medium.
- Transverse Waves: particle displacement occurs perpendicular to the wave's direction of propagation, velocity is relatively constant at approximately 299,792.456.2 m/s in a vacuum.
Ultrasound Technology
- 1794: Spallanzani explored sound beyond the audible spectrum.
- 1912: The Curie brothers identified the piezoelectric effect, foundational for later ultrasound technology.
- 1917: World War I's naval warfare spurred the advancement of SONAR technology.
- Late 1940s: Diagnostic uses for ultrasound started to emerge, marking a new era in medical imaging.
- 1950: Clinical adoption of ultrasound commenced in Glasgow, paving the way for broader medical applications.
- 1965: Advancements made real-time ultrasound imaging feasible.
- 1980s: The medical industry began experimenting with ultrasound for medical purposes.
- 1990s: Institutions worldwide developed pulsed ultrasound technology, leading to 'B Mode' imaging.
- 1994: Steven Kapral and his team pioneered the use of B-mode ultrasound for brachial plexus blockade procedures.
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Description
This quiz covers the history of ultrasound technology, from its clinical adoption in the 1950s to advancements in the 1980s and 1990s.
