Mindblown: a blog about philosophy.
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Rotary converter
The primary purpose of this apparatus is to convert direct current into alternating current, enabling the operation of X-ray machinery through a power source derived from a storage battery.
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Root-mean-square value
The root mean square (rms) is the square root of the average of the squares of a series of related values. In the context of alternating current, the rms value corresponds to the direct-current value that would generate an equivalent heating effect. For a sine wave, the rms value is 0.707 times the peak value.…
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Wilhelm C Roentgen
On November 8, 1895, Dr. Wilhelm Conrad Roentgen, a physicist, made the discovery of x-rays while observing the effects of a high-voltage Crookes vacuum tube. He noticed that a nearby piece of barium platinocyanide emitted a glow in the dark. Dr. Roentgen is widely recognized as the father of x-ray technology.
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Roentgenography
Photography accomplished using roentgen rays is referred to as roentgenography. The terms roentgenography and radiography are often used interchangeably as they essentially convey the same meaning. Capturing images using X-rays, also known as radiography or skiagraphy.
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Roentgen equivalent physical
The rad is a unit of measurement for ionizing radiation, representing the amount that leads to the absorption of 93 ergs of energy per gram of soft tissue. It is also known as the equivalent roentgen.
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Electrical ripple
Rectified ripple refers to the variation in magnitude of the rectified current from the peak to the trough of a sine wave. In a single-phase system, there is a 100 percent rectified ripple. In a six-pulse system, the ripple is approximately 13.5 percent, while in a 12-pulse three-phase system, the ripple reduces to approximately 3.5…
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Right-hand rule
This rule is commonly referred to as the motor rule. According to the motor rule, if the thumb and the first two fingers of the right hand are positioned at right angles to one another, with the index finger indicating the direction of the magnetic field and the middle finger representing the direction of the…
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Rhombic grid
The utilization of a rhombic pattern, characterized by a crosshatch effect, restricts the possibility of tube angulation. However, it should be noted that this type of pattern is currently unavailable in the market as it is not being manufactured at present.
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Resolution target
A testing device that employs line pairs to assess the level of radiographic sharpness.
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Ultrasound resolution
The ability to discern two objects as separate and distinct entities is known as resolution. In the context of ultrasound scanning, two significant terms related to resolution are lateral resolution and axial resolution. These terms are crucial in determining the clarity and precision with which the ultrasound system can differentiate between objects in the lateral…
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