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The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda:
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
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The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
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In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
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Angle of Twist - Elastic Range01:13

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Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
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Range Rule of Thumb to Interpret Standard Deviation01:13

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The range rule of thumb in statistics helps us calculate a dataset's minimum and maximum values with known standard deviation. This rule is based on the concept that 95% of all values in a dataset lie within two standard deviations from the mean.
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Consider a scenario where a circular shaft is subject to torque that remains within the boundaries of Hooke's Law, avoiding any permanent deformation. So, the formula for shearing strain is revisited. This formula is multiplied by the modulus of rigidity, and then Hooke's Law for the shearing stress and strain is applied. As a result, the equation for shearing stress in a shaft can be derived.
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Medición del rango del microcombustible de Soliton

Myoung-Gyun Suh1, Kerry J Vahala2

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Resumen
Este resumen es generado por máquina.

Las microcombas de solitón basadas en chips permiten un rango preciso de láser. Esta tecnología logra una precisión de 200 nanómetros para las mediciones de distancia, allanando el camino para los sistemas de alcance láser en miniatura.

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Área de la Ciencia:

  • Óptica y fotónica
  • Metrología

Sus antecedentes:

  • La medición de alcance basada en láser es crucial para aplicaciones como vehículos autónomos y vuelos en formación de satélites.
  • El alcance coherente del láser con peines de doble frecuencia ofrece largo alcance, alta precisión y actualizaciones rápidas.

Objetivo del estudio:

  • Para demostrar la medición de la distancia de doble peine utilizando microcombas de solitón basadas en chips.
  • Desarrollar un sistema de alcance láser compacto e integrado de doble peine.

Principales métodos:

  • Generación de peines de doble frecuencia como solitones de contrapropagación dentro de un solo microrresonador utilizando un solo láser de bomba.
  • Medición del tiempo de vuelo para la determinación de la distancia.

Principales resultados:

  • Logró una precisión de 200 nanómetros con un tiempo de medición de 500 milisegundos con una ambigüedad de rango de 16 milímetros.
  • Se han demostrado mediciones de hasta 25 metros con menor precisión.

Conclusiones:

  • Las microcombas de solitón basadas en chips son una fuente viable para el alcance láser de doble peine.
  • Este trabajo representa un paso importante hacia los sistemas de alcance láser integrados y miniaturizados.