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Accuracy and Precision01:52

Accuracy and Precision

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Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.  Highly accurate...
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Uncertainty in Measurement: Accuracy and Precision03:37

Uncertainty in Measurement: Accuracy and Precision

111.1K
Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. 
111.1K
Rules for Significant Figures01:44

Rules for Significant Figures

41.0K
In any measurement, the precision of the measuring tool is an essential factor. An ordinary ruler, for example, can measure length to the closest millimeter; a caliper, on the other hand, can measure length to the nearest 0.01 mm. As a result, the caliper is a more precise measurement tool because it can measure extremely minute changes in length. The measurements will be more accurate if the measuring tool is more precise.
It should be emphasized that when we represent measured values, the...
41.0K
Uncertainty in Measurement: Reading Instruments02:46

Uncertainty in Measurement: Reading Instruments

54.6K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
54.6K
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

572
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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Uncertainty in Measurement: Significant Figures03:34

Uncertainty in Measurement: Significant Figures

84.8K
All the digits in a measurement, including the uncertain last digit, are called significant figures or significant digits. Note that zero may be a measured value; for example, if a scale that shows weight to the nearest pound reads “140,” then the 1 (hundreds), 4 (tens), and 0 (ones) are all significant (measured) values.
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Updated: Feb 24, 2026

Picometer-Precision Atomic Position Tracking through Electron Microscopy
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Computación de alta precisión en el sensor alcanzando hasta 10 bits

Linqi Guo1, Haoxuan Sun1, Siping Yang1

  • 1School of Physical Science and Technology, Jiangsu Key Laboratory of Frontier Material Physics and Devices, Suzhou Key Laboratory of Intelligent Photoelectric Perception, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, China.

Advanced materials (Deerfield Beach, Fla.)
|February 22, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un nuevo dispositivo de computación en el sensor con una precisión de 10 bits, superando los límites de reconfigurabilidad para aplicaciones inteligentes. Este avance permite el procesamiento avanzado de imágenes y la óptica reconstruida, allanando el camino para los sistemas inteligentes de próxima generación.

Palabras clave:
espectrómetro de hardware completocomputación en el sensorsinapsis optoelectrónicaperovskita

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Área de la Ciencia:

  • Ciencia de los materiales
  • Ingeniería informática
  • Nanotecnología

Sus antecedentes:

  • La creciente demanda de aplicaciones centradas en datos e inteligentes requiere la integración de sensores, memoria y computación.
  • La computación en el sensor ofrece eficiencia y procesamiento en tiempo real, pero enfrenta limitaciones de reconfigurabilidad para tareas complejas.
  • La conmutación en cascada debido a interacciones de dominio dificulta la reconfiguración precisa en los dispositivos actuales.

Objetivo del estudio:

  • Superar la barrera de reconfigurabilidad en la computación en el sensor.
  • Desarrollar un novedoso dispositivo de computación en el sensor con alta precisión de reconfiguración.
  • Demostrar la capacidad del dispositivo en el procesamiento avanzado de imágenes y la óptica reconstruida.

Principales métodos:

  • Se introdujo una estrategia de enfoque de energía de polarización utilizando composiciones de materiales ferroeléctricos y semiconductores a medida.
  • Se diseñó la distribución del material para gestionar las interacciones entre dominios de polarización diferente.
  • Se desarrolló el primer dispositivo de computación en el sensor que logra una precisión reconfigurable de 10 bits.

Principales resultados:

  • Se logró una precisión reconfigurable récord de 10 bits en un dispositivo de computación en el sensor.
  • Se demostró la aplicación exitosa en tareas convencionales de procesamiento de imágenes.
  • Se exhibieron capacidades avanzadas en aplicaciones de óptica reconstruida.

Conclusiones:

  • La estrategia de enfoque de energía de polarización supera eficazmente las barreras de conmutación en cascada.
  • El dispositivo desarrollado representa una plataforma de alta linealidad y alta precisión para sistemas inteligentes.
  • Este avance tiene un potencial significativo para las aplicaciones de computación y detección inteligentes de próxima generación.