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Related Concept Videos

Velocity and Position by Graphical Method01:34

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Velocity and position can be calculated from the known function of acceleration as a function of time. The total area under the acceleration-time graph and the velocity-time graph gives the change in velocity and position, respectively. In the case of an airplane, its acceleration is tracked using the inertial navigation system. The pilot provides the input of the airplane's initial position and velocity before takeoff. The inertial navigation system then uses the acceleration data to...
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When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. This property of fluids is called fluid viscosity. In this example, water has a lower viscosity than honey and maple syrup.
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Relative velocity is the velocity of an object as observed from a particular reference frame, or the velocity of one reference frame with respect to another reference frame. The concept of relative velocity can be used to describe motion in two dimensions. Consider a particle P and two reference frames S and S′. The position of the origin of S′ as measured in S is , the position of P as measured in S′ is , and the position of P as measured in S is , which can be evaluated by...
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Viscosity measures the resistance a fluid offers to flow and deformation. It results from internal friction between layers of fluid moving relative to one another. Dynamic viscosity, denoted by the Greek letter mu (μ), quantifies the force needed to move one fluid layer over another. For Newtonian fluids like water and air, the relationship between the shearing stress and the rate of shearing strain is linear, meaning their viscosity remains constant regardless of the applied stress.
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Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of displacement with respect to time. Like average velocity, the instantaneous velocity is a vector with the dimensions of length per unit time. Instantaneous velocity can have both positive and negative values. The instantaneous velocity can be...
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The understanding of the concept of reference frames is essential to discuss relative motion in one or more dimensions. When we say that an object has a certain velocity, we must state the velocity with respect to a given reference frame. In most examples, this reference frame has been Earth. For instance, if a statement reads that a person is sitting in a train moving at 10 m/s east, then it implies that the person on the train is moving relative to the surface of Earth at this velocity,...
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Updated: Jun 5, 2025

Using High Resolution Computed Tomography to Visualize the Three Dimensional Structure and Function of Plant Vasculature
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QuickVol: A lightweight browser tool for immersive visualizations of volumetric data.

Maxim Kuznetsov1,2, Mircea Teodorescu2,3, Mohammed A Mostajo-Radji2

  • 1Department of Computational Media, University of California Santa Cruz, Santa Cruz, CA, USA.

Iscience
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Summary

QuickVol offers rapid, easy visualization of volumetric data without downloads. This system works offline on any browser, even for virtual reality viewing.

Keywords:
Applied sciencesComputer scienceSoftware engineering

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Area of Science:

  • Computer Science
  • Data Visualization
  • Scientific Computing

Background:

  • Volumetric data visualization is crucial across many scientific fields.
  • Existing tools often have steep learning curves and require extensive setup.
  • This poses a barrier for students and new researchers.

Purpose of the Study:

  • To develop a system for rapid, accessible volumetric data visualization.
  • To eliminate the need for dedicated software downloads and complex installations.
  • To provide an intuitive platform for showcasing volumetric datasets.

Main Methods:

  • Developed QuickVol, a WebGL-based visualization system.
  • Ensured cross-browser compatibility, including mobile and offline functionality.
  • Integrated experimental hand-tracking for immersive, hands-free manipulation.
  • Included a virtual reality (VR) headset showcase mode.

Main Results:

  • QuickVol enables immediate viewing of volumetric data on modern web browsers.
  • The system functions offline, removing setup barriers.
  • Hand-tracking and VR modes offer novel interaction and presentation methods.

Conclusions:

  • QuickVol democratizes volumetric data visualization for a wider audience.
  • The system lowers the barrier to entry for scientific data exploration.
  • Future work can expand immersive features and data type support.