Direction Measurement
Direction Measurement - Related Videos
01:23
Microbial Growth Measurement: Direct Methods
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2025
Direct methods for measuring microbial populations in a culture are essential tools in microbiology, providing quantitative data for various applications. Among these, microscopic counts, plate counts, and serial dilution are widely used techniques, each with unique principles and applications.Microscopic CountsMicroscopic counting involves the use of a Petroff-Hausser chamber, a specialized microscope slide with a grid and defined depth. By observing a liquid culture under a microscope,...
11:57
Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
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Cited by 5 •
2013
We present a non-destructive method for sampling spatial variation in the direction of light scattered from structurally complex materials. By keeping the material intact, we preserve gross-scale scattering behavior, while concurrently capturing fine-scale directional contributions with high-resolution imaging. Results are visualized in software at biologically-relevant positions and scales.
09:56
Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
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Cited by 14 •
2021
Here, we present a protocol to investigate the intracellular mechanical properties of isolated embryonic zebrafish cells in three-dimensional confinement with direct force measurement by an optical trap.
10:39
Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Cited by 10 •
2016
The measurement protocol and data analysis procedure are given for obtaining transverse coherence of a synchrotron radiation X-ray source along four directions simultaneously using a single 2-D checkerboard phase grating. This simple technique can be applied for complete transverse coherence characterization of X-ray sources and X-ray optics.
06:26
Direct Linear Transformation for the Measurement of In-Situ Peripheral Nerve Strain During Stretching
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Cited by 3 •
2024
This protocol implements a stereo-imaging camera system calibrated using direct linear transformation to capture three-dimensional in-situ displacements of stretched peripheral nerves. By capturing these displacements, strain induced at varying degrees of stretch can be determined informing the stretch injury thresholds that can advance the science of stretch-dependent nerve repair.
FAQs
A measured orientation has meaning only when engineers specify the axes or reference direction used for comparison. The same line or moving object can produce different angle, bearing, heading, or vector-component values when evaluated against different reference frames. Establishing that frame allows navigation, alignment, surveying, and machine-control systems to interpret orientation consistently and coordinate their actions.
Engineers can represent orientation as an angle, bearing, heading, or vector component, depending on the task and system design. Angles support alignment, bearings and headings support navigation, and vector components describe directional contributions along selected axes. Choosing an appropriate representation helps connect sensor measurements with positioning, control, mapping, or structural-analysis requirements.
Compasses, gyroscopes, encoders, and optical devices provide alternative ways to obtain orientation information. Their measurements are interpreted by comparing signals with reference axes, rather than treating a raw signal as universally meaningful. This makes sensor selection part of system design, because the required output may concern navigation, mechanical alignment, motion, or geospatial positioning.
Orientation errors can propagate into the operation of a larger engineered system. In navigation and mapping, they can affect positioning; in structural or machine applications, they can reduce alignment quality; and in moving systems, they can influence stability and control. Reliable comparison with reference axes therefore supports consistent operation across measurement, guidance, and alignment tasks.
First, engineers establish the reference frame and identify the line, vector, or moving object whose orientation matters. They then select a suitable sensor, obtain measurements, compare those signals with the reference axes, and express the result as an angle, bearing, heading, or vector component. The resulting orientation information can then guide navigation, alignment, mapping, or machine operation.
The method supports navigation, surveying, robotics, structural alignment, machine control, and geospatial mapping. In robotics and machine control, orientation information helps systems operate relative to intended axes. Surveying and mapping use directional relationships to represent engineered or geographic layouts, while structural alignment depends on orientation information to position components consistently within a design or reference frame.