U.s. Customary System
U.s. Customary System - Related Videos
16:21
Quantifying Fish Swimming Behavior in Response to Acute Exposure of Aqueous Copper Using Computer Assisted Video and Digital Image Analysis
0 Views •
Cited by 29 •
2016
Measuring the impacts of environmental contaminants on fish behavior is often subjective and challenging particularly when dealing with sublethal endpoints. We describe methods including video technology to quantify swimming behavior of early life stage white sturgeon (Acipenser transmontanus) during and after 96 hr acute exposures to various concentrations of copper.
12:00
An Optimized Protocol for Rearing Fopius arisanus, a Parasitoid of Tephritid Fruit Flies
0 Views •
Cited by 17 •
2011
Fopius arisanus is an egg-larval parasitoid of Tephritid fruit flies that is successfully used in biological control of these important tropical pests. We describe here an optimized protocol for rearing F. arisanus on a small scale using readily available materials.
10:33
Research and Development of High-performance Explosives
0 Views •
Cited by 2 •
2016
Developmental testing of high explosives for military applications involves small-scale formulation, safety testing, and finally detonation performance tests to verify theoretical calculations. This paper will share typical development tests associated with the measurement of detonation velocity and detonation pressure.
06:20
Generation of Warfighter Avatars from Weapon Training Scene Images for Blast Exposure Simulations
0 Views •
Cited by 1 •
2024
A computational framework was developed to automatically reconstruct virtual scenes comprising 3D avatars of soldiers using image and/or video data. The virtual scenes help estimate blast overpressure exposure during weapon training. The tool facilitates a realistic representation of human posture in blast exposure simulations in various scenarios.
12:47
A Technique to Screen American Beech for Resistance to the Beech Scale Insect (Cryptococcus fagisuga Lind.)
0 Views •
Cited by 8 •
2014
Beech bark disease is initiated by feeding activities of the beech scale insect that create fungal entry points in the bark. Trees that are resistant to the scale insect are also disease resistant. Here we present the protocol we have developed to screen individual beech trees for beech scale resistance.
FAQs
Defined relationships create a consistent structure for expressing measurements at different scales. For length, the relationship between inches and feet lets an engineer represent the same quantity in a more suitable unit without changing its meaning. These relationships support calculations in design and analysis, provided the selected units remain consistent throughout the work.
Conversion factors allow measurements to move between related units or into the International System of Units. An engineer can use them to translate a value while preserving the measured quantity, such as changing a length from inches to feet. Accurate factors are essential when projects combine standards, specifications, or calculations written in different measurement systems.
Dimensional analysis checks whether the units in a calculation combine logically and remain consistent with the intended result. It can reveal an incorrect unit choice or an incomplete conversion before the result is applied. This provides a practical verification step for engineering calculations involving quantities such as length, force, mass, volume, or temperature.
First identify the quantity being measured and the unit required by the calculation or specification. Next apply the appropriate conversion factor, keeping track of the original and resulting units. Finally, use dimensional analysis to verify consistency and inspect the converted value. This workflow supports accurate communication when engineering work must meet International System of Units requirements.
Its continued relevance is strongest in construction, manufacturing, product design, and infrastructure that follow U.S. standards. Engineers working in these areas may need to interpret specifications, perform calculations, and communicate dimensions using customary units. Correctly handling those measurements helps align designs and physical work with the standards governing a particular project.
Engineering projects may use U.S. standards internally while also requiring communication or analysis in the International System of Units. Engineers therefore need to recognize the original customary units, convert them accurately, and verify the resulting calculations. This dual-system capability supports collaboration, reduces misunderstandings, and improves compatibility when designs or technical information cross national or organizational boundaries.