Engineering Drawings
Engineering Drawings - Related Videos
11:57
Fabricating Metamaterials Using the Fiber Drawing Method
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Cited by 23 •
2012
Metamaterials at terahertz frequencies offer unique opportunities, but are challenging to fabricate in bulk. We adapt the fabrication procedure for microstructured polymer optical fibers to inexpensively fabricate metamaterials potentially on an industrial scale. We produce polymethylmethacrylate fibers containing ~10 μm diameter indium wires separated by ~100 μm, which exhibit a terahertz plasmonic response.
05:27
Drawing Blood from Rats through the Saphenous Vein and by Cardiac Puncture
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Cited by 91 •
2007
Blood draws are necessary in a large number of studies, for example to study the pharmacokinetics profile of a compound. Here, we demonstrate how to draw blood from rats using two techniques: blood draw from the saphenous vein or by cardiac puncture.
06:22
Motor Learning in Mirror Drawing
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Colloquially, the terms learning and memory encompass a broad range of behaviors and mental systems, everything from learning to tie a shoe to mastering calculus (and a lot in between). Experimental psychologists have divided up learning mechanisms into groups that seem to have different properties, and that seem to rely on different brain systems. A major division is between declarative and non-declarative memory, roughly, the...
01:16
Drawing Free-body Diagrams: Rules
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2023
The first step in describing and analyzing most phenomena in physics involves the careful drawing of a free-body diagram. Free-body diagrams are useful in analyzing forces acting on an object or system, and are employed extensively in the study and application of Newton's laws of motion. The steps to draw a free-body diagram are listed below: • Draw the object under consideration. If treating the object as a particle, represent the object as a point. Place this point at the origin of a...
07:53
Group Synchronization During Collaborative Drawing Using Functional Near-Infrared Spectroscopy
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Cited by 5 •
2022
The present protocol combines functional near-infrared spectroscopy (fNIRS) and video-based observationto measure interpersonal synchronization in quartets during a collaborative drawing task.
FAQs
Orthographic projection applies geometric relationships to represent a three-dimensional object on two-dimensional surfaces. It allows spatial features to be communicated through mathematically related views rather than relying on visual perspective alone. This approach helps designers, manufacturers, and inspectors interpret the object’s form consistently and compare its represented geometry with intended construction requirements.
Scale connects the dimensions shown on a drawing with the corresponding dimensions of the physical object. Proportional reasoning ensures that features maintain consistent relationships when the representation is enlarged or reduced. These mathematical controls let users interpret size accurately while keeping the drawing practical for design communication, construction, and manufacturing.
Dimensioning assigns measurable values to geometric features, while tolerancing communicates the permitted limits associated with those requirements. Together, they turn a visual representation into a specification that can guide construction and inspection. Their mathematical precision helps determine whether a manufactured component or built system conforms to the intended design.
Geometric construction organizes lines, angles, curves, and other forms through explicit mathematical relationships. Coordinates add a positional framework by identifying where features occur relative to one another. Used together, these tools reduce ambiguity in complex shapes and support consistent interpretation when an object must be designed, produced, inspected, or discussed by different technical teams.
A practical workflow begins by analyzing the three-dimensional form, selecting an appropriate two-dimensional representation, and applying geometric construction to show its features. The creator then uses scale, coordinates, dimensioning, and tolerancing to communicate size, location, and functional requirements. Reviewing these elements together helps ensure that the final document conveys the intended object accurately.
They are especially useful when several people must produce or evaluate the same physical object from shared specifications. Manufacturing uses the stated geometry, measurements, and functional requirements to guide construction, while inspection compares the resulting component with those specifications. This shared mathematical language supports technical collaboration and helps identify whether the intended design has been met.
Engineering drawings provide practical exercises in geometry, measurement, proportional reasoning, and spatial visualization. Learners can connect abstract mathematical relationships with the representation of three-dimensional forms on two-dimensional surfaces. This context shows how coordinates, scale, geometric construction, dimensioning, and tolerancing contribute to precise communication beyond classroom calculations.