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Beau
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JordanEdge dislocations occur when an extra half-plane of atoms is inserted into the crystal lattice, resulting in a step-like structure, whereas screw dislocations involve shear distortion of the crystal lattice, with the atoms moving along a dislocation line in a spiral fashion. Edge dislocations have a greater impact on the crystal's mechanical properties, such as strength, while screw dislocations are more significant in terms of deformation and plasticity.
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Why edge dislocation moves faster than screw dislocations?
Edge dislocations move faster than screw dislocations because edge dislocations have higher resolved shear stress on their slip plane, allowing them to move more easily through a material. Screw dislocations, on the other hand, require the motion of multiple atoms to move, causing them to move more slowly than edge dislocations.
Where defects can occur in crystal structures?
Defects in crystal structures can occur at various locations, such as point defects (vacancies, interstitials, substitutional impurities), line defects (dislocations), and surface defects (grain boundaries, stacking faults). These defects can influence the physical and chemical properties of the material, including its mechanical strength, electrical conductivity, and optical behavior.
Is there a difference between edge triggering and pulse triggering?
Yes, there is a difference between edge triggering and pulse triggering. Edge triggering occurs when a circuit changes state based on the transition of an input signal (e.g., from low to high or high to low). Pulse triggering, on the other hand, involves triggering a circuit based on the detection of a specific pulse width within the input signal.
Explain how a wedge and a screw are related to the inclined plane?
A wedge is a type of inclined plane that has two inclined surfaces meeting at a sharp edge. The screw is a type of inclined plane wrapped around a cylindrical shaft. Both the wedge and the screw utilize the principle of an inclined plane to multiply force and make it easier to perform tasks like splitting wood with a wedge or holding materials together with a screw.
1 What is the difference between a level triggered clock and an edge triggered clock?
A level-triggered clock responds to the continuous logic level of its input signal (high or low), while an edge-triggered clock responds to a specific transition in the signal (rising or falling edge). This means that a level-triggered clock continuously monitors the input signal level, while an edge-triggered clock only "notices" a change in the signal level at the edge.
