Which effect indicates degraded fringe visibility during optical interferometry?

💡 Explanation

Reduced fringe visibility signifies diminished interference contrast because the beams' path length difference exceeds the source's coherence length, weakening constructive interference, therefore visibility decreases rather than enhanced diffraction which relates to object edges.

• Which outcome reduces magnetic susceptibility when a crystal lattice compresses?
• Which symptom arises when anisotropic material stresses hinder polarized light microscopy?
• Which outcome occurs when high exhaust velocity is needed within a spacecraft thruster's limited expansion volume?
• Which outcome inhibits current flow when nanoscale electronic components shrink, leveraging quantum tunneling?
• Which consequence results when steric hindrance obstructs antibonding orbitals?
• Which outcome occurs when applying excessive back-EMF, due to a sudden reduction in motor load, to a capacitor-shunted DC motor's circuit?