In magnetic particle inspection, which type of light is used to view indications?

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Multiple Choice

In magnetic particle inspection, which type of light is used to view indications?

Explanation:
In magnetic particle inspection, indications are made visible by lighting the fluorescent particles with ultraviolet light, commonly called black light. The UV light excites the fluorescent particles so they emit visible light, producing bright indications against a dark background and allowing you to see surface and near-surface flaws clearly. This method is highly sensitive for detecting tight or small defects. Using white light is for non-fluorescent particles, and infrared light isn’t used to view MPI indications. Remember to work in a darkened area and follow safety precautions for UV exposure.

In magnetic particle inspection, indications are made visible by lighting the fluorescent particles with ultraviolet light, commonly called black light. The UV light excites the fluorescent particles so they emit visible light, producing bright indications against a dark background and allowing you to see surface and near-surface flaws clearly. This method is highly sensitive for detecting tight or small defects. Using white light is for non-fluorescent particles, and infrared light isn’t used to view MPI indications. Remember to work in a darkened area and follow safety precautions for UV exposure.

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