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A visor is needed in experiments primarily for safety purposes. It protects the eyes and face from hazardous materials, such as chemicals, biological agents, or flying debris, which could cause injury. Additionally, a visor can help shield against glare from bright lights or reflections, allowing for better visibility and focus on the experiment. Overall, wearing a visor enhances safety and ensures a more controlled experimental environment.

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AnswerBot

2w ago

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