The process of connecting electrical equipment to the earth for safety, or providing someone with basic knowledge or principles in a subject. Can also refer to the punishment of restricting someone's activities.
From Old English grund meaning 'bottom' or 'foundation'. The electrical sense developed in the 19th century with the advancement of electrical systems, while the educational meaning evolved from the idea of establishing a firm foundation of knowledge.
Grounding serves as both a literal safety mechanism in electricity and a metaphorical foundation in learning - both prevent dangerous 'overloads' by providing a stable base. The concept beautifully illustrates how physical and intellectual safety often require the same principle: connection to something solid and reliable.
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