Did you know that ordinary sand can generate electricity? ☀️⚡
In this video, discover how pure silicon is made from sand, how phosphorus and boron create a PN junction, and how sunlight knocks electrons loose to produce electric current. 🔬
From the first 6% efficient solar cell in 1954 to today’s 25%+ efficient solar panels, this is the science behind green energy—powered by Albert Einstein’s photoelectric effect. 🌍♻️
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