Conductor, insulator and semi-conductors

Veritasium on Instagram: "Why It Was Almost Impossible To Make The Blue LED - Part 2 Band gaps and energy levels explained! Part 3 coming soon… Hosted by Derek Muller Written by @emilylinzhang, Ricky Nathvani and Derek Muller Directed by @emilylinzhang #science #veritasium #physics #engineering #light #blueled #led #blue #electron #bandgap" instagram.com

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