In 1940, a scientist testing a cracked silicon slab uncovered a hidden effect that helped build modern electronics
In 1940, a cracked silicon crystal at Bell Laboratories led Russell Ohl to discover the p-n junction, a pivotal moment for electronics. Strange current jump on a fractured piece of silicon opened the door to solar cells. Image credit – Wikimedia In 1940, a cracked silicon crystal at Bell Laboratories led Russell Ohl to discover…