9.2 Using Electricity 

Success Criteria:

Fun Fact

Did you know that the invention of the semiconductor diode, one of the fundamental components in modern electronics, played a crucial role in the development of radar during World War II?

Semiconductor diodes were essential in the creation of crystal radio detectors, which were used in early radar systems. These detectors allowed radar systems to convert radio frequency signals into audio signals, enabling operators to identify the presence of incoming enemy aircraft.

Learning Tasks

• 9.2 key knowledge questions p.264

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