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While traditional lock-and-key systems have improved over time, the basic mechanism hasn’t really changed since the first lock was invented more than a thousand years ago: A piece of metal that is just the right shape pushes pins inside a lock into…

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How Does a Fuel Level Sensor Work? Sensors are a crucial part of most vehicles, especially when determining the fuel level in automobiles and aircraft. Whilst running out of fuel might be inconvenient and costly when driving an automobile, in an…

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