SOME GENERAL MEASUREMENT CONCEPTS The measurement exists in some context We want to do this measurement because The context (and objective shapes the measurement strategy and tactics [ Begin with the end in mind"Steven Covey You generally do not directly measure the quantity you want Most measurement devices are systems which translate the measured quantity(voltage, for example) into the quantity you want (pressure) All measurements have some uncertainty, or error, connected with them It is important to know not only the result of the measurement but also the fidelity of the result (how big is the uncertainty, how much can I trust the answer?)SOME GENERAL MEASUREMENT CONCEPTS • The measurement exists in some context – We want to do this measurement because……. • The context (and objective) shapes the measurement strategy and tactics [“Begin with the end in mind”- Steven Covey] • You generally do not directly measure the quantity you want – Most measurement devices are systems which translate the measured quantity (voltage, for example) into the quantity you want (pressure) • All measurements have some uncertainty, or error, connected with them – It is important to know not only the result of the measurement but also the fidelity of the result (how big is the uncertainty, how much can I trust the answer?) 4