Wed, 11/08/2006 - 22:00
This is the first “Measurement Matters,” a column that will show how much measurement matters in achieving and maintaining quality, especially in manufacturing. I will cover topics such as types of measurements and measurement devices, how…
Wed, 10/11/2006 - 22:00
Usually, when people discuss measurements they speak in absolute terms—degrees of temperature, millimeters of length, ounces of weight, candela of illumination intensity, degrees of angle, etc. For example, when I say the temperature is 56.4° F,…
Wed, 09/13/2006 - 22:00
No, this isn’t about promises you made on New Year’s Eve and broke the next day. It’s about measurement resolution—the number of decimal places to which a measured value is calculated and presented. The measurement can be of any parameter—voltage,…
Wed, 08/09/2006 - 22:00
Many people know about William Tell shooting the apple on his son’s head. What can this archery event teach us about accuracy and precision? What do these words mean? When are they equal, and when are they not? “Accuracy,” “precision” and “…
Wed, 07/12/2006 - 22:00
Measurements add value to the parts you manufacture. That may not be a widely accepted position, because the act of measuring is an additional step in the manufacturing sequence, and every step has a cost associated with it. With pressure to reduce…