Phil Elmore
Master of Arts
- Joined
- Mar 30, 2002
- Messages
- 1,514
- Reaction score
- 54
As some of you know, I am a professional technical writer and have been for a decade. Among the industrial equipment about which I have written (on top of and under which I have climbed, behind which I have dodged to avoid forklifts, and around which I have hastened to take illustrative photos) are the machines that make and inspect glass bottles. I know far more about the making of glass bottles than is necessary for any human being to know.
You flashlight gearheads may be interested to know that one of the ways such bottles are inspected for defects is to strobe a bank of LEDs so a camera and computer can analyze the images that result. A bottle is analyzed for two different types of defects -- dimensional defects, which are flaws in the shape of the bottle, and sidewall defects, which are flaws in the glass itself (inclusions, "birdswings" of glass that stretch across the interior, etc.).
My lovely wife was taking a Snapple from the refrigerator the other day when she showed me the glass bottle. I got all excited. "Hey, this is a dimensional defect! This bottle should have been culled at the factory! It never should have made it through!"
How she does not think me insane I could not say, given that this type of behavior is not all that uncommon for me.
Dimensional defect in glass Snapple bottle
You flashlight gearheads may be interested to know that one of the ways such bottles are inspected for defects is to strobe a bank of LEDs so a camera and computer can analyze the images that result. A bottle is analyzed for two different types of defects -- dimensional defects, which are flaws in the shape of the bottle, and sidewall defects, which are flaws in the glass itself (inclusions, "birdswings" of glass that stretch across the interior, etc.).
My lovely wife was taking a Snapple from the refrigerator the other day when she showed me the glass bottle. I got all excited. "Hey, this is a dimensional defect! This bottle should have been culled at the factory! It never should have made it through!"
How she does not think me insane I could not say, given that this type of behavior is not all that uncommon for me.
Dimensional defect in glass Snapple bottle