How It's Made: Optical Lenses

This is a step-by-step process in producing common optical lenses.

It is a great honor to see this video featured on How-To Geek:
http://www.howtogeek.com/news/how-its-made-optical-lenses-video/5612/

Category:

Science & Technology

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• lenses
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[dx80cruiser]

No cheap and easy way to make a high quality lens.

[nonosh]

@dx80cruiser Indeed.

[GeezerRay]

Nice.

"2.2 pounds"? Can't Americans figure out what a kilogram is yet?

[nonosh]

@GeezerRay This episode was most likely narrated with a script that accomodates the ordinary TV viewers in the United States. Metric standards are not used here much outside of academia; I suppose Americans can't immediately infer how a kilogram feels while looking at a particular object on the screen.

[Aragiss]

@GeezerRay Yeah I hate the damn Imperial units. I mean the whole world uses metric, they're much more convenient and scientific. Why do those idiots still use those archaic measurement units?!

[nonosh]

@Aragiss Metric follows a very logical hierarchy indeed, but it may pose as a challenge if, one day, students are to reference past governmental reports/document for their research. Many years of scientific documentation in our public sector have rendered the U.S. system ubiquitous. Well, I suppose this just means that we should leave it to the motivated independent organizations to advance our scientific dreams (pardon my fallacious judgment).

[XionXi]

Interesting stuff. I've always admired manufacturers. The average person doesn't even think about this sort of thing.

[MrDjpatres]

Please know someone name of the song playing 5:20? beautiful and soothing

[tammyz10]

Much prefer barnsey doing the voiceover in the UK.

[TheBandScanner]

Very surprised at the sections showing percision handlers without hair nets.

[jannoelparedes]

wow...... so perfect

[Gunner3210]

@GeezerRay Or at least they should have mentioned the per pound price.

[Aragiss]

@TheMarkNessMonster I don't know when they were made. By "archaic" I meant, obsolete. Whatever, this discussion has got way too long and i'm rather bored with it. BB

[TheMarkNessMonster]

@Aragiss One last thing, calling Imperial measurements archaic by comparison to metric measurements is like calling cubits archaic in comparison to bushels, which is a measurement still used today. Metric was invented in April 1795, so by any standard, neither is any less archaic. Enjoy not understanding my archaic measuring system, while I enjoy using both archaic measuring systems. Also, science has MANY systems of msmts. I mean, you wouldn't measure electricity in cm, now would you?

[TheMarkNessMonster]

@Aragiss I understand perfectly, and I am able to understand and apply both fluently, which is more than I can say for yourself.