Skip to main content

Why Are Blueprints Blue?

http://gizmodo.com/5953073/why-are-blueprints-blue


If you ever wondered why blueprints were blue and not black or red or white or brown or any other color than blue, well, it's not because architects really like the color but because the technique in making blueprints caused the paper to turn blue.
Mental Floss delved into the history of blueprints and discovered that the blueprint process was developed in the 1800's when scientists found an easy way to reproduce documents by using ammonium iron citrate and potassium ferrocyanide as some sort of old school photocopy. How does that really work? Well, as Mental Floss explains it:
Someone creates a drawing on translucent tracing paper or cloth. The drawing is placed over a piece of blueprinting paper, which has been coated with a mix of ammonium iron citrate and potassium ferrocyanide from an aqueous solution and dried. When the two papers are exposed to a bright light, the two chemicals react to form an insoluble blue compound called blue ferric ferrocyanide (also known as Prussian Blue), except where the blueprinting paper was covered, and the light blocked, by the lines of the original drawing. After the paper is washed and dried to keep those lines from exposing, you're left with a negative image of white (or whatever color the blueprint paper originally was) against a dark blue background.
You see, the chemicals react and makes the paper blue. And back in the day, using this blueprinting technique was obviously faster and more effective than tracing the documents. The blueprint name has stuck ever since. The more you know, right. 



Popular posts from this blog

Taking Tips From a Younger Generation

Phyllis Korkki, an assignment editor at The New York Times, visited the garment district in Manhattan to interview designers as part of a story for the newspaper’s Snapchat account. Credit George Etheredge/The New York Times
What Could I Possibly Learn From A Mentor Half My Age? Plenty.

How on earth did I become an “older worker?”

It was only a few years ago, it seems, that I set out to climb the ladder in my chosen field. That field happens to be journalism, but it shares many attributes with countless other workplaces. For instance, back when I was one of the youngest people in the room, I was helped by experienced elders who taught me the ropes.

Now, shockingly, I’m one of the elders. And I’ve watched my industry undergo significant change. That’s why I recently went searching for a young mentor — yes, a younger colleague to mentor me.

Discounts, Discovery & Delight: 3Ds for Retail Success

In fashion and retail, Dopamine is the drug of choice. Technically, Dopamine is the neurotransmitter of “desire.” Dopamine leaps across synapses in our brain to control our reward and pleasure centers. It enables craving. It induces repeat behaviors. It makes us want more. Therefore, it is in our best interest to create products and experiences which induce the release of dopamine in our consumers. We could use some dopamine for ourselves, too. In our fashion and retail world, there are three primary stimuli, "3Ds," we can control to deliver hits of dopamine: Discounts, Discovery and Delight.

Beware of Wombats & Other Vampires

You are surrounded by dangerous WOMBATS. They’re everywhere. Sometimes they hide in plain sight, easy to spot. Other times they are well camouflaged, requiring heightened awareness to identify them. You need to stay alert, it’s important to avoid them. WOMBATs resemble ordinary, productive tasks. However, they are vampires for time and resources, weapons of mass distraction.WOMBATs are seductive. Working on a WOMBAT feels productive.WOMBATs are bad for your career.WOMBATs are bad for your business.WOMBATs infiltrate your work day (and your personal time). Strike them down.WOMBATs may be be ingrained in your company culture: “We’ve always done it that way…” WOMBAT Metamorphosis Alert: A task or project that wasproductive in the pastcanevolve into a WOMBAT in today's environment.Your comfort zone is populated with WOMBATs.More on comfort zones, here.Some people are WOMBATs in disguise. Stay away from them, they are vampire WOMBATs.If you don’t control your WOMBATs, your WOMBATs will…