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What Do Those Numbers On Your Toaster Mean?

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by Simon Brew

Have you ever wondered what the numbers printed on your toaster dial actually mean?

An Internet rumor a year or two back suggested that the numbers directly related to the time a piece of bread was in the machine. That would make sense: the number five for five minutes? Sadly, that's since been disproved, and the inevitable answer here is that the meaning of the numbers depends on the kind of toaster you have.

In the following video, you can see a bunch of toasters, all set to the number two. Had the online rumor mill been correct, then that would mean that every toaster would pop out its slices of bread after two minutes. That did not happen.

As the video notes, when you have a low-budget toaster, one of the first pieces of technology to get the chop is a timing chip. Instead, cheaper toasters time how long to keep your bread heated by using a curving metal strip. Change the number on the dial, and it'll determine how much said strip is allowed to curve.

Thus, to directly answer our own question: those numbers do relate to how long the bread will be in the toaster for when switched on. But as for what specific amount of time to which they relate? There's no definite answer.

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Ker Robertson, Getty Images
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architecture
5 Scrapped Designs for the World's Most Famous Buildings
Ker Robertson, Getty Images
Ker Robertson, Getty Images

When an architect gets commissioned to build a skyscraper or a memorial, they’re usually not the only applicant for the job. Other teams of designers submit their own ideas for how it should look, too, but these are eventually passed over in favor of the final design. This is the case for some of the world’s most recognizable landmarks—in an alternate world, the Arc de Triomphe might have been a three-story-tall elephant statue, and the Lincoln Memorial a step pyramid.

GoCompare, a comparison site for financial services, dug into these could-have-been designs for Alternate Architecture, an illustrated collection of scrapped designs for some of the most famous structures in the world, from Chicago's Tribune Tower to the Sydney Opera House.

Click through the interactive graphic below to explore rejected designs for all five landmarks.

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George Mayerle, U.S. National Library of Medicine // Public Domain
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Design
This 1907 Vision Test Was Designed for People of All Nationalities
George Mayerle, U.S. National Library of Medicine // Public Domain
George Mayerle, U.S. National Library of Medicine // Public Domain

At the turn of the 20th century, San Francisco was a diverse place. In fact, Angel Island Immigration Station, located on an island in the San Francisco Bay, was known as the “Ellis Island of the West,” processing some 300,000 people coming to the U.S. in the early 1900s. George Mayerle, a German optometrist working in the city at the time, encountered this diversity of languages and cultures every day in his practice. So in the 1890s, Mayerle created what was billed as “the only [eye] chart published that can be used by people of any nationality,” as The Public Domain Review alerts us.

Anticipating the difficulty immigrants, like those from China or Russia, would face when trying to read a vision test made solely with Roman letters for English-speaking readers, he designed a test that included multiple scripts. For his patients that were illiterate, he included symbols. It features two different styles of Roman scripts for English-speaking and European readers, and characters in Cyrillic, Hebrew, Japanese, and Chinese scripts as well as drawings of dogs, cats, and eyes designed to test the vision of children and others who couldn't read.

The chart, published in 1907 and measuring 22 inches by 28 inches, was double-sided, featuring black text on a white background on one side and white text on a black background on the other. According to Stephen P. Rice, an American studies professor at Ramapo College of New Jersey, there are other facets of the chart designed to test for a wide range of vision issues, including astigmatism and color vision.

As he explains in the 2012 history of the National Library of Medicine’s collections, Hidden Treasure [PDF], the worldly angle was partly a marketing strategy on Mayerle’s part. (He told fellow optometrists that the design “makes a good impression and convinces the patient of your professional expertness.”)

But that doesn’t make it a less valuable historical object. As Rice writes, “the ‘international’ chart is an artifact of an immigrant nation—produced by a German optician in a polyglot city where West met East (and which was then undergoing massive rebuilding after the 1906 earthquake)—and of a globalizing economy.”

These days, you probably won’t find a doctor who still uses Mayerle’s chart. But some century-old vision tests are still in use today. Shinobu Ishihara’s design for a visual test for colorblindness—those familiar circles filled with colored dots that form numbers in the center—were first sold internationally in 1917, and they remain the most popular way to identify deficiencies in color vision.

[h/t The Public Domain Review]

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