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02.28.14
John Mainstone was the custodian of the Pitch Drop Experiment for 52 years.
Because we use water all the time, most of us have an intuitive sense of how long it takes a drop of water to form and fall. More viscous liquids, like oil or shampoo or honey, drop more slowly depending on how thick they are, which can vary depending on concentration, temperature and more. If you've ever tried pouring molasses, you know why it's used as a metaphor for something moving very slowly, but we can easily see a drop of any of those liquids form and fall in a matter of seconds.
But what about the most viscous substance in the world? How long does it take to form a falling drop? A few minutes? An hour? A day?
How about somewhere between 7 and 13 years?
Pitch moves so slowly it can't be seen to be moving with the naked eye until it prepares to drop. Battery for size reference.John Mainstone/University of Queensland
The Pitch Drop Experiment began in 1927 with a scientist who had a hunch. Thomas Parnell, a physicist at the University of Queensland in Australia, believed that tar pitch, which appears to be a solid and shatters like glass when hit with a hammer at room temperature, is actually a liquid. So he set up an experiment that would become the longest-running—and the world's slowest—experiment on Earth to test his hypothesis.
Parnell poured molten pitch it into a funnel shaped container, then let it settle and cool for three years. That was just to get the experiment set up so it could begin. Then he opened a hole at the bottom of the funnel to see how long it would take for the pitch to ooze through it, form a droplet, and drop from its source.
It took eight years for the first drop to fall. Nine years for the second. Those were the only two drops Parnell was alive for before he passed away in 1948.
- YouTubewww.youtube.com
In total, there have been nine pitch drops in the University of Queensland experiment. The first seven drops fell between 7 and 9 years apart, but when air conditioning was added to the building after the seventh drop, the amount of time between drops increased significantly. The drops in 2000 and 2014 happened approximately 13 years after the preceding one. (The funnel is set up as a demonstration with no special environmental controls, so the seasons and conditions of the building can easily affect the flow of the pitch.)
The next drop is anticipated to fall sometime in the 2020s.
The first seven drops fell around 8 years apart. Then the building got air conditioning and the intervals changed to around 13 years.RicHard-59
Though Parnell proved his hypothesis well before the first drop even fell, the experiment continued to help scientists study and measure the viscosity of tar pitch. The thickest liquid substance in the world, pitch is estimated to be 2 million times more viscous than honey and 20 billion times the viscosity of water. No wonder it takes so ridiculously long to drop.
One of the most interesting parts of the Pitch Drop Experiment is that in the no one has ever actually witnessed one of the drops falling at the Queensland site. The drops, ironically, happen rather quickly when they do finally happen, and every time there was some odd circumstance that kept anyone from seeing them take place.
The Queensland pitch drop funnel is no longer the only one in existence, however. In 2013, Trinity College in Dublin, Ireland, managed to capture its own pitch drop on camera. You can see how it looks as if nothing is happening right up until the final seconds when it falls.
- YouTubewww.youtube.com
Today, however, with the internet and modern technology, it's likely that many people will be able to witness the next drop when it happens. The University of Queensland has set up a livestream of the Pitch Drop Experiment, which you can access here, though watching the pitch move more slowly than the naked eye can detect is about as exciting as watching paint dry.
But one day, within a matter of seconds, it will drop, hopefully with some amount of predictability as to the approximate day at least. How many people are going to be watching a livestream for years, waiting for it to happen?
PoorJohn Mainstone was the custodian of the experiment for 52 years, from 1961 to 2013. Sadly, he never got to witness any of the five drops that took place during his tenure. Neither did Parnell himself with the two that took place while he was alive.
John Mainstone, the second custodian of the Pitch Drop Experiment, with the funnel in 1990.John Mainstone, University of Queensland
Sometimes science is looks like an explosive chemical reaction and sometimes it's a long game of waiting and observing at the speed of nature. And when it comes to pitch dripping through a funnel, the speed of nature is about as slow as it gets.
Images via Canva
Young accountant, goat farmer.
Look, there are certain jobs that aren't at the top of the "dream list." You don't often meet 14-year-olds who, when asked, "What do you wanna be when you grow up?" answer: pencil pushers! But in a world of influencers and content creator wannabes, Gen Z (or at least some of them) is ready to get serious.
When many think of the Zoomer generation (born between 1997 and 2012), there are a few things that come to mind. These folks are characterized by wanting to make a difference in the world and leave it better than how they found it, but they're also not naïve. When it comes to practicality, Gen Z is all about making the most of the ever-changing world—especially the financial market.
According to an article by writer Preston Fore for Yahoo! Finance, the accountants from the Boomer generation (and there are millions of them) are retiring, leaving a huge gap. "The industry is facing a talent shortage crisis. While it’s been lamented as one of America's most boring jobs and headed down a path of extinction, Gen Z is realizing the six-figure career opportunity."
Season 8 Nbc GIF by The OfficeGiphy
Smart thinking. But in typical Gen Z fashion, many are combining their logical desire for fail-safe employment with actually making the world a better place. One way is volunteering to help others with the VITA (Volunteer Income Tax Assistance) program—which helps provide free tax consultation to those in need. The IRS is working with a handful of universities to help aspiring accountants in college get their feet wet AND make a difference.
Fore notes the story of Alana Kelley, a third-year student at Oregon State University. She has already helped many with their taxes, saving them much-needed money in these trying times. "One was a goat farmer who had only a landline and no access to the Internet. Another was a young woman who was financially supporting her sister. Kelley was able to help them obtain a life-changing $6,000 back in refunds."
VITA has been around for over 50 years, and Gen Zers are genuinely making use of it. Fore shares, "Last year alone, an army of more than 280 CSUN students helped over 9,000 low-income taxpayers claim nearly $11 million in tax refunds and $3.6 million in tax credits—plus save them over $2 million in tax preparation fees."
Figuring out our finances may be getting easier.
Photo by Towfiqu barbhuiya on Unsplash
Many Redditors are backing the idea. On the subreddit r/accounting, someone asks, "Gen Z is making accounting cool again?" As expected, a few commenters push back on the "again" part. A few more respond to the aforementioned article with suspicion, as though the IRS is paying for it. But one person defends it: "VITA was a very cool program for both audit and tax aspiring accounting student to join. Most of the successful accountants I've known joined VITA. It's also led by younger students these days, so it's even more well-known within the Gen-Z students group." Another got straight to the point: "We just want money and free time bro."
Accounting isn't the only occupation Gen Zers seem to be drawn to. As there are fewer guaranteed roads to success, some Zoomers are skipping traditional college altogether and instead training to become plumbers, electricians, and other vocations that don't need a hefty degree. An article for the New York Post cites a recent study showing that a lot of folks of the Gen Z generation were interested in blue-collar work. "The survey of 2,091 people aged 18 and over found that Gen Z was becoming the 'toolbelt generation' because of the shifting attitudes and soaring cost of a college education."
Plumbing Plumber GIF by Family GuyGiphy
With higher tuition and way less of a safety-net, many are thinking long-term, and if they can find a way to make a positive impact at the same time, all the better.
All illustrations are provided by Soosh and used with permission.
It's hard to truly describe the amazing bond between dads and their daughters.
Being a dad is an amazing job no matter the gender of the tiny humans we're raising. But there's something unique about the bond between fathers and daughters. Most dads know what it's like to struggle with braiding hair, but we also know that bonding time provides immense value to our daughters. In fact, studies have shown that women with actively involved fathers are more confident and more successful in school and business.
You know how a picture is worth a thousand words? I'll just let these images sum up the daddy-daughter bond.
A 37-year-old Ukrainian artist affectionately known as Soosh, recently created some ridiculously heartwarming illustrations of the bond between a dad and his daughter, and put them on her Instagram feed. Sadly, her father wasn't involved in her life when she was a kid. But she wants to be sure her 9-year-old son doesn't follow in those footsteps.
"Part of the education for my kiddo who I want to grow up to be a good man is to understand what it's like to be one," Soosh told Upworthy.
There are so many different ways that fathers demonstrate their love for their little girls, and Soosh pretty much nails all of them.
Get ready to run the full gamut of the feels.
1. Dads can do it all. Including hair.
A father does his daughter's hairAll illustrations are provided by Soosh and used with permission.
2. They also make pretty great game opponents.
A father plays chess with his daughterAll illustrations are provided by Soosh and used with permission.
3. And the Hula-Hoop skills? Legendary.
A dad hula hoops with his daughterAll illustrations are provided by Soosh and used with permission.
4. Dads know there's always time for a tea party regardless of the mountain of work in front of them.
A dad talks to his daughter while working at his deskAll illustrations are provided by Soosh and used with permission.
5. And their puppeteer skills totally belong on Broadway.
A dad performs a puppet show for his daughterAll illustrations are provided by Soosh and used with permission.
6. Dads help us see the world from different views.
A dad walks with his daughter on his backAll illustrations are provided by Soosh and used with permission.
7. So much so that we never want them to leave.
a dad carries a suitcase that his daughter holds ontoAll illustrations are provided by Soosh and used with permission.
8. They can make us feel protected, valued, and loved.
A dad holds his sleeping daughterAll illustrations are provided by Soosh and used with permission.
9. Especially when there are monsters hiding in places they shouldn't.
A superhero dad looks over his daughterAll illustrations are provided by Soosh and used with permission.
10. Seeing the daddy-daughter bond as art perfectly shows how beautiful fatherhood can be.
A dad takes the small corner of the bed with his dauthterAll illustrations are provided by Soosh and used with permission.
This article originally appeared nine years ago.
Jebulon (Public domain)
Alhambra palace in Granada, Spain is an architectural masterpiece and engineering wonder.
Modern life is filled with so many incredible innovations, it's enough to make your head spin. But as we marvel over the latest technologies, it can be easy to forget that humans have been engineering and creating remarkable things for millennia.
The pyramids in Egypt. The Colosseum and the Parthenon. Teotihuacan and Machu Picchu. We can point to many famous ancient wonders that demonstrate the advancement of civilizations around the world, but some slightly newer architectural wonders also provide a glimpse into humanity's ability to figure things out.
The Alhambra sits atop a plateau overlooking Granada, Spain.Ввласенко
The Alhambra is a palace and fortress in Granada, Spain, that was built between 1238 and 1358 and was home to sultans of the Nasrid dynasty. A celebrated example of Islamic architecture, the Alhambra is now a tourist site, but in its early centuries, it helped Granada remain unconquered by Christian crusaders for far longer than the rest of Spain. Its massive complex sits atop a plateau, making it hard for invaders to breach its fortress walls.
But the Alhambra's beauty and defensive strength are only part of its allure. Visitors who walk through the grounds will notice something that seems unlikely considering the palace's flat location high above the river—water features galore.
The Alhambra has pools, baths, fountains, and gardens—and featured even more of them in its prime. But how? Via an intricate system of medieval pipes and channels and hydraulic engineering that enabled not only pools and baths, but heated flooring, steam rooms, and perhaps even an incredible water-operated clock.
- YouTubewww.youtube.com
The Fuente de los Leones (Fountain of Lions) is a central feature of the palace. Just looking at it you wouldn't imagine it was a clock, but there is a serious hypothesis that it was and that it ran completely on water.
A circular fountain sits in its center surrounded by 12 lion statues facing outward. The clock hypothesis posits that the original fountain pool drained and filled on a 12-hour cycle, with 12 holes in the pool positioned in a graduating spiral, each one connected by a pipe to a lion's mouth. As a central pipe filled the fountain pool, the water reached each hole on an hourly basis, making water pour out from the corresponding lions' mouths. When water poured from the first lion, it was 1:00, when it poured from the first and second lion, it was 2:00, and so forth. Once the pool filled and reached 12:00, a syphoning mechanism triggered by the height of the water caused the pool to drain, and the cycle began all over again.
(To see how this clock and water system would have worked in action, see minute 4:56 in the Primal Space video above.)
Fountain of the Lions at the Alhambra, GranadaJebulon (Public Domain)
A restoration project in the early 2000s to mid 2010s brought the fountain back to life, but not as a clock. The fountain has been changed many times over the centuries, and no one knows for sure what the original design was.
The fountain is just one part of the whole elaborate Alhambra water network. Water from the fountain flowed out to four channels that led to spa-like bathing rooms, which featured a cold plunge, warm pools, and heated floors thanks to water flowing through copper stoves underground. They even had steam release pipes to create a steam room.
Remains of baths inside the Alhambra AlcazabaR Prazeres
But one of the other impressive engineering feats of the Alhambra water system was pushing water up a six-meter wall. Without modern water pressure technology, how did they do it? The Primal Space video above shows a kind of whirlpool pump in which a vortex adds air to the water, making it lighter and easier to push up the pipe vertically. However, the illustration in the video appears to be missing an outlet pipe at the bottom that a diagram from "The Mastery in Hydraulic Techniques for Water Supply at the Alhambra" published in The Journal of Islamic Studies shows, which makes the mechanics seem more plausible.
At the time, Alhambra had of the most sophisticated hydraulic networks in the world, bringing water from the river nearly a kilometer below the site and keeping it flowing through the property in gravity-defying ways. What an incredible feat of engineering and ingenuity.