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Science

Cool clock combines ’80s digital displays with ancient sundial technology

sundial, digital sundial, ancient clocks

Sara BogushThis article first appeared on 9.15.17.


Cavemen must have been perpetually late, given that humans didn't get around to inventing the sundial until 1500 BCE. The first attempts at measuring time via sun movement were shadow clocks created by the Egyptians and Babylonians. These led to the sundial, an instrument that tells time by measuring shadows cast by the sun on a dial plate. Sundials were our preferred method of timekeeping until the mechanical clock was invented in 14th-century Europe.

Photo via (cc) Flickr user Sara Bogush

In 1972, Hamilton introduced the world's first digital watch. Its $2,000 price tag was hefty, but by the '80s, digital watches became affordable for the average person. Now, both technologies have merged in a cool invention, the digital sundial. Created by French Etsy seller Mojoptix, this outdoor clock uses the patterns on a suspended wand to mold natural shadows into a digital-looking time readout. The digital sundial has two major drawbacks: It only reports the time in 20-minute intervals, and it's not very effective after sundown. But it sure does look cool.

Here's the digital sundial in action!


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In a flurry of heavy headlines that constantly inundate our feeds, acts of good connect us back to our faith in humanity. Witnessing just one person go out of their way to make the world a better place is a powerful healing salve against apathy. It reminds us all of what we are collectively capable of creating. This is the philosophy that Upworthy wholeheartedly believes in, hence why we’re always sharing uplifting stories of people giving kindness, generosity and support to their fellow humans.

That’s also why we’re partnering with P&G, the maker of some of our favorite household products like Tide, Always and Pampers, to bring you the 2023 Acts of Good Awards, and celebrate the individuals who are giving back and strengthening their communities.

Think of it like the Oscars of kindness. Half as formal but twice as feel-good.

Besides providing the world with brands we know and trust, P&G is a company doing good acts, whether it’s supporting hygiene education, helping struggling communities gain access to basic necessities or delivering essentials for families impacted by disasters.

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Science

Researchers dumped tons of coffee waste into a forest. This is what it looks like now.

30 dump truck loads and two years later, the forest looks totally different.

One of the biggest problems with coffee production is that it generates an incredible amount of waste. Once coffee beans are separated from cherries, about 45% of the entire biomass is discarded.

So for every pound of roasted coffee we enjoy, an equivalent amount of coffee pulp is discarded into massive landfills across the globe. That means that approximately 10 million tons of coffee pulp is discarded into the environment every year.

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Sponsored

ACUVUE launches a new campaign to inspire Gen Z to put down their phones and follow their vision

What will you create on your social media break? Share it at #MyVisionMySight.

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If you’ve always lived in a world with social media, it can be tough to truly understand how it affects your life. One of the best ways to grasp its impact is to take a break to see what life is like without being tethered to your phone and distracted by a constant stream of notifications.

Knowing when to disconnect is becoming increasingly important as younger people are becoming aware of the adverse effects screen time can have on their eyes. According to Eyesafe Nielsen, adults are now spending 13-plus hours a day on their digital devices, a 35% increase from 2019.1. Many of us now spend more time staring at screens on a given day than we do sleeping which can impact our eye health.

Normally, you blink around 15 times per minute, however, focusing your eyes on computer screens or other digital displays have been shown to reduce your blink rate by up to 60%.2 Reduced blinking can destabilize your eyes’ tear film, causing dry, tired eyes and blurred vision.3

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Working moms are filing for divorce more often

Being a parent is a full time job but without the money and health benefits. Kissing scrapped knees, planning meals, scheduling doctor appointments, extracurricular activities, PTO meetings, the list could go on for days. But in today's society many women with children not only work inside the home but outside as well because a two income household is necessary in many cases. So why are moms leaving their marriages to do it all on their own?

Divorce attorney, Dennis Vetrano Jr. posted a video to TikTok that has over 7.4 million views, explaining the rise of working moms filing for divorce. The revelation came as no surprise to women or other divorce attorneys who commented under Vetrano's video but it may be surprising to some men.

You know how there's that saying that girls mature faster than boys, the initiation of divorce by working moms may be a continuation of that notion.

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Mariandrea Villegas dancing with Phil Wright at The Dance Awards.

Humans may not always recognize greatness right away, but sometimes it's so clear it simply can't be denied.

You don't have to be a dancer yourself to see when someone's got moves, and a viral video from choreographer Phil Wright spotlights a kid who's got moves. Like, wow.

Mariandrea Villegas may be tiny, but she packs a mighty amount of energy, skill, coordination and x-factor into her dancing. Oh and joy. Did I mention joy?

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Curvy and Confident: These stylish retro swimsuits empower every body type

Unleash your inner pinup with swimwear from Unique Vintage

Editor's Note: Upworthy earns revenue from the items shared in this story


Body positivity and empowerment have become essential aspects of the fashion world, and swimwear is no exception. Embracing your curves and feeling confident in your own skin should be a universal experience. Luckily, finding that confidence is easier than ever, thanks to Unique Vintage. With their stylish, retro-inspired swimsuits, everyone can unleash their inner pinup and feel fabulous at the beach or by the pool.


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Pop Culture

Turns out there's a scientific reason kids aren't cold when adults are freezing

Teens in shorts and hoodies while there's snow on the ground aren't as cold as parents think.

Photo by Darran Shen on Unsplash

Kids really aren't that cold in the winter and science proves it.

The argument to wear warm clothes when temperatures dip is a rite of passage in parenting. It never fails—you're either locked in a heated debate with a tiny human who just learned to speak a year ago or rolling your eyes as your teenager leaves the house in shorts when it's 30 degrees outside. Reasoning with your child to put on proper pants for the weather simply evolves as they get older.

Seemingly, once kids reach a certain age, parents stop trying to convince them that coats, hats and gloves are designed to be more than closet ornaments. But it turns out that kids might be on to something, or at least know their temperature comfort levels better than the adults around them. Recently, Vox explored why children seem to be unfazed by weather that sends most adults back inside the house to grab a wool hat and a winter coat.

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Science

We need more trains. Video shows why it's so expensive to build them in America.

We're the sixth most expensive place to build rail transit in the world.

The A Train in New York City

According to the U.S. Department of Transportation, heavy rail transit such as subways and metros produce 76% fewer greenhouse gas emissions per passenger mile than an average single-occupancy vehicle. That makes them one of the most essential tools for fighting climate change.

However, according to a new report from CNBC, the United States is the sixth most expensive country worldwide for building rail transit.

In 2021, President Joe Biden signed the bipartisan infrastructure law that included the country's most significant investment in public transportation. According to CNBC, the U.S. is expected to spend between $91 billion and $108 billion on local public transit through 2026. With all that money at stake, using it effectively will be key.

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