upworthy
Science

Two guys captured the speed of light on camera at 10 trillion frames per second

"The light is moving a million times faster than a bullet.”

two men in white coats
The Slow Mo Guys/Youtube

The Slow Mo Guys had to use a special camera.

Gavin Free and Daniel Gruchy aka The Slow Mo Guys, have filmed all sorts of things in, you guessed it, slow motion—everything from popcorn makers to giant water balloons to tattoo guns. Each of their videos feels a bit like an episode of “Mythbusters”—just a couple of guys making science super fun.

One of the Slow Mo Guys’ most popular videos to date features the fastest thing known to man: light.

Since light travels at an unfathomable 186,282 miles per second, Free and Gruchy had to reach out to CalTech in Pasadena, California for a camera that could capture “10 trillion frames per second,” which they said was “20 million times faster than the fastest we've ever filmed on this channel."

The team first shoots a beam of light through a bottle of milk water. Even though to the naked eye, it looks as though the bottle instantly lit up, the later footage reveals the light (a sort of blue ghost-like thing in the playback) travels from one side of the bottle to the other.

“Every frame seems to be ten picoseconds,” Free says. “And we're just sort of casually watching this go left to right through the bottle, but in reality the light is moving a million times faster than a bullet.”

Watch the full video below, which includes a few other fascinating slow motion experiments with light.

Though it may sound like science fiction, we live in a time where capturing the fastest thing in the universe on camera is a fun experiment for an afternoon. Neat!


This article originally appeared in February.

Robin Williams played inspiring English teacher John Keating in "Dead Poets Society."

As a Gen X parent of Gen Z teens and young adults, I'm used to cringing at things from 80s and 90s movies that haven't aged well. However, a beloved movie from my youth that I didn't expect to be problematic, "Dead Poets Society," sparked some unexpected negative responses in my kids, shining a spotlight on generational differences I didn't even know existed.

I probably watched "Dead Poets Society" a dozen or more times as a teen and young adult, always finding it aesthetically beautiful, tragically sad, and profoundly inspiring. That film was one of the reasons I decided to become an English teacher, inspired as I was by Robin Williams' portrayal of the passionately unconventional English teacher, John Keating.

The way Mr. Keating shared his love of beauty and poetry with a class of high school boys at a stuffy prep school, encouraging them to "seize the day" and "suck all the marrow out of life," hit me right in my idealistic youthful heart. And when those boys stood up on their desks for him at the end of the film, defying the headmaster who held their futures in his hands? What a moving moment of triumph and support.

My Gen Z kids, however, saw the ending differently. They loved the feel of the film, which I expected with its warm, cozy, comforting vibe (at least up until the last 20 minutes or so). They loved Mr. Keating, because how can you not? But when the movie ended, I was taken aback hearing "That was terrible!" and "Why would you traumatize me like that?" before they admitted, "But it was so gooood!"

- YouTubewww.youtube.com

The traumatize part I get—that film gets very heavy all of a sudden. But in discussing it further, I uncovered three main generational differences that impacted their "Dead Poets Society" viewing experience and what they took away from it.

1) Gen Z sees inspiring change through a systemic lens, not an individual one

The first thing my 20-year-old said when the credits rolled was, "What? That's terrible! Nothing changed! He got fired and the school is still run by a bunch of stodgy old white men forcing everyone to conform!" My immediate response was, "Yeah, but he changed those boys' individual lives, didn't he? He helped broaden their minds and see the world differently."

I realized that Gen X youth valued individuals going against the old, outdated system and doing their own thing, whereas Gen Z values the dismantling of the system itself. For Gen X, Mr. Keating and the boys taking a stand was inspiring, but the fact that it didn't actually change anything outside of their own individual experiences stuck like a needle in my Gen Z kids' craw.

2) Gen Z isn't accustomed to being blindsided by tragic storylines with no warning

To be fair, I did tell them there was "a sad part" before the movie started. But I'd forgotten how deeply devastating the last part of the movie was, so my daughter's "Why would you do that to me?!" was somewhat warranted. "I thought maybe a dog would die or something!" she said. No one really expected one of the main characters to die by suicide and the beloved teacher protagonist to be blamed for it, but I'd somehow minimized the tragedy of it all in my memory.

But also to be fair, Gen X never got any such warnings—we were just blindsided by tragic plot twists all the time. As kids, we cheered on Atreyu trying to save his horse from the swamp in "The Neverending Story" only to watch him drown. Adults showed us "Watership Down" thinking it would be a cute little animated film about bunnies. We were slapped in the face by the tragic child death in "My Girl," which was marketed as a sweet coming of age movie.

Gen Z was raised in the era of trigger warnings and trauma-informed practices, while Gen X kids watched a teacher die on live TV in our classrooms with zero follow-up on how we were processing it. Those differences became apparent real quick at the end of this movie.

3) Gen Z fixates on boundary-crossing behavior that Gen X overlooked

The other reaction I wasn't expecting was the utter disdain my girls showed for Knox Overstreet, the sweet-but-over-eager character who fell for the football player's cheerleader girlfriend. His boundary-crossing attempts to woo her were always cringe, but for Gen X, cringe behavior in the name of love was generally either overlooked, tolerated, or sometimes even celebrated. (Standing on a girl's lawn in the middle of the night holding a full-volume stereo over your head was peak romance for Gen X, remember.) For Gen Z, the only thing worse than cringe is predatory behavior, which Knox's obsessiveness and pushiness could be seen as. My young Gen X lens saw him and said, "That's a bit much, dude. Take it down a notch or three." My Gen Z daughters' lens said, "That guy's a creepo. She needs to run far the other way."

On one hand, I was proud of them for recognizing red flag behaviors. On the other hand, I saw how little room there is for nuance in their perceptions, which was…interesting.

My Gen Z kids' reactions aren't wrong; they're just different than mine were at their age. We're usually on the same page, so seeing them have a drastically different reaction to something I loved at their age was really something. Now I'm wondering what other favorite movies from my youth I should show them to see if they view those differently as well—hopefully without them feeling traumatized by the experience.

This article originally appeared in January

Pop Culture

James Van Der Beek's realization about his identity after cancer has people pondering

"I had to look my own mortality in the eye," said the Dawson's Creek alum. "I had to come nose to nose with death."

Photo credits: SANSIERRASTUDIO (left) Super Festivals from Ft. Lauderdale, USA (right)

James Van Der Beek in 2010 and 2023

There's nothing like a brush with death to make you reflect on your life. It's so easy for all of us to get caught up in the day-to-day details of living and not take the time to ponder the deeper elements of existence, from the nature of the universe to the meaning of life to our own individual role in the big picture.

Existential questions can sometimes feel overwhelming, but actor James Van Der Beek shared a thoughtful 48th birthday message with his own life reflection after facing cancer, and it distills a lot of the angst of those questions into a simple yet profound answer that's hitting home with people.

Van Der Beek, who starred in the millennial favorite Dawson's Creek, announced he'd been diagnosed with stage 3 colorectal cancer in 2024 at age 47. He and his wife, Kimberly, have six children, and in a video shared on social media, Van Der Beek shared the progression from his somewhat unfulfilling identity as an actor to "the ultimate" identity as a husband and father prior to his cancer diagnosis.

"I could define myself as a loving, capable, strong, supportive husband, father, provider, steward of the land that we're so lucky to live on," he said. "And for a long time, that felt like a really good definition of the question, 'Who am I? What am I?'"

"And then this year, I had to look my own mortality in the eye," he continued. "I had to come nose to nose with death. And all of those definitions that I cared so deeply about were stripped from me. I was away for treatment, so I could no longer be a husband who is helpful to my wife. I could no longer be a father who could pick up his kids and put them to bed and be there for them. I could not be a provider because I wasn't working. I couldn't even be a steward of the land because at times I was too weak to prune all the trees during the window that you're supposed to prune them."

He found himself facing the question: "If I am just a too-skinny, weak guy, alone in an apartment, with cancer, what am I?"

So often we define ourselves by our roles in life or by what we do, but what if those things change? Who are we when it's just us, alone, with nothing external to anchor us to a particular identity?

"And I meditated and the answer came through," Van Der Beek shared. "I am worthy of God's love, simply because I exist. And if I'm worthy of God's love, shouldn't I also be worthy of my own? And the same is true for you."

I offer that to you however it sits in your consciousness. However it resonates, run with it," he said. "And if the word God trips you up, I certainly don't know or claim to know what God is or explain God. My efforts to connect to God are an ongoing process that is a constant unfolding mystery to me. But if it's a trigger or if it feels too religious you can take the word 'God' out and your mantra can simply be 'I am worthy of love.' Because you are."


Van Der Beek's sincere, warm delivery and universal message of love and worth hit home for a lot of people. Fellow celebrities and fans alike praised and thanked him for it:

"Happy birthday brother. This was absolutely beautiful 💜🙏🏻💜," wrote singer Chris Daughtry.

"You’re a gift to this earth and I’m grateful to know you even if it’s just through IG. Greatly admire the graceful way you share and happy you made it around the Sun again," wrote New Kids on the Block's Joey McIntyre.

The Sopranos' Jamie-Lynn Sigler wrote, "That is it James. That is it. And you my friend are love. A steward of love. A teacher of love !❤️. We love you !!"

"I watched this with Bodhi with tears in our eyes and Bodhi said 'that was really touching' thanks for being love James and sharing that with everyone, ❤️" added actor Teresa Palmer.

Battlestar Galactica reboot's Katee Sackhoff wrote, "Thank you for your vulnerability and wisdom ❤️ Amen!'

"You are such a special soul. You are pure love my friend," added actor Nikki Reed. "Worthy of it all… hoping to hug all of you soon. Happy birthday❤️❤️❤️"

Some people took issue with Van Der Beek saying people could remove the word "God" from the message if they wanted to, but the reality is that not everyone has positive feelings about God or religion, and some have even been deeply hurt by people weaponizing them. Van Der Beek making a message of love more universal so that everyone can take it in and benefit from it without barriers or hang-ups is part of what makes it so beautiful. He was able to express his own religious/spiritual experience without shying away from the terminology that was true for him, while also making sure that his message was accessible to everyone regardless of faith or belief.

Perhaps we can all take a lesson from Van Der Beek's sincere, open, and balanced approach as well.

Heroes

Instacart delivery driver trusted her gut instinct and ended up saving a customer's life

"You're supposed to take a picture and leave, and I could not just leave."

Jessica Higgs had a sense that something wasn't right at a customer's house and her action saved his life.

One the more mysterious aspects of being human is our sense of intuition. This "sixth sense" isn't something we can see or measure, but many people have experienced it in some form or fashion. Maybe it comes as a strong feeling that something isn't right, or that we or someone else should or shouldn't do something. It can be hard to read—not every feeling we get is truly our intuition—but there are plenty of examples of people trusting their instincts and being glad they did.

One such story has gone viral on TikTok. Jessica Higgs, a mom who works as an Instacart grocery delivery person, shared a story in an emotional video that illustrates the importance of listening to that inner voice when it prompts you to make sure someone is OK.

"I just want to start this off by saying if you see something, say something," Higgs said.

Animated GIFGiphy

She explained how she had done an Instacart order the previous day for a daughter who was ordering for her older dad who couldn't shop for himself. She said she was going the extra mile like she always does for her customers, and that the daughter told her to just drop the groceries on the porch and he'd get them. That's what Higgs would usually do.

"I get there and something was telling me no, you gotta help this man out," she said. "He came out, and I was like OK let me help you, and I got the groceries. You're not supposed to go into someone's house, but I used my judgment and I brought the groceries inside and put them down wherever he wanted me to put them down. You're not supposed to, but I did. And you're supposed to just take a picture and leave, and I could not just leave."



@jessicahiggs3

@Instacart #28DaysOfEucerin #fyp



Higgs noticed that the man looked really sick and she was really concerned. A voice in her head said, "You gotta say something. You gotta say something, Jess." Rather than mark the order as complete, she messaged the man's daughter and told her that it was really unprofessional to say something like this, but she felt like her dad wasn't doing well. "There's a propane tank in there," she told the woman. "I was in there maybe five feet and I got dizzy. There's got to be a leak. He might not be doing good because of this leak."

The woman said she would send her son over to check it out and Higgs left. The woman changed her tip from $14 to $100, which Higgs appreciated, but the message she sent her the next morning was a much greater reward for her going the extra mile.

"Thank you so much, once my son went to check on my dad it turned out it was definitely leaking," she wrote. "You definitely saved my dad and my younger son's life!!!"

Through tears, Higgs said, "I'm just an Instacart worker, but if you see something, say something. I did and I'm so happy I did."

Higgs' TikTok has been viewed more than 15 million times and has been shared widely on social media. It has also attracted the attention of big companies.

Royal Caribbean Cruises shared a TikTok video of its own praising Higgs for her heroic act and offering her and her family a seven-day cruise anywhere in the world. "Cause even heroes need a vacation," the company wrote.



@royalcaribbean

Stitch with @jessicahiggs3 - cause even heroes need a vacation. Thanks @captaincruiseguy



Old Navy connected with her and arranged a shopping spree where she got to model several new outfits. People Magazine commented, "You’re literally a HERO! Good job trusting your instincts. 💕" Even TikTok itself wrote, "You are amazing ❤️thank you for sharing this with all of us."

Lots of commenters also pointed out that she's not "just an Instacart worker." Her work is important, she's providing a needed service and any job done in a spirit of helping others should not be minimized. If she hadn't been there doing her job well, that man may not be here. Never underestimate the difference each of us can make by the simple act of looking out for one another, friend and stranger alike.

Higgs' heartfelt story touched millions, and she's being rightly rewarded for listening to her heart and going out of her way to help someone. Gotta love seeing good things come to people doing good. Well done, Jessica Higgs.

This article originally appeared three years ago.

Women and their partners need time to grieve after a miscarriage.

One of the greatest tragedies of having a miscarriage is that they are primarily a private affair, grieved mainly by the mother. Because it happens behind closed doors, there is often a lack of public acknowledgment or support for the family. Healthcare professionals typically tell the mother they will forget about the miscarriage after they have a successful pregnancy, but unfortunately, the pain often lingers, and not all go on to conceive.

"Because it is medically common, the impact of miscarriage is often underestimated," says Janet Jaffe, PhD, co-author of the 2010 book Reproductive Trauma: Psychotherapy with Infertility and Pregnancy Loss Clients, told the American Psychological Association. "But miscarriage is a traumatic loss, not only of the pregnancy, but of a woman's sense of self and her hopes and dreams of the future. She has lost her ‘reproductive story,' and it needs to be grieved."

What's the psychological impact of a miscarriage?

Studies show that having a miscarriage is an incredibly traumatic experience, with 29% of mothers in the UK meeting the criteria for post-traumatic stress disorder after losing a pregnancy. A miscarriage is also known to lead to extreme feelings of guilt, anxiety, and depression. In most of the world, women who've miscarried are forced to carry on with life as if they had a routine health issue.

A young women sitting on a blurred beach with her head in one handThe grief can take years. via Canva/Photos

That’s about to change in the United Kingdom, where the country is strengthening its laws to help parents who have experienced a miscarriage. UK Parliament is set to pass a new employment rights bill that would add two weeks of bereavement leave to parents if they have suffered a pregnancy loss before 24 weeks’ gestation. Parents in the UK already have a right to bereavement leave for having lost a child or suffered a stillbirth after 24 weeks of gestation. The new law will cover parents from conception.

The new protections would affect the nearly 250,000 expectant mothers in the UK who suffer a miscarriage every year. It’s estimated that 10 to 20% of pregnancies in the UK end in miscarriages, although that number may be higher because many go unreported.

After the bill is passed into law, the UK will join New Zealand, India, Germany, and the Philippines in guaranteeing bereavement time off for those who have experienced a miscarriage.

A January report from the UK Parliament’s Women and Equalities Committee found that the evidence for the bereavement policy was “overwhelming” and that it should benefit both parents.

“Miscarriages and pregnancy losses can be devastating for women and their families with both emotional and physical consequences. As the data shows, such experiences are sadly not uncommon, and yet current legislation has not caught up with this stark reality,” WEC’s Chair Labour MP Sarah Owen, said, according to the report. “The case for a minimum standard in law is overwhelming. A period of paid leave should be available to all women and partners who experience a pre-24-week pregnancy loss. It’s time to include bereavement leave for workers who miscarry in new employment rights laws.”

The employment rights bill is expected to pass its final hurdles in the House of Commons next week.


Do Americans get bereavement leave for having a miscarriage?

Unfortunately, the United States has a long way to go when it comes to miscarriage bereavement. Only 5 of the 50 states, California, Maryland, Illinois, Oregon, and Washington, have employee bereavement laws, and all of them cover having a miscarriage. However, the amount of time varies between states. When it comes to private companies in the U.S that have bereavement benefits, around 24% of them cover miscarriage.

The UK bereavement bill is a step in the right direction for the people of the UK, and it sheds light on a hidden trauma that many couples go through but few discuss publicly. It also sets a precedent by showing the rest of the world that parents who've had miscarriages deserve real support.

Woman saves clerk from robbery while wearing high heels.

Ginger Rogers once said, "There's nothing a man can do, that I can't do better and in heels." The quote is often used to celebrate the ability of women, but recently one woman was awarded for bringing the famous quote to life when a local convenience store was about to be robbed. Mairi Kerin, 42, stopped by the store to purchase some chocolate for her nieces when she was forced to make a split second decision.

The woman stands at the counter to pay for the treats when a masked man in a hood walks up next to her. Kerin is already cautious of the man due to noticing him in the parking lot appearing suspicious, she explains to SWNS, "As I got out of the car I noticed this person all covered up and thought, ‘You look like you’re going to rob a shop’," before quickly shaking the thought with a reminder. "You can’t think that about people, can’t pigeon-hole people like that… Maybe he’s just got a bike somewhere, he’s been out riding, or whatever.”

But her instincts were right; the man was up to no good and she was about to find out in just a few seconds. The shopkeeper notices the hooded man put something against the door to block it. This prompted the shopkeeper to ask why. The hooded man's answer was chilling. According to Kerin, he calmly replied, "Because I’m going to take your money."

Kerin may have appeared uncomfortable due to breaking in a new pair of heels, but that didn't stop her from utilizing her fighting skills. The woman is a medal-winning Wado-kai karate black belt who has is also trained in Brazilian jujitsu and boxing. Though she was struggling through pain, she managed to quickly thwart the would-be robber. Watch:

"I was wearing new heels at the time and I was trying to break them in–I hadn’t worn heels since lockdown so I needed some practice. That, the bad back, and just not being in the mood resulted in that swagger back to the desk. It makes me laugh when I watch it now," she says to Metro UK.

The man, later identified as Jordan Hickman, probably also walked away a little funny because when Kerin hears the man say he's planning to rob the store, she swiftly assesses the situation and takes action. Noticing his hand in his pocket likely on a weapon, the woman grabs his arm and delivers several powerful kicks in his shin causing the criminal to flee. The entire ordeal was caught on CCTV, aiding in the capture of Hickman and two others—21-year-old Jake Jones and an 18-year-old—who had all been on a robbery spree in Telford, England. All three men were sentenced to a combined 18 years in prison and Kerin was awarded with a Police Chief Superintendent Commendation Award by West Mercia Police for her heroic action.

If you're wondering if Kerin was frightened when fighting off the criminal in her heels, she wasn't afraid at all.

















"The time was right, and I’m glad I was there. People have asked whether I was scared. No, I was not. I’ve imagined taking the legs of far more people than I will ever need to and have trained with this type of event in mind for over 20 years. I have sparred in full-contact sessions with people far heavier than me and have been through the mill many times. In my opinion this is not stupidity or bravado, it’s a reflection of self-belief," Kerin told Metro UK.

While the woman may not be impressed by her achievement, plenty of others are, especially since she did it with aching feet in a brand new pair of high heels.