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Scientist demonstrates the bizarre, explosive method used to determine calories in food

I've been eating food my whole life and never knew this!

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Food energy is real energy, and it can be measured as such.

About ten years ago I started working out for the first time in my life, and with it, paying attention to the food I put in my body for breakfast, lunch, and dinner. I never knew much before that about calories, other than the tired "2000 a day" guideline. I could hardly tell you about macronutrients, or how much protein an active person should get. And so, later in my life, I had quite an education.

But there's still a lot that I don't know, apparently, because it wasn't until very recently that I learned where calories come from; or rather, how they're tallied up for inclusion on a food label. Of course, I am familiar with the idea that you can always count up the different ingredients in a meal and their known nutritional values. For example, if you're baking, it's easy to find out the calories in one cup of flour, a tablespoon of sugar, and so on.

But how are the calories in base foods even calculated? And furthermore, how do we know for sure how much protein, fat, or carbs are in certain foods?

It "blew" my mind when I learned that food scientists have a fascinating process for determining the amount of energy contained in different foods. It involves a strange machine called a "bomb calorimeter."


food, nutrition, calories, healthy eating, protein, fats, carbs, vitamins, minerals, eating, science, food scienceAn old bomb calorimeter from the 1960sSeth/Flickr

We all know that food gives us energy, but you've likely never thought of food energy in the same terms as the other different forms of energy like lights, heat, electricity, etc. I know I had never thought of it like energy energy.

But that's exactly what it is, and calories are a very specific measure of that energy.

So in order to determine how many calories are in a certain food, ingredient, or meal — get this — scientists literally blow it up and measure the results of the explosion.

How cool is that!?

In the video below, scientists from the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University show the fascinating process from start to finish.

In the experiment, the team prepares a Christmas dinner plate of turkey, gravy, and potatoes. The first step to determining the calories in the meal is to "homogenize it" or blend it into smithereens, destroying any large chunks and turning the meal into a smooth, near-liquid. Yum!

"Then, over the course of three days we slowly remove all the moisture from it in a freeze drier," says Dr. Sue Roberts. Imagine turning that gooey slop into something similar to the consistency of astronaut food.

The dried samples are then compressed into extremely dense pellets about the size of a Tums antacid.

Now here comes the Parr 6200 "bomb" calorimeter. The very precisely measured pellet-ized portion of the original dinner is put into a chamber and lowered into some water inside the machine. An electrical charge is then applied to the food to "explode it."

Why the water? The calorimeter is able to measure the exact temperature of the water before and after the food explosion. When you look at the actual definition of a calorie, which according to Merriam-Webster is: "the amount of heat required to raise the temperature of one kilogram of water one degree Celsius," it all starts to make sense. Take the temperature of the water after the explosion and you can determine exactly how much energy was contained in the food pellet based on the temperature increase. Amazing!


- YouTubewww.youtube.com

The calorimeter first came about in the 1800s. Even then, our understand of heat, energy, and food science was extremely limited.

As recently as the 1700s, scientists generally believed heat was made of some kind of weightless gas, which they called "caloric."

The theory was disproven in 1799 when Sir Humphrey Davy, an English chemist, rubbed two pieces of ice together in a vacuum (which contains no air or gas) and was able to generate friction heat, thus melting the ice. It was roughly around the same time that Antoine Lavoisier and Pierre Simon de la Place developed the first calorimeter.

Calorimeters, and the Calorie itself, weren't regularly used for food until the late 1800s.

As cool as it is (and it is extremely cool) exploding food in a bomb calorimeter isn't the most common practice today.

Frankly, it's usually not necessary when you can estimate nutritional values in other ways. More common today is the Atwater System, which estimates calories based on the nutritional breakdown of a food item as such:

  • Four kcals (calories) for one gram of protein
  • Four kcals for one gram of carbohydrates
  • Nine kcals for one gram of fat
  • Seven kcals for one gram of alcohol
All of these elements can be tested and measured in different, fascinating ways. Protein is counted by measuring the nitrogen released from food after putting it through some an artificial digestive process. Fats are measured by weighing the food, then stripping the fats away with ether, and weighing it again.

Carbs are the most complicated and thus are often measured by subtracting the percentage of proteins and fats. The remainders, by definition, should be carbohydrates.

food, nutrition, calories, healthy eating, protein, fats, carbs, vitamins, minerals, eating, science, food scienceThis food is on FIRE!Giphy

And, of course, bomb calorimeters have lots of different uses besides determining the calories in the newest line of flavored Doritos. They can be used to test the energy potential of alternative fuels, find more efficient animal feeds, and analyze samples of oil or coal for their potency.

Understanding this process kind of changes the way I look at food. You can't really see the energy in a bag of chips, let's say, but maybe you can imagine the way it might heat a pot of water if it exploded! It makes the numbers on the back of a nutritional label a little more tangible and real, and can maybe lead to more mindful and intuitive eating practices.

Ultimately, though, there is so much more to food than the calories it contains. There are the nutrients, like the proteins, carbs, and fats — the micronutrients like vitamins and minerals that our bodies need. Some people like to know as little as possible about the inner workings of our food and focus purely on their enjoyment of the making, eating, and sharing. But if you're like me, you like to know the science behind food production, and how and why food powers our bodies the way it does. That's all part of the fun.

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The mood ring's mysterious history: the invention everyone claims but nobody patented

One of the most dramatic oversights in fashion history.

Photo credit: Canva

The mood ring is a cautionary tale.

Every child in elementary school is familiar with the mood ring. With its inscrutable, color-changing stone and cryptic ability to "read" the wearer's emotions, the mood ring has stood as an enigmatic symbol of self-expression since the 1970s.

Yet, ask the average American about what they know about the mood ring, and they might shrug and say that they're a fun piece of jewelry that shifts with the user's emotions. Or, a more astute person might propose that there is some element of body heat technology at play. However, almost no one knows how it all began or the story behind the fight for custody of the mood ring.


Hand, mood ring, emotions, history. Where did the mood ring come from? Photo by No Revisions on Unsplash


Origins

The idea originated with an American jeweler named Marvin Wenick, who first conceived of the idea after coming across a magazine article in 1974 about the liquid crystal elements found in thermometers. Fascinated, he quickly developed a compound that changed color between two distinct ranges: black to green and blue to green, within a temperature range of 89.6°F to 100.4°F.

By 1975, he had found a way to use this "magic" compound in necklace pendants and rings. A natural salesman, he claimed that the shifting colors indicated the "warmth of the wearer's character." However, Wenick never patented his invention, resulting in one of the most dramatic oversights in fashion history.


Star Trek, disappointed, missed opportunity, dangIf only Wenick had patented the mood ring...Giphy

Potential customers weren't the only ones who took notice of Wernick's invention. Soon, two New York inventors, Joshua Reynolds and Maris Ambats, began producing their version of the temperature-sensitive jewelry, based on Wenick's "magical compound."

There was a distinction: Reynolds and Ambats told customers that they had created a "real biofeedback tool" that allowed the wearer to learn information about their bodies, positioning their rings as devices to help people meditate and control anxiety. (Which seems eerily similar to a few of today's developments...)

Now inextricably linked with the self-exploration and individualism of the 1970s, sometimes referred to as the "Me Decade," Reynolds and Ambats' "mood rings" became a major fad in the United States.


How mood rings work

Mood rings contain a thermochromic element, which is a crystal encased in quartz or glass that changes its color based on the wearer's body temperature. These specialized crystals are designed to react to changes in temperature, which alter their molecular structure and, consequently, the wavelengths of light (colors) they reflect. Psychologically, the idea is that one's emotional state influences body temperature, so when it changes, its meaning will be reflected in the ring. Today, the spectrum of color has expanded far beyond Wenick's simple black, green, and blue system.

When the mood ring rests at a neutral body temperature (typically around 98.6°F), the crystals will reflect a pretty blue-green hue. According to HowStuffWorks.com, the following colors are associated with these emotions, although they can vary from one mood ring to another.


Crystal, mood ring, science, colors, spinningCrystals encased in quartz or glass change color according to body temperature. Giphy


  • Black: Significant levels of stress, tension, or anxiety. There is a deep well of emotional turmoil here, bubbling just under the surface. (This could also indicate that the crystals have been compromised.)
  • White: A lack of emotional clarity. This color can signify that the wearer is uncertain about how to express or process their current feelings, and is often associated with feelings of frustration, confusion, or a lack of emotional clarity.
  • Amber or Gold: "The appearance of an amber or gold-colored mood ring often signifies a blend of emotions, potentially encompassing a mix of feelings such as surprise, nervousness, or even a touch of upset. This color can be a reflection of the wearer's internal turmoil as they navigate a complex emotional landscape."
  • Pink: "The appearance of a pink mood ring is often linked to the initial stages of arousal, interest, or a sense of emotional uncertainty. This color can suggest that the wearer is experiencing a heightened state of emotional vulnerability or a newfound sense of attraction or curiosity."
  • Red: "The presence of a red mood ring is typically associated with high-energy emotions, such as passion, anger, or even fear. This intense color can be a reflection of the wearer's heightened state of arousal, whether it be in the context of romantic love, intense frustration, or a surge of adrenaline."
  • Blue: "The presence of a blue mood ring is often interpreted as a sign of happiness, joy, and a generally positive emotional state. This color can suggest that the wearer is feeling upbeat, sociable, and in a state of emotional equilibrium."
  • Purple: "A purple mood ring is frequently associated with a sense of clarity, purpose, and spiritual insight. This color can signify that the wearer is in touch with their higher self, tapping into their intuition and creativity to navigate their emotional landscape with a renewed sense of direction and understanding."

Debunked

So, some unfortunate bad news. Mood rings are not scientifically factual. Why? Let's debunk.

First off, mood rings measure temperature, not emotion. While emotions can influence body temperature, the ring's color shifts are more likely to be affected by other factors, such as environmental temperature, physical activity, health conditions, and caffeine intake. Also, the color guide (above) is fun but completely arbitrary. There have never been any scientific studies on whether the corresponding colors have anything to do with their associated internal emotions.


Bill Nye, science Unfortunately, mood rings are not backed by the power of science. Giphy


The end of the story

Back to the "one of the most dramatic oversights in fashion history." The mood ring is a cautionary tale. When mood rings hit the market in 1975, the public went wild, with Joshua Reynolds and Maris Ambats selling an astonishing 40 million rings in just three months. They had the ingenious idea to start selling the rings at a premium, with silver-banded versions priced at $45 and gold-banded versions costing $250 ($1,400 today). By the end of the year, their total sales had reached $15 million.

Yes, the original creator, Marvin Wenick, was mad, but Reynolds and Ambats were even more upset in the end. They also had failed to patent the mood ring, the very fatal error that had allowed them to steal the creation in the first place. By the onset of 1976, just as sales were peaking, the market became oversaturated with cheap knock-offs and demanded plummeted, leaving companies with stockhouses full of unsold inventory. What goes around comes back around. Perhaps they should have consulted their mood ring first?

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Google Maps, Apple Maps, or Waze— former Uber driver shares which app is best

Do you agree? Not everyone did.

Google Maps/Apple Maps

Google maps and Apple maps screenshots

Those of us of a certain age remember asking for directions and keeping two-inch thick road atlases in our cars to find our way around. Then with the internet came the miracle of Mapquest, followed by the how-did-we-ever-live-without-this GPS systems you could attach to your dashboard.

Then smartphones kicked the road trip game up a notch with map apps that not only give up step-by-step directions but also real-time traffic conditions and the ability to find a gas station or restaurant with gluten-free options along your route.

Even those of us who grew up with paper maps struggle to recall how we ever got anywhere before Google Maps.Now we're so deep into the map app era that we're past the wow stage and into the nit-picky stage. It's no longer good enough to have a handheld computer tell us how to get someplace in real time. Now we have expectations, preferences, opinions and complaints. We also have data and anecdotes with which to compare different apps and discuss which ones do what best.

And hoo boy do people have thoughts on that front.

Former Uber employee Flo Crivello shared some info on X about the analysis they did with three of the most popular map apps—Google Maps, Apple Maps and Waze—using a dataset with millions of trips.

The big winner? Apple Maps.

Google came in second, and Waze was a distant third (worst "by far").

"The research also included which apps people *thought* was worse, and the order came in the exact opposite order," Crivello shared. "We understood why Apple Maps got a bad rap given how bad it was at launch — it rapidly got better, but the brand stuck. Waze was more of a mystery, and we ended up realizing that people thought its routes were best because it was exposing them to so much info on traffic, construction, police presence etc… Everyone thinks they want a minimalist UI, but in practice, when they see all this info, they subconsciously conclude 'wow, these guys really have their sh*t together' — even when the routes were actually the worst ones."

Crivello said the results "may be shocking," presumably because Apple Maps started with the worst reputation. In fact, Apple CEO Tim Cook famously apologized for Apple Maps in 2012 and recommended people use Google Maps instead.

However, in the years since, Apple Maps has redeemed itself while Google Maps has lost a bit of its initial luster.



Then Waze came along, which people in cities with variable traffic touted as more accurate for timing and real-time updates, becoming some people's favorite. But according to his data eight years ago, Apple was the winner.

Do those results still hold? Some people in the replies said Google Maps was the best, hands down, while other said they preferred Apple or Waze.

It might depend on where you live and what you look for in a map app (and whether you even have access to Apple Maps). Discussions about these apps abound, with some common threads throughout. Many people agree that the U.S. is where Apple Maps shines, but Google Maps works better abroad. Apple Maps offers more natural navigation directions, such as "Not at this stop sign, but at the next one, turn right," instead of Google Maps' assumption that everyone knows how far 300 feet is. Google maps has great searchability and is easier to check reviews of places compared to Apple Maps. So opinions might vary on "best" depending on what you're using it for.

Waze has loyal users and people who love to joke about where it reroutes you when there's traffic.



These are not the only three map apps available, either. People who travel internationally and use public transportation seem partial to the CityMapper app, which makes finding train and bus routes simple with a user-friendly interface, so again, a lot depends on why you're using the app in the first place.

As far as popularity goes, Google Maps boasts a whopping 1 billion monthly users. In a recent MarketWatch study, 70% of respondents said they use Google Maps, particularly to avoid speed traps. In that study, both Apple Maps and Waze tied for second place. However, there is data that shows younger generations are partial to iPhones, on which Apple Maps is a native app, so it might have a bit of an advantage there.

This article originally appeared last year.

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Man climbs a 1,999-foot tower to change a light bulb. It looks as wild as it sounds.

Just another day at the office.

you name it/YouTube

Man climbs 1999-foot tower to change a light bulb.

You know those big giant antennas that look like they reach just below the wing of an airplane at cruising height? Well, someone has to climb them every so often to inspect them or change the flashing bulb. You'd think it would be easier to have a helicopter or something drop them off, but there's probably a really compelling reason someone has to physically climb the antenna. If nothing else, it's probably a good workout.

For Nick Wagner, climbing these huge antennas is just another Tuesday at the office. Wagner works for a company called National Tower Controls, LLC, and apparently, they do maintenance on these towers annually. I'm not sure if there's some sort of process to decide who gets to be the one to climb the beast or if everyone that works there is expected to climb in some rotation. But Wagner took everyone on his climb to change out the light bulb and inspect KDLT-TV's antenna in 2015, and while the view is beautiful, I imagine it could also give you heart palpitations.

"Must not be afraid of heights" is likely in the job description multiple times, bolded, italicized and highlighted. It's not like if you get a little wobbly you can just step down. You'd need an airborne rescue team or a parachute, which makes you wonder if that's part of their climbing equipment. In the video, the climb itself took nearly 15 minutes and it's not clear where in the climb Wagner started filming, but the view is so spectacular that you can practically see the curvature of the Earth.

earth, curvature of the earth, height, tall, skyTalk about scraping the sky.Canva Photos

According to HuffPost, the KDLT-TV antenna's 1,999 foot height makes it not only one one of the tallest structures in South Dakota where it stands, but one of the tallest structures in the world. It's beaten only by Burj Khalifa in Dubai, and the Tokyo Skytree.

TV and radio are, of course, important, but the sheer height and might of the KDLT-TV antenna are dizzying to think about even if you aren't the one climbing the tower. In short, why does the antenna have to be so high? The answer is really simple: "the higher the mast, the farther the signal can travel." Can't argue with that.

TV, signal, watch tv, television, antennaHappy The Simpsons GIFGiphy

What makes this whole process even more interesting is that if someone were to ask what he did all day, Wagner's answer could be, "I changed a light bulb," and he wouldn't be lying. He would be severely understating his duties, but he wouldn't be lying.

At any rate, Wagner can have those light bulbs and I'll stick to the ones that require no more height than a kitchen chair.

Watch the incredible video below and try to keep your head:

- YouTubeyoutu.be

This article originally appeared three years ago.

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