Hey Ray! Experimenting With Rubber Bands (Part Two)
This week we are going to find out what happens when you add heat to a stretched rubber band, and just to "let the cat out of the bag", it is probably going to be the opposite of what you think!
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This week we are going to find out what happens when you add heat to a stretched rubber band, and just to "let the cat out of the bag", it is probably going to be the opposite of what you think!
Sometimes there is complex science hidden in seemingly simple things. Meteorologist Ray Petelin shows us the hidden heat found in rubber bands, or gum bands as they're known around here.
Pi Day is coming up, so what exactly is Pi? Meteorologist Ray Petelin has a tasty look at this famous number.
The cereal in your cupboard may be magnetic! Meteorologist Ray Petelin shows us why that is.
You may have wondered where a cold draft is coming from, or wanted to convince a teenager to wear a coat on a cold, winter day. This week, Meteorologist Ray Petelin show us how thermal imaging is a great way to see, and show, where heat is escaping, AND tries to use it to convince a teenager to bundle up!
Have you ever noticed snow sparkling during a very cold night or morning? There are some cool processes in action to make that happen. Meteorologist Ray Petelin shows us how "sparkle snow" forms.
Have you ever heard anyone say "It is too cold for snow"? It is an old notion, but can it REALLY be too cold for snow? Meteorologist Ray Petelin has the answer!
I got asked, Hey Ray...Explain upsloping? It is a word meteorologists in the area use a lot during winter because winter is the season where upsloping's impacts are most noticeable.
It is pretty basic knowledge that the Sun is much bigger than the Moon. Meteorologist Ray Petelin explains that they appear the same size in the sky because of some cool, mathematical coincidences.
Did you know your shadow is longer in the winter than in the summer? Meteorologist Ray Petelin explains why.
Light lets us see things, but did you know light can make things disappear, too? Meteorologist Ray Petelin has a simple experiment that shows this in action.
Pittsburgh has seen a lot of different weather on Christmas Day. KDKA Meteorologist Ray Petelin and his daughter Elizabeth take a look back at some of the notable weather to hit Pittsburgh on Christmas Day.
The reason some things float, and others don't is explained by the Archimedes Principle. This week, Meteorologist Ray Petelin shows us how small changes in an object can make a big difference in how buoyant that object is.
Meteorologst Ray Petelin finds out how to spot black ice, how to more safely drive on it, and what to do if you start to slide.
Candles are neat, calming to some and full of science.
It's common to see icicles hanging from roofs or awnings, but can they form sideways? The Barton Family saw just that, and Ray Petelin explains how it may have happened!
When rivers, lakes, and ponds freeze over, it's natural to want to go play on them, but checking them for safety is important. Ray Petelin explains what you need to do to make sure you don't fall through.
When we get large snowfalls, the same question gets asked - why is snow white but when it melts, it's clear? Ray Petelin answers that in a new Hey Ray!
KDKA meteorologist Ray Petelin uses science to debunk some popular conspiracy theories.
Places, people, and things have a variety of reasons for why they are named the way they are, but have you ever thought about why the Arctic and Antarctic have their names? Ray Petelin has and he explains it in a new Hey Ray!
Whenever snow falls in Pittsburgh, you hear the same refrain: milk, bread, and toilet paper, but do we really need to have those in our home? Ray Petelin makes sure you know how to prepare when snow is coming!
While we may dream of a White Christmas in the 412, the weather is often much more interesting than that. Ray Petelin explains in a new Hey Ray!
Every generation when they get older love to brag about how much snow they had to deal with as a kid, but which Pittsburgh generation has the bragging rights? Ray Petelin breaks it down!
Did you ever notice your breath can heat and cool things? Meteorologist Ray Petelin shows us the science of how that works!
You certainly know the dark color of pop, but did you know you can use milk to take the color out of it? Ray Petelin shows you the science in a new Hey Ray!
Investors are recoiling as the war in Iran intensifies, driving up global oil prices. "Global financial markets are in disarray," one Wall Street analyst said.
The heaviest rain is expected from around 6 p.m. through 10 p.m.
A number of schools in the Pittsburgh area have issued delays due to winter weather and potential for freezing rain.
The annual KDKA Fish Fry Guide is back for Lent! Check our listings for a 2026 fish fry near you in Pittsburgh.
A Slice of New York is opening a Pittsburgh location centered around square pizzas while Burghers Brewing is expanding into the former Sly Fox brewery at the Highline.
President Trump said he expects the bombing campaign to last four to five weeks, but "we have [the] capability to go far longer than that."
"Sadly, there will likely be more before it ends. That's the way it is. Likely be more," President Trump said after mentioning the three U.S. service members killed in the operation.
President Trump posted on social media that Iranian Supreme Leader Ayatollah Ali Khamenei had been killed after a massive U.S. and Israeli military operation Saturday.
Americans weighed in on how long a conflict with Iran might last and what Congress should do.
Early on Saturday, the U.S. and Israel launched a military operation in Iran, and Pennsylvania's elected officials have responded.
There are always deals to be had at places like Sam's Club and TJ Maxx, but there are ways to get even bigger discounts.
Ollie's Bargain Outlet in Greensburg has temporarily closed after the Pennsylvania Department of Agriculture found a rodent infestation this week.
Lawmakers in Harrisburg are looking at bills to tackle dynamic pricing.
Each year, the American Customer Satisfaction Index releases its survey of supermarkets, and several Pittsburgh grocers got high marks.
Former patients of Dr. Carl Medgaus are running out of time to try to recover money for unfinished dental work.
Bubba from 100.7 STAR joins PTL for another edition of Pop Talk Live!
House hunting is overwhelming, but what if you could see how it all works in one place, and in just a few hours? Next week, the world of real estate is taking over Washington County.
We’re opening up a bakery, but don’t expect buttercream. Garden guru Doug Oster is here to show us how to whip up cakes designed for a very exclusive clientele: birds!
Get ready to start your engines, or maybe charge your batteries, by taking a look inside the Iron City RC Complex, where the cars may be small, but the competition is intense!
We’re about to put our personal priorities on the line with a “wants vs. needs” bracket challenge with Dave Brough from Clearview Federal Credit Union.
From freshly washed cars to air conditioning units to entire porches, dust is blanketing one Westmoreland County neighborhood.
Former patients of Dr. Carl Medgaus are running out of time to try to recover money for unfinished dental work.
The Woodland Hills school board has been a lightning rod of controversy since putting Superintendent Joe Maluchnik on administrative leave three months ago.
Almost suddenly, Allegheny County has seen a dramatic drop in the number of people dying.
News organizations in the Pittsburgh area are coming together to help each other survive.
Fish fries can be a quandary for people with heart and other medical issues.
With a measles outbreak in Pennsylvania, local health experts want to send a message to families.
Cracking down on the price of prescription drugs is a hefty task.
The advisory, issued on Saturday, affected thousands of customers in Allegheny and Washington counties.
Pennsylvania American Water said that a first round of testing came back negative and an update can be expected late Monday morning.
Pitt's season didn't end the way they wanted it to last year but Mason Heintschel said he's excited to take the next step in his second year with the team.
Western Pennsylvania has historically been a hotbed for producing talent that succeeds in the NFL.
Bryan Rust, Ben Kindel and Justin Brazeau each had a goal and an assist, helping the Pittsburgh Penguins beat the Vegas Golden Knights 5-0.
A majority of Steelers fans want the team to move on from Aaron Rodgers and remain divided over the hiring of Mike McCarthy.
The New York Rangers rallied to defeat the Pittsburgh Penguins 3-2 on Saturday.
A fire chief says a fire at an Ohio hog farm complex has killed about 6,000 pigs and unleashed a large plume of smoke that could be seen for miles.
Lawmakers in Harrisburg are looking at bills to tackle dynamic pricing.
The budget airline Breeze is launching a new nonstop route from Pittsburgh to Myrtle Beach this summer.
The lawsuit accuses Nippon of prioritizing revenue over worker safety.
West Virginia took a major step in the fight against child pornography Thursday, after the state filed a first lawsuit of its kind against Apple.
The countdown is on, as the NFL Draft comes to Pittsburgh and America turns 250 years old.
Hillary Knight, Megan Keller and Jack and Quinn Hughes made a surprise appearance during "Heated Rivalry" star Connor Storrie's opening monologue on "SNL."
The medical drama "The Pitt" has certainly put a lot of eyes on Pittsburgh, and while the stories are fiction, the show highlights some very real things about the city.
Streaming giant Netflix declined to match Paramount Skydance's $31 per share offer for Warner Bros. Discovery.
A Romanian court on Thursday rejected an appeal by American rapper Wiz Khalifa to annul his nine-month jail sentence handed down for drug possession.
Get the latest weather forecast from KDKA-TV First Alert Meteorologist Ron Smiley!
The ranking, which was based on direct consumer feedback and Google reviews, aimed to identify businesses that are known for warmth, patience, and service.
The businesses announced expansion plans Monday, saying that their plans to team up will transform two prominent locations into a new culinary destination.
Stay on top of local weather with First Alert Meteorologist Ray Petelin's forecast!
Steve Ignatz, a retired Pennsylvania State Police trooper, said jamming emergency lines is a crime.
Mike Tomlin stepped down as head coach of the Pittsburgh Steelers after 19 seasons with the team.
Pitt's regular season has ended with an 8-4 record.
Pitt's five-game winning streak came to an end with a 37-15 loss to Notre Dame.
Mason Heintschel set a new Pitt freshman single-game passing record in the Pitt win at Acrisure Stadium.
The 44th annual KDKA-TV Turkey Fund will help our neighbors in need have a nice meal for Thanksgiving.
