Hey Ray! Why Flames Don't Cast Shadows
Shadows are pretty much an everyday or every night occurrence. Since light travels in a straight line, when something gets in the way of that path, it creates an absence of light, or a shadow.
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Shadows are pretty much an everyday or every night occurrence. Since light travels in a straight line, when something gets in the way of that path, it creates an absence of light, or a shadow.
Have you ever had to get an MRI? That is the loud machine with a very powerful magnet that can make images of the inside of your body.
The night sky is full of amazing things during the summer! One thing that peaks in August is the Perseid Meteor Shower, and it can be one of the biggest celestial highlights in the summer.
When people refer to heat lightning, they are usually talking about seeing lightning, but not hearing thunder in the evening or nighttime, usually during the summer months.
Have you ever tried to pour something from one coffee cup into another, only to have the liquid seemingly stick to the side of the cup, resulting in a mess? Meteorologist Ray Petelin explains the science that makes that mess can also help us perform a pretty cool trick!
Smog and air quality issues can happen in our area any time of the year. Meteorologist Ray Petelin shows us how some weather patterns and our daily routines can also make the air quality worse.
If you think about it, water can be kind of weird.
Gravity is the force that attracts things toward other things that have mass.
It may be controversial to say in these parts, but it is ridiculous to use relative humidity as an indicator of comfort.
We all know that in the summer, our cars basically turn into ovens.
Last week, we talked about how light pollution makes it harder, if not impossible to see some amazing things in the night sky.
During the daytime, when you look to the sky you can't see stars, or sometimes planets that you can see at night. While daylight is the obvious reason, at night we may not be able to see some of the good stuff because of different kind of light called light pollution.
This is a fun experiment that is easy to do and requires very little set up. I like to call it the "Invisible Extinguisher," since it puts a candle out by using what seems to be an empty glass.
or most of us, television has been around for most of our lives. A click of a remote, and information and entertainment appears before our eyes. A lot goes into making that seemingly easy thing happen, though.
We have done a lot of experiments and covered a lot of topics. This time, we are going to play around with density, and use its ingredients to make some weird science.
You've certainly heard the sun referred to as a ball of fire in the sky, but is it actually on fire? Ray and Elizabeth Petelin answer that question in an all-new Hey Ray!
If you've ever seen a wheel moving at high speed, it looks like it's moving backward to our eyes, but why? Ray and Elizabeth Petelin are here to explain what that illusion does to your eyes!
Ray and Elizabeth Petelin have a new experiment for you, one that puts a coffee cup in danger but science once again saves the day!
You may have heard that Earth is getting a mini-moon and that seems pretty cool, but will you even be able to see it? Ray Petelin is here to explain!
A viewer wrote in to ask Ray - "Why can we sometimes see the moon during the day?" The answer may not be what you think!
Withe colder air on the horizon, testing your home for Radon is very important. Ray and Elizabeth Petelin explain in an all-new Hey Ray!
We always perceive the sun to be yellow, but is it actually yellow? Ray and Elizabeth Petelin explore this question!
We've all put popcorn on the stove or in the microwave, but what is the science behind those popping kernels? Ray and Elizabeth Petelin are popping in with some science!
Western Pennsylvania is home to plenty of creeks and rivers, so how can you distinguish between the two? Ray and Elizabeth Petelin are here to explain!
One viewer asks: Why can they only hear the train whistle at Fallingwater when it's about to rain? Ray Petelin investigates this mystery in an all-new Hey Ray!
Crews are battling a fire at a popular Irish pub in Carnegie.
Two men are facing homicide and robbery charges in connection with a fatal shooting in New Castle last month.
Student-athletes in Pittsburgh Public Schools could soon have to obtain a higher GPA to play sports.
Satirical publication The Onion, with the support of Sandy Hook families, purchased the bankrupt site of conspiracy theorist Alex Jones.
The man they call "Geno" was joined by his family prior to Wednesday night's game.
Pennsylvania lawmakers are taking new steps to protect pets of domestic violence survivors.
Pennsylvania will conduct a legally required recount in the Senate race between Bob Casey and Dave McCormick.
The Republican-backed bill applies to Ohio public K-12 schools and institutions of higher education.
Sen. Bob Casey is locked in a tight race with Dave McCormick in Pennsylvania. There will be an automatic recount of the votes, state officials say.
President Biden and President-elect Donald Trump both promised a "smooth" transition.
The latest economic data shows consumer prices rose slightly in October, which is impacting people's holiday budgets.
Want to check the latest product recalls, click here!
The scammer is directing people to a number claiming it will reactivate their EBT cards.
The Hershey Company recently announced the acquisition of the sour candy brand, Sour Strips.
Von Maur, one of the country's top retailers, held its grand opening Saturday at South Hills Village.
PTL's resident tech guru Ron Smiley is back with Heather and David to talk about artificial intelligence, new parental restrictions coming to certain games, and more!
Sean Collier is back with another edition of the PTL Weekend Guide!
Heather and David are joined by Kidsburgh Ambassador Yu-Ling Behr to talk all things Light Up Night which will happen next weekend!
Thanksgiving is right around the corner and Primanti Brothers is in the spirit with the new Primanturkey Sandwich! Proceeds from sales of the sandwich will also help the KDKA-TV Turkey Fund!
Team PTL's Daisy Jade joins us from The Oaklander Hotel as they get ready for the release of Wicked next week with some drinks that could certainly "Defy Gravity."
As tales of scammers swiping tickets from Ticketmaster accounts grow, there are simple yet effective ways to protect your tickets.
With gambling addiction on the rise, thousands of Pennsylvanians have opted to ban themselves from casinos and online sportsbooks.
Civil forfeiture is a legal process that allows law enforcement to seize property.
A West Mifflin woman said she feels duped after falling for a convincing weight loss gummy ad created by scammers using AI.
A woman whose husband died after a multi-organ transplant says she's not only grieving, she's battling her landlord.
The 65-year-old actor and stand-up comedian, best known for portraying Joey Gladstone on "Full House," said he first noticed symptoms in October.
Consumer Reports applauds food giant's decision after less-than-expected demand for the meal kits from school districts.
The packaging label omitted a key ingredient, prompting a Food and Drug Administration recall.
A nonprofit created by a former Pittsburgh Steeler is improving the quality of life for veterans and first responders.
Allowing enhanced subsidies for health insurance bought through ACA marketplaces to expire would cause premiums to soar, experts warn.
The man they call "Geno" was joined by his family prior to Wednesday night's game.
Queen signed with the Steelers as a free agent this past offseason.
Simon Edvinsson scored 1:30 into overtime, and the Detroit Red Wings beat the Pittsburgh Penguins 3-2.
Some tailgaters are calling a personal foul ahead of the Steelers game with the Ravens on Sunday.
The Penguins acquired a 2027 third-round pick and a 2025 fifth-round pick in exchange for forward Lars Eller.
The latest economic data shows consumer prices rose slightly in October, which is impacting people's holiday budgets.
The $600 million project would redevelop fifteen acres of old industrial land along the Ohio River.
New numbers just published show whether small or big schools are growing the most in the Pittsburgh region.
The Hershey Company recently announced the acquisition of the sour candy brand, Sour Strips.
Von Maur, one of the country's top retailers, held its grand opening Saturday at South Hills Village.
The band continues its touring schedule in 2025 and in August, they'll make a stop at PPG Paints Arena.
The 65-year-old actor and stand-up comedian, best known for portraying Joey Gladstone on "Full House," said he first noticed symptoms in October.
Kennywood has been nominated for hosting one of the country's best theme park holiday events.
Mattel apologizes for inadvertently directing people to pornography site instead of one promoting upcoming film.
Actor Tony Todd's TV and movie credits spanned 40 years and included the 1992 horror film "Candyman" and its 2021 sequel.
Stay on top of local weather with meteorologist Mary Ours’s forecast!
This week, the idea of raising the grade point average eligibility for student-athletes at Pittsburgh Public schools is being considering. KDKA's Lauren Linder has the details.
PTL's resident tech guru Ron Smiley is back with Heather and David to talk about artificial intelligence, new parental restrictions coming to certain games, and more!
Sean Collier is back with another edition of the PTL Weekend Guide!
Heather and David are joined by Kidsburgh Ambassador Yu-Ling Behr to talk all things Light Up Night which will happen next weekend!
Kamala Harris and Donald Trump held rallies in Pittsburgh on the eve of Election Day.
No. 4 Ohio State went to State College and came away with a win.
Halloween 2024 was a smashing success for both Pittsburgh Today Live and Talk Pittsburgh. Team PTL celebrated with a classic monster theme while Talk Pittsburgh got in the ring with some real wrestlers. Here's a look at some of the fun!
Marc-Andre Fleury returned to Pittsburgh on Tuesday for the final start of his career at PPG Paints Arena.
The Pittsburgh Steelers hosted the New York Giants on Monday at Arisure Stadium.
