Hey Ray! Explaining How Inertia WorksYou may have heard the scientific expression "An object at rest stays at rest."
Hey Ray! Using Pi to Properly Buy PizzaRemember that one time in math class when you said, "I am never going to use this in real life"?
Hey Ray! The Science Behind What Causes Bridges To Freeze FirstPittsburgh has a lot of bridges -- 446 of them! With bridges, there are additional things to be alert for in colder weather, such as ice.
Hey Ray: Slowing Down For ScienceKDKA meteorologist Ray Petelin explores the science behind gravity with slow-motion and a slinky.
Hey Ray! The Science Behind Why Homes Become Drier During Cold WeatherWe are now in the time of year where our furnaces roar back to life, and once the furnaces come on, you may notice the air in our homes becomes much drier.
Hey Ray! More Acorns Falling From Trees This YearThis fall, you may have noticed that acorns have been falling by the bucket load.
Orionids Meteor Shower To Peak OvernightAttention stargazers -- there's a cool sight coming to our area. It's time again for the Orionids meteor shower.
Hey Ray! Explaining What The Summer Solstice MeansToday, at 5:43pm is the Summer Solstice, so what does that really mean?
Hey Ray! 'Albedo' Shows How Light Reflects Off Of Clothing And SurfacesOn really hot days, you may hear a meteorologist tell you to wear light colored clothing. Why is this?
Hey Ray! Creating A Cloud In A BottleKDKA Meteorologist Ray Petelin is back with another home science experiment, here to show you how to create a cloud in a bottle.
Hey Ray! The Science Behind Sea Breezes And Land BreezesWhen you go to the beach, you may notice in the afternoon, how the wind blows off the water toward the land.
Hey Ray! 'Supercooled' Water And How It Can Freeze Right Before Your EyesIf you ever left a bottle of water in a car or outside when temperatures were below freezing, you may have seen it turn from a liquid to ice almost instantly.
Hey Ray! How To Determine How Far Away A Thunderstorm Is From YouCan you really tell how far away a thunderstorm is by counting the seconds between the flash of lightning and the boom of thunder?
Hey Ray! How Pressure, Wind, And Moisture Help Create HailNow that it is officially spring, we are getting into the time of year that features thunderstorms.
Hey Ray! Powerful Pressure And Its ImportanceAtmospheric pressure is a major part of meteorology, and it is always around us.