In the experiment, a high-power green laser passed through a ruby cube, illuminated from the side by a blue laser. The green laser increased the ruby’s absorption of the blue light, creating a darker ...

Fifth graders at Dutch Lane Elementary School in Hicksville are bringing the classroom outside as part of a science experiment. During the space systems unit, teacher Stephanie Sullo engaged her ...

Light's shadow: Researchers showed that a laser beam can sometimes act like a solid object and cast a shadow that is visible to the naked eye. In the picture, the shadow appears as the horizontal line ...

Ben is a writer who's obsessed with all things PlayStation, Pokemon, motorsport, and sci-fi. No relation to the Harry Potter villain. (Probably) In a surprising yet not entirely unprecedented turn of ...

Measuring tall items or buildings is possible for you to do, even if you don't have a ladder. But how? In this experiment you will be using shadow heights created by the sun to measure! You will ...

Let's Learn is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and ...

Introduction Halloween is almost here, and behind every corner there seems to lurk a spooky shadow! Luckily this is all they really are—just shadows that are part of decorations set up to give you a ...

Measuring tall items or buildings is possible for you to do, even if you don't have a ladder. But how? In this experiment, you will be using shadow heights created by the sun to measure! You will ...