Content Preview
Newsday 7 day/Optimum Online® subscribers click here for full access
Not a Newsday or Optimum Online® subscriber? Click here
How come? Stairs make weird echos
Photo credit: iStock Photo | Mayan temple at Chichen Itza in Yucatan state of Mexico.
If you've ever heard the doubled sound of your own footsteps in a long, empty hallway, you're familiar with echoes. Like an undeliverable letter, an echo is sound returned to sender.
Echoes are sound waves that bounce back at us from a hard surface. When you shout into a cave, you often hear your own voice a split second later. That's because the hard stone walls reflect sound waves back,...
Newsday & ExploreLI are now available at no charge to Newsday 7-day and Optimum Online® subscribers. To continue reading, please log in or register now.
