Search Results | sound
Your search for "sound" returned 743 results
How Fast Does a Bullet Travel?
science.howstuffworks.com/question456.htm
Reference frames can help explain how a bullet fired from a gun behaves on a moving train. Learn more about reference frames and Newton's first law.
Why do people sing in the shower?
science.howstuffworks.com/life/biology-fields/sing-in-the-shower.htm
Jack Black does it. Wyclef Jean does it. And chances are, you do it, too. Everyone's a rock star in the bathroom. And there's a scientific explanation behind our soapy musical stylings.
Hypersonic Speed Explained: How Hypersonic Planes Work
science.howstuffworks.com/transport/flight/modern/hypersonic-plane.htm
Higher, farther, faster: NASA's X-43A plane is destined to set new speed records. What sets the X-43A apart from other rocket-powered aircraft is that it is powered by a scramjet engine. Learn all about it.
The Evolution of Dictaphones: A Comprehensive History
science.howstuffworks.com/innovation/inventions/dictaphone.htm
The Revolutionary Recording Device That Changed the Way We Work - Dictaphone. Learn about the history, design, and benefits of dictaphone.
Can animals predict the weather?
science.howstuffworks.com/nature/climate-weather/storms/animals-predict-weather.htm
If animals predict the weather, could they save human lives? Learn if animals predict the weather, or if they have a meteorolgoical sixth sense.
Ghost Tape No. 10: The Haunted Mixtape of the Vietnam War
science.howstuffworks.com/ghost-tape-no-10-haunted-mixtape-the-vietnam-war.htm
In one of its more bizarre moments, the U.S. Army created voice tapes of allegedly wandering souls to depress Viet Cong morale.
If you flew over an earthquake, would you feel the plane shake?
science.howstuffworks.com/nature/natural-disasters/fly-over-earthquake.htm
Let's say a big one strikes the home planet. You, however, happen to be flying above the earthquake's epicenter when the natural disaster ripples through. Would you feel it?
Infrasound and Paranormal Activity: Are They Connected?
Can infrasound explain away ghosts, hauntings and other paranormal activity?
How Ghosts Work
science.howstuffworks.com/science-vs-myth/afterlife/ghost.htm
Ghosts are the spirits of dead people that have either returned from the afterlife, or not moved on to it. Learn about ghosts and explanations for ghosts.
'Nightingale' Floors Served as Security Warning System in Ancient Japan
In 17th century Japan, wealthy citizens built homes with "nightingale floors" that squeaked, warning them of intruders. In fact, the floors squeaked louder when the steps got lighter.