Agriculture
Growing Healthier Tomato Plants
Flush-Free Fertilizer
New Gene Fights Potato Blight
Amphibians
Poison Dart Frogs
Tree Frogs
Toads
Animals
Cacophony Acoustics
Roboroach and Company
Monkey Math
Behavior
Fish needs see-through head
A Recipe for Happiness
The Science Fair Circuit
Birds
Robins
Crows
Kiwis
Chemistry and Materials
Makeup Science
Mother-of-Pearl on Ice
A Diamond Polish for Ancient Tools
Computers
Earth from the inside out
A Classroom of the Mind
The Book of Life
Dinosaurs and Fossils
Hall of Dinos
Ferocious Growth Spurts
Fossil Forests
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
The Pacific Ocean's Bald Spot
A Global Warming Flap
In Antarctica watch the heat (and your step)
Environment
Watching for Wildfires in Yellowstone
When Fungi and Algae Marry
Ready, unplug, drive
Finding the Past
Stone Age Sole Survivors
Stone Tablet May Solve Maya Mystery
Settling the Americas
Fish
Mahi-Mahi
Halibut
Great White Shark
Food and Nutrition
The Color of Health
Packing Fat
In Search of the Perfect French Fry
GSAT English Rules
Who vs. That vs. Which
Pronouns
Problems with Prepositions
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT Scholarship
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
42,000 students will sit for the GSAT Exam in two weeks
GSAT Scholarship
GSAT Mathematics
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Secrets of an Ancient Computer
Losing with Heads or Tails
Human Body
Sea Kids See Clearly Underwater
Flu Patrol
Kids now getting 'adult' disease
Invertebrates
Wasps
Scorpions
Hermit Crabs
Mammals
Lhasa Apsos
Narwhals
Dingoes
Parents
Children and Media
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
Physics
Dreams of Floating in Space
Road Bumps
Project Music
Plants
Surprise Visitor
Springing forward
Flower family knows its roots
Reptiles
Pythons
Komodo Dragons
Boa Constrictors
Space and Astronomy
A Whole Lot of Nothing
Sounds of Titan
Return to Space
Technology and Engineering
Weaving with Light
A Satellite of Your Own
Sugar Power for Cell Phones
The Parts of Speech
Pronouns
What is a Preposition?
Adjectives and Adverbs
Transportation
Troubles with Hubble
Robots on a Rocky Road
Ready, unplug, drive
Weather
The solar system's biggest junkyard
Either Martians or Mars has gas
Warmest Year on Record
Add your Article

Echoes of a Stretched Egg

You are what you eat, a familiar saying goes. When it comes to eggs, though, you don't even have to eat them to resemble one. Sound waves bounce off people as if each person were an enormous, stretched-out chicken egg, scientists reported recently at a meeting of the Acoustical Society of America. The discovery could help designers build better concert halls or other buildings where sound is important. The shape of an object determines which way sound bounces off of it. Two years ago, a pair of researchers from France discovered that they could use sound to determine the shape of an object as it moves around in a tank of water. This finding suggested the possibility of using sound as a way to identify and count different species of fish in the ocean automatically. Fish can be hard to handle, however, so the researchers chose to work first with people. In one experiment, people walked around inside a hard-walled room, while the scientists used microphones to record echoes of sounds produced by speakers. Participants ranged in age from 3 to 55 years. Analyses of the results showed that each person reflected sound in the same way as would an egg of his or her size. From the viewpoint of sound waves, most of us would have shapes that are somewhat taller and thinner than an average egg. Now, would you like your sounds scrambled, boiled, or fried?E. Sohn

Echoes of a Stretched Egg
Echoes of a Stretched Egg








Designed and Powered by HBJamaica.com™