Agriculture
Treating peanut allergy bit by bit
Chicken Eggs as Drug Factories
Watering the Air
Amphibians
Newts
Toads
Tree Frogs
Animals
Cool Penguins
Revenge of the Cowbirds
Bee Disease
Behavior
Double take
Babies Prove Sound Learners
Between a rock and a wet place
Birds
Rheas
Geese
Emus
Chemistry and Materials
Meteorites may have sparked life on Earth
Screaming for Ice Cream
Unscrambling a Gem of a Mystery
Computers
The solar system's biggest junkyard
Graphene's superstrength
Toxic Dirt + Avian Flu = Science Fair Success
Dinosaurs and Fossils
A Dino King's Ancestor
Tiny Pterodactyl
Dino-Dining Dinosaurs
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
In Antarctica watch the heat (and your step)
Giving Sharks Safe Homes
Explorer of the Extreme Deep
Environment
Little Bits of Trouble
Ready, unplug, drive
An Ocean View's Downside
Finding the Past
A Volcano's Deadly Ash
Watching deep-space fireworks
Unearthing Ancient Astronomy
Fish
Codfish
Whale Sharks
Trout
Food and Nutrition
Moving Good Fats from Fish to Mice
Chew for Health
The mercury in that tuna
GSAT English Rules
Capitalization Rules
Who vs. That vs. Which
Pronouns
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
2014 GSAT Results for Jamaican Kids
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT Exam Preparation
Results of GSAT are in schools this week
GSAT Mathematics
Play for Science
10 Common Mistakes When Preparing for the GSAT Math Test
It's a Math World for Animals
Human Body
Don't Eat That Sandwich!
Taste Messenger
Sea Kids See Clearly Underwater
Invertebrates
Flatworms
Grasshoppers
Walking Sticks
Mammals
Hares
Beavers
Asiatic Bears
Parents
Expert report highlights the importance to parents of reading to children!
The Surprising Meaning and Benefits of Nursery Rhymes
Children and Media
Physics
The Pressure of Scuba Diving
Black Hole Journey
Strange Universe: The Stuff of Darkness
Plants
Getting the dirt on carbon
Assembling the Tree of Life
Fast-flying fungal spores
Reptiles
Anacondas
Crocodiles
Iguanas
Space and Astronomy
Cousin Earth
Black Holes That Burp
Big Galaxy Swallows Little Galaxy
Technology and Engineering
Smart Windows
A Micro-Dose of Your Own Medicine
Dancing with Robots
The Parts of Speech
What is a Verb?
Pronouns
Adjectives and Adverbs
Transportation
Revving Up Green Machines
Are Propellers Fin-ished?
Reach for the Sky
Weather
Weekend Weather Really Is Different
Where rivers run uphill
Science loses out when ice caps melt
Add your Article

Extra Strings for New Sounds

You've heard of pianos, violins, and guitars. Now, make room for the tritare (rhymes with guitar). Canadian mathematicians have invented the new music-making device by tweaking the standard concept of a stringed instrument. Instead of having strings that stretch between two points, the tritare has strings that are attached to the instrument at more than two points. Picture, for example, a Y-shaped string, anchored at its three endpoints. When played, the instrument produces an eerie sound that challenges the ears with complicated echoes and vibrations. The tritare looks like a guitar with two extra necks. One of the necks has thin crossbars, or frets, that mark places where pushing on strings creates desired pitches. The other two necks are unfretted. Plucking, strumming, or bowing a normal guitar string creates mathematically related sounds called harmonic overtones. For the most part, a string vibrates at a specific, standard rate (or frequency), say 440 times per second, which is the note A. But it also vibrates at twice that rate, creating a sound called the second harmonic. The string's vibration at three times the basic rate is called the third harmonic, and so on. Playing the tritare generates harmonic overtones, but it also creates sounds that are nonharmonic. Nonharmonic frequencies fit in between the harmonic frequencies. Harmonics sound simple, familiar, and pleasant to our ears. Nonharmonics, which are often produced by gongs, bells, and other percussion instruments, sound more complicated. If played correctly, the tritare can produce many nonharmonics at once. The researchers, who are at the University of Moncton in New Brunswick, say that the tritare's sound is beautiful and has lots of potential for musical expression. "Sounds which are richer and less safe harmonically . . . provide inspiration and ways to musically express different things," says Samuel Gaudet, one of the inventors. Other researchers are more skeptical. "To my ears [the tritare] just sounded like a badly out-of-tune instrument," says acoustics specialist Bernard Richardson of Cardiff University in Wales.

Extra Strings for New Sounds
Extra Strings for New Sounds








Designed and Powered by HBJamaica.com™