Agriculture
Keeping Bugs Away from Food
Where Have All the Bees Gone?
Getting the dirt on carbon
Amphibians
Salamanders and Newts
Poison Dart Frogs
Tree Frogs
Animals
Monkeys Count
Red Apes in Danger
Glimpses of a Legendary Woodpecker
Behavior
When Darwin got sick of feathers
Listen and Learn
Swedish Rhapsody
Birds
Owls
Lovebirds
Kingfishers
Chemistry and Materials
A Diamond Polish for Ancient Tools
Sticky Silky Feet
A Spider's Silky Strength
Computers
A Light Delay
The science of disappearing
Music of the Future
Dinosaurs and Fossils
Dinosaurs Grow Up
The bug that may have killed a dinosaur
Supersight for a Dino King
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Polar Ice Feels the Heat
Vitamin D-licious Mushrooms
Rocking the House
Environment
Nanosponges Soak Up Pollutants
Where rivers run uphill
Sea Otters, Kelp, and Killer Whales
Finding the Past
Watching deep-space fireworks
Ancient Art on the Rocks
A Plankhouse Past
Fish
Puffer Fish
Sharks
Marlin
Food and Nutrition
A Pepper Part that Burns Fat
Packing Fat
Moving Good Fats from Fish to Mice
GSAT English Rules
Whoever vs. Whomever
Subject and Verb Agreement
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
Access denied - Disabled boy aces GSAT
Results of GSAT are in schools this week
GSAT Mathematics
It's a Math World for Animals
GSAT Practice Papers | GSAT Mathematics | Maths
Deep-space dancers
Human Body
Foul Play?
Nature's Medicines
A Fix for Injured Knees
Invertebrates
Grasshoppers
Termites
Horseshoe Crabs
Mammals
Quokkas
Bats
Squirrels
Parents
Choosing a Preschool: What to Consider
How children learn
Children and Media
Physics
Hold on to your stars, ladies and gentlemen
The Particle Zoo
Einstein's Skateboard
Plants
Surprise Visitor
Getting the dirt on carbon
Fast-flying fungal spores
Reptiles
Cobras
Geckos
Reptiles
Space and Astronomy
Evidence of a Wet Mars
Ringing Saturn
Saturn's New Moons
Technology and Engineering
Supersuits for Superheroes
Spinach Power for Solar Cells
A Clean Getaway
The Parts of Speech
Problems with Prepositions
What is a Preposition?
What is a Verb?
Transportation
Revving Up Green Machines
Middle school science adventures
Robots on the Road, Again
Weather
The solar system's biggest junkyard
Science loses out when ice caps melt
Arctic 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™