Agriculture
Protecting Cows—and People—from a Deadly Disease
Keeping Bugs Away from Food
Where Have All the Bees Gone?
Amphibians
Salamanders
Salamanders and Newts
Tree Frogs
Animals
Ant Invasions Change the Rules
Clone Wars
Cannibal Crickets
Behavior
Swedish Rhapsody
Newly named fish crawls and hops
Mosquito duets
Birds
Lovebirds
Parakeets
Flamingos
Chemistry and Materials
A New Basketball Gets Slick
The Buzz about Caffeine
Diamond Glow
Computers
Secrets of an Ancient Computer
The Earth-bound asteroid scientists saw coming
The Book of Life
Dinosaurs and Fossils
Have shell, will travel
An Ancient Spider's Web
Dinosaur Eggs-citement
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
Drilling Deep for Fuel
The Rise of Yellowstone
A Volcano's Deadly Ash
Environment
A Change in Time
Nanosponges Soak Up Pollutants
The Down Side of Keeping Clean
Finding the Past
A Human Migration Fueled by Dung?
Traces of Ancient Campfires
Watching deep-space fireworks
Fish
A Grim Future for Some Killer Whales
Parrotfish
Pygmy Sharks
Food and Nutrition
Food for Life
The Essence of Celery
How Super Are Superfruits?
GSAT English Rules
Problems with Prepositions
Subject and Verb Agreement
Capitalization Rules
GSAT Exam Preparation Jamaica
2014 GSAT Results for Jamaican Kids
GSAT Exam Preparation
Preparing for the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Scholarship
Results of GSAT are in schools this week
GSAT Mathematics
Setting a Prime Number Record
Play for Science
How a Venus Flytrap Snaps Shut
Human Body
Dreaming makes perfect
Surviving Olympic Heat
Cell Phone Tattlers
Invertebrates
Daddy Long Legs
Mosquitos
Shrimps
Mammals
Quolls
Gray Whale
Badgers
Parents
How children learn
The Surprising Meaning and Benefits of Nursery Rhymes
Children and Media
Physics
Einstein's Skateboard
Speedy stars
The Pressure of Scuba Diving
Plants
Farms sprout in cities
Fastest Plant on Earth
The algae invasion
Reptiles
Iguanas
Rattlesnakes
Caimans
Space and Astronomy
Super Star Cluster in the Neighborhood
A Star's Belt of Dust and Rocks
Ringing Saturn
Technology and Engineering
A Satellite of Your Own
Space Umbrellas to Shield Earth
Reach for the Sky
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
Pronouns
Transportation
How to Fly Like a Bat
Troubles with Hubble
Where rivers run uphill
Weather
The solar system's biggest junkyard
A Dire Shortage of Water
A Change in Climate
Add your Article

Cooking Up Superhard Diamonds

Diamonds are more than just sparkling gems. They also happen to be one of the hardest materials on Earth. Now, scientists have found a way to make diamonds even harder by cooking them under pressure with lots of heat. Using the new technique, Russell J. Hemley of the Carnegie Institution of Washington and his colleagues claim that they have made the hardest diamond crystal ever tested. All diamonds are made up of carbon atoms arranged in a regular pattern. Some diamonds come directly out of the ground. Some are made in the lab. To make the gems even harder, Hemley and his group first used a process called chemical-vapor deposition to add more carbon atoms to previously created artificial diamonds. They then cooked these new diamonds with lots of heat and pressure. Temperatures in the cooker reached 2,000 degrees Celsius. The pressure equaled that experienced 150 kilometers below Earth's surface. Under these conditions, the newly deposited diamonds became superhard. The new diamonds were so hard, the researchers say, that they broke equipment worth about $10,000 while testing them. The testing machines couldn't even dent or scratch some of the diamonds. The scientists say that they can adjust the cooking conditions to make their diamonds not only superhard but also supertough, so the gems won't crack or fracture easily. Superhard diamond would be ideal as a coating for industrial tools and medical implants and as the stuff from which to make electronic devices that work under extreme conditions. Individual gems would also make gorgeous, durable jewelry. The discovery of superhard and supertough diamonds could give new meaning to the old saying: Diamonds are forever.—E. Sohn

Cooking Up Superhard Diamonds
Cooking Up Superhard Diamonds








Designed and Powered by HBJamaica.com™