Microbes at the Gas Pump
Where Have All the Bees Gone?
Earth-Friendly Fabrics
Tree Frogs
Frogs and Toads
Poison Dart Frogs
Life on the Down Low
Jay Watch
Poor Devils
The nerve of one animal
Lightening Your Mood
Night of the living ants
Chemistry and Materials
Spinning Clay into Cotton
Supergoo to the rescue
Pencil Thin
Programming with Alice
Seen on the Science Fair Scene
New eyes to scan the skies
Dinosaurs and Fossils
Watery Fate for Nature's Gliders
A Big, Weird Dino
Digging for Ancient DNA
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Deep History
Detecting an Eerie Sea Glow
Vitamin D-licious Mushrooms
Alien Invasions
Out in the Cold
Snow Traps
Finding the Past
A Volcano's Deadly Ash
Oldest Writing in the New World
A Plankhouse Past
Pygmy Sharks
Food and Nutrition
The mercury in that tuna
Chew for Health
The Color of Health
GSAT English Rules
Order of Adjectives
Whoever vs. Whomever
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
GSAT stars reap scholarship glory
The Annual GSAT Scholarships
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
10 Common Mistakes When Preparing for the GSAT Math Test
Play for Science
Secrets of an Ancient Computer
Human Body
Cell Phones and Possible Health Hazards
A Long Trek to Asia
Foul Play?
Blue Whales
Choosing a Preschool: What to Consider
Raise a Lifelong Reader by Reading Aloud
The Surprising Meaning and Benefits of Nursery Rhymes
Speedy stars
Dreams of Floating in Space
Extra Strings for New Sounds
White fuzzy mold not as friendly as it looks
Flower family knows its roots
Getting the dirt on carbon
Space and Astronomy
A Galaxy Far, Far, Far Away
Big Galaxy Swallows Little Galaxy
Ready, Set, Supernova
Technology and Engineering
Weaving with Light
Are Propellers Fin-ished?
Algae Motors
The Parts of Speech
What is a Noun
What is a Verb?
Seen on the Science Fair Scene
Tinkering With the Basic Bike
Middle school science adventures
The solar system's biggest junkyard
Catching Some Rays
Warmest Year on Record
Add your Article

Preserving Ancient Warrior Paint

Unearthing the distant past is one thing. Preserving it is another. Chemistry can be part of the answer. Over the last 30 years, archaeologists have dug up more than a thousand, life-size warrior statues buried next to an ancient tomb in China. The figures, made of a type of clay called terra-cotta, have been underground for more than 2,200 years. As soon as the objects hit the open air, however, their paint cracks and peels off. Sometimes, the color is gone in just minutes. Now, chemists from Germany think they've found a way to keep the paint from chipping away. The warriors were originally covered with a type of material called polychrome. It consists of a layer of varnish (or lacquer) topped by a pigment. Over time, water seeped into and damaged the coating, so it cracks and peels as soon as a warrior is removed from the ground. The researchers, from the University of Munich, coated some terra-cotta fragments with a special preparation. It included a chemical called hydroxyethyl methacrylate, a part of many plastics. The preparation worked its way into the terra-cotta, replacing some of the water. Then, the scientists used radiation to turn the preparation into a plastic, binding the paint. The researchers next plan to try their technique on an entire warrior. If it works, the 8,000 warriors still buried may stay a lot more colorful when they see the light of day.E. Sohn

Preserving Ancient Warrior Paint
Preserving Ancient Warrior Paint

Designed and Powered by™