Agriculture
Vitamin D-licious Mushrooms
Treating peanut allergy bit by bit
Growing Healthier Tomato Plants
Amphibians
Salamanders
Toads
Poison Dart Frogs
Animals
Feeding School for Meerkats
Vampire Bats on the Run
Sleepless at Sea
Behavior
Seeing red means danger ahead
Taking a Spill for Science
Honeybees do the wave
Birds
Dodos
Ibises
Flamingos
Chemistry and Materials
Nanomagnets Corral Oil
Screaming for Ice Cream
Picture the Smell
Computers
Computers with Attitude
Hitting the redo button on evolution
Hubble trouble doubled
Dinosaurs and Fossils
Dinosaur Eggs-citement
Meet your mysterious relative
Fingerprinting Fossils
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Sky Dust Keeps Falling on Your Head
A Dire Shortage of Water
The Pacific Ocean's Bald Spot
Environment
An Ocean View's Downside
Easy Ways to Conserve Water
Plastic Meals for Seals
Finding the Past
Unearthing Ancient Astronomy
Fakes in the museum
Digging Up Stone Age Art
Fish
Electric Eel
Halibut
Parrotfish
Food and Nutrition
Making good, brown fat
The Essence of Celery
A Pepper Part that Burns Fat
GSAT English Rules
Pronouns
Problems with Prepositions
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
GSAT stars reap scholarship glory
How are students placed after passing the GSAT exam
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
Access denied - Disabled boy aces GSAT
Results of GSAT are in schools this week
GSAT Mathematics
Monkeys Count
How to Slice a Cake Fairly
Math of the World
Human Body
Prime Time for Broken Bones
Running with Sneaker Science
Football Scrapes and Nasty Infections
Invertebrates
Arachnids
Roundworms
Ticks
Mammals
Rottweilers
Beagles
Woolly Mammoths
Parents
What Not to Say to Emerging Readers
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
Physics
IceCube Science
Dreams of Floating in Space
The Particle Zoo
Plants
Pumping Up Poison Ivy
Getting the dirt on carbon
Sweet, Sticky Science
Reptiles
Komodo Dragons
Copperhead Snakes
Snakes
Space and Astronomy
Black Holes That Burp
A Dusty Birthplace
Ringing Saturn
Technology and Engineering
Musclebots Take Some Steps
Morphing a Wing to Save Fuel
A Satellite of Your Own
The Parts of Speech
What is a Noun
Pronouns
What is a Verb?
Transportation
Flying the Hyper Skies
Robots on the Road, Again
Are Propellers Fin-ished?
Weather
The solar system's biggest junkyard
Where rivers run uphill
Earth's Poles in Peril
Add your Article

Bright Blooms That Glow

The screaming pinks, blazing oranges, neon reds, and acid greens of many posters and signs owe their brightness to the way those materials are affected by light. The secret to these bright colors is called fluorescence. A material, such as a pigment, fluoresces if it absorbs light of a certain wavelength and then, in turn, gives off light of a longer wavelength. For example, it might absorb ultraviolet light (black light), which is invisible to the human eye, and give off an eerie, greenish glow. Now, researchers have found that four-o'clocks, portulacas, and certain other flashy flowers glow, too. These are the first flowers that anyone has found that naturally glow within the range of light that people can see, says a team of Spanish scientists. A few other types of flowers give off ultraviolet light. These visibly glowing flowers owe their brightness to pigments called betaxanthins. The Spanish researchers found that blue light causes betaxanthins to glow yellowish-green. So, the parts of the flower that look yellow also emit green fluorescent light. Four o'clocks also have a violet pigment called betanin in some places, the scientists found. Betanin works as an anti-fluorescent by absorbing most of the fluorescent light that the betaxanthins emit. The pattern of fluorescence and non-fluorescence might help attract bees and other insects that pollinate the flowers, the scientists suggest. Attracting pollinators can't be the only explanation, though, because the effect appears to be weak. It's also possible that betaxanthins help protect the flowers from stress in their environment.E. Sohn

Bright Blooms That Glow
Bright Blooms That Glow








Designed and Powered by HBJamaica.com™