Using a series of very technical tests, scientists from the French research facility CEA have determined that the Earth's core is roughly 6,000 degrees Celsius. That is approximately 1,000 degrees hotter than the temperature obtained by tests in the 1990s.
These new figures show that the center of the Earth is just as hot as the surface of the sun.
The experiment that supplied the new temperature used X-rays to probe tiny samples of iron at extraordinary pressures to examine how the iron crystals form and melt. The BBC reported that "To replicate the enormous pressures at the core boundary - more than a million times the pressure at sea level - they used a device called a diamond anvil cell - essentially a tiny sample held between the points of two precision-machined synthetic diamonds.
Once the team's iron samples were subjected to the high pressures and high temperatures using a laser, the scientists used X-ray beams to carry out "diffraction" - bouncing X-rays off of the nuclei of the iron atoms and watching how the pattern changed as the iron changed from solid to liquid."
Ever wonder what became of the Mayflower, the ship which took 102 Pilgrims over the Atlantic to North America in 1620?
Check out this interesting reading: On a trip to England, my husband and I visited a Quaker barn in Old Jordans, Buckinghamshire,that may have had the Mayflower used in its construction! Check out the story at my website:
http://gailhennessey.com/index.shtml?barn.html
There are some photographs I...
With Thanksgiving happening, I thought it would be fun to list the things that a teacher of gifted could be grateful for. Here it goes:
1. YOU HAVE A TEACHING JOB
We can be grateful that despite all the cutbacks to the arts, gifted education, and other areas over the years, many schools still employ at least one teacher of the gifted to provide services. It could be worse, I guess.
2. YOU GET TO WORK WITH SOME AMAZING KIDS
As a teacher of the gifted, you get to...
It's been 150 years since President Abraham Lincoln delivered one of the most famous speeches in American history, and while the Gettysburg Address remains a prominent topic in history classrooms, students have never been able to see exactly how those influential words looked on the author's page...until now...
Last week~ I wrote about gifted children have the tendency to become obsessed with a particular area and topic (http://community.educationworld.comcontent/obsessed) and warned teachers not to discourage this traitwhich can be found in highly successful people~ whove made major contributions to society-- but rather help students find healthy ways to develop it.
The remainder of this blog will be dedicated to sharing...
What is innovation? Google the term and it is~ the action or process of innovating a fairly unhelpful definition for those who subscribe to the notion that you cant define a word using a derivative of it. Synonyms include change~ alteration~ upheaval~ transformation~ or breakthrough.
People frequently imagine new technologies~ electronics~ scientific advances~ startups and other types of change when they hear the word innovation. People~ including those who care about...