By: Barry Williams
In explaining how smoke detectors work it is all too easy to launch into technical jargon that would only interest the more intellectual reader. That is the type of reader would would spend hours on the net investigating the mating habits of the Peruvian bat...
By: Fiona Thompson
With an anticipated Helium shortage and over one third of global reserves, it's little wonder that the world is looking to Russia. The Russians may extract some nine million cubic kilometers of helium annually but the world's least reactive element is still rare on earth...
By: Victoria Jeffrey
We look up into the night sky at twinkling stars that shine like jewels. Little do we know about the dramatic and destructive life cycle of these happy twinkling jewels in space. They seem so far removed from us. But there is one star whose...
By: A. South
When one thinks of the well-known element, helium, images of shiny balloons and squeaky voices usually enter their heads. Helium is, however, much more diverse than that. Helium, which is the second element listed on the Periodic Table has a long, conflicting history, unique characteristics...
By: J.P. McCauley
Calcium is the most abundant mineral in the human body. Considering our bones and teeth are mostly comprised of calcium, that isn't hard to imagine. Of all the calcium in the human body, 99% of it is contained in the bones and teeth. The remaining...
By: Fiona Thompson
Calcium is a metallic element and the fifth most abundant in the earth's crust. It's an alkaline earth element that doesn't occur freely in nature though it's many compounds are common and we call these compounds "minerals" (such as limestone, marble and chalk) which is...
The chemistry of calcium and its relation to biological function
By: Effie Moore Salem
Calcium is plentiful in the human body and it is plentiful in the earth and rocks and soil. In this capacity it is the isotope calcium 40, the one of the six that is more plentiful; it is the type of calcium making up most...
By: Rob Drew
Easter is an interesting holiday for astronomical reasons. The Christian Church didn't pick the date out of thin air. It is based on an ancient lunar calendar using the Jewish calculation for Passover, the 14th day of Nisan, the month Spring begins. Jewish months start...
By: Eve Redstone
The importance of calcium to the health of our bones and teeth is well known, but it also plays an important role in other parts of the body.Over ninety-nine per cent of a body's calcium is stored in our bones. This storage system is...
By: Frank Sinbeans
Here on Earth, it makes party balloons float, and men's voices sound like chipmunks. It also makes up large percentages of stars, including the sun, and is one of the gases that fills up the universe (believe it or not, it isn't a complete vacuum...

 

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