Why ice floats on water
By: Jennifer Allsbrook
Water is the most unique substance known to man. It defies chemical and physical logic by exhibiting behaviors that contradict those that are expected. For example, with a molecular weight of 18 g/mole, water should be a gas at room temperature. Water, however, is a...
The difference between baking soda and baking powder
By: Sara Mcgrath
"I don't like to be suspicious or talk scandal, but sometimes I think the Jumbles have too much baking powder in them." ~ The Emerald City of Oz by Baum, L. FrankBAKING POWDERBaking powder is a mixture of baking soda, corn starch, and a...
Reflections on Einstein
By: Christopher Reilley
"Daddy, what does E=mc(2) mean?""Do you want the long answer or the short answer?""Both," she said with a grin. She knows how to wind me up, that one does, and sometimes I think she asks me these questions just to hear me...
The best sources of energy for the future
By: John Graham - 384486
THE FUTURE OF NUCLEAR POWER.Our nuclear program in the United States is providing an extremely valuable proportion of our electric needs and it will continue to do so in the foreseeable future. Indeed it will rise dramatically,Starting thirty years ago, over a hundred...
By: Mikalyn
"The father of numbers," the first Philosopher, Yavancharya the "Ionian Teacher," That Man. Many names exist for the ancient master, Pythagoras. It is said that he served many masters throughout his time; perhaps he acquired the names there. Or maybe his many titles...
How Beryllium is used
By: L. Merlino
How Beryllium is usedBeryllium, a chemical element with the symbol Be and atomic number 4 is a brittle alkaline earth metal that is steel-grey in color and light-weight while exceptionally strong for many industrial uses.Primarily, it is used as a hardening agent in metal...
By: Rex Trulove
Water is an unusual and unique substance. Unlike most other compounds that continue to become denser as they grow colder, water only grows denser until it is just below the freezing point, then it actually grows less dense than it was originally when the freezing...
The physics of the curve ball
By: Reed Young
In addition to gravity pulling them down, all flying objects' horizontal motion is opposed by friction from the air, the strength of which is described by a drag coefficient. While bullets, pop flies and other projectiles are merely slowed while gravity pulls them down, the...
How to make sugar crystals
By: Chuck Hoodak
Growing sugar crystals can be a fun project to do with younger kids on a rainy day, or as a science experiment for a school project. There are several ways to do this, including the string method. Here are some materials that you can gather...
Real
By: SEG
All of our concepts and experiences in life, including time, are relative and yet still ‘real’. And while space-time banishes temporal time from its formulas, such theoretical circumstances do not banish the reality of time from our experiences because the space-time of physics...

 

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