By: Emily Strobel
Invisible ink is a form of stenography, which is simply the art of writing hidden messages without letting the recipient know that there is, in fact, a message being sent. There is another form that is close to this: cryptography is a message that the...
By: Earl King
WHAT KEEPS A SHIP AFLOAT Prior to the late 19th century, anyone could answer the question, "What keeps a ship afloat?". It's made of wood and wood floats. Later toward the end of the century, iron and then steel became the construction material of...
By: Emily Strobel
In the United States, helium can be used for many different things. It can be used for advertising purposes, recreation, purge systems, and low-temperature cooling systems.Objects that float in the air, such as balloons, blimps, and other things of that nature, are filled with...
By: Cheryl Howard
Well, I know that most people won't admit that they've seen a U.F.O., because they're afraid that someone will call them a 'crackpot', or 'wierdo'. Well, I've decided that I don't care what people think.I saw my 1st ufo, when I was...
By: Joe Murray
Contemplating "Of the Nature of Things," Lucretius (96-55 BCE) questioned the concept of the universe's infinity when he wrote, "If we should theorize that the whole of space were limited, then it a man ran out to its very last limits and hurled a...
By: Jessica Ranquist
Though the Chinese initially created the firecracker, the Italians developed the modern firecracker that shoots up into the sky and explodes into a fountain of yellows and oranges. They used it as the Chinese had once done, at festivals. Years later, as the fireworks were...
By: Barnaby Meins
In physics, charge, also known as electric charge or electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons. In atoms, the electron carries a negative elementary or...
By: Andrew Goff
When you hear the word drug, most people go straight to the heavy illegal stuff, like cocaine and heroin, but the word drug includes many other things as well. Caffeine, tobacco, and other substances some of us use on a daily basis are considered drugs...
By: Andrew Goff
The best way to get involved with something that is, to some people, normally considered tiresome and boring, like science, is to make it interesting. When we are young we heard that playful Mary Poppins song with the lyrics, "a spoon full of medicine makes...
By: Barnaby Meins
The electron carries a negative elementary or unit charge while the proton carries a positive charge in an atoms, the basic unit of matter. The two types of charge are equal and opposite. The unit of electrical charge in the International System of Units is...

 

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