Not AI But Real Answers By Experts!
Uranium has existed on the earth for billions of years, but until man tried to make an atomic bomb and use atomic energy, most people did not know it existed. Uranium is a metal, an ore, and one of the heaviest elements. Uranium is actually more common on the earth’s surface than mercury or silver. … Read more
It seems like such a simple thing for us to sniff something and smell it. But the process of smell, and the whole subject of odor, is quite a complicated thing. Man’s sense of smell is poorly developed compared to that of other creatures. Man’s organ of smell is located in the nose; at least; this … Read more
Platinum is a metal—but what an amazing metal it is! It is greyish white in color, and its name comes from the Spanish Plataand means “little silver”.Platinum is harder than copper and almost as pliable as gold. You could take a single ounce of platinum and stretch it out into a fine wire that would … Read more
The words “perpetual motion” by themselves just mean motion that goes on forever. But usually, when we say perpetual motion we are referring to a very special thing. For hundreds of years, men have had the dream of creating a machine that, once it is set in motion, would go on doing useful work without … Read more
Sound is the result of vibrations. Vibration is simply the moving back and forth of the object. But in order for these vibrations to be heard, they must take place in some medium, something to carry the sound from its source to the hearer. That medium may be air, a liquid, or a solid. When the … Read more
All living things are constantly searching for nitrogen in a form their bodies can use. Nitrogen makes up an important part of the bodies of humans, plants, and animals. Nitrogen is a necessary part of the protein substance which is man’s body-building material. Without this substance, no one could grow or repair damaged or worn-out … Read more
How is it that if you leave a piece of damp bread around in the kitchen of your home, it will be covered with a furry,’ green coat in a few days? We say the bread has become “moldy”, which means mold is now growing on it. But where did the mold come from? The answer … Read more
Many people consider milk to be the most nearly perfect food we have. And when you consider all the good things for your body that you obtain when you drink étilk, you can see why this is so. Proteins used to build and repair muscles are found in milk. Another important part of milk is … Read more
It is not easy to define what metal is. Physically, metal is a substance that has a bright luster and is a good conductor of heat and electricity. Metals have varying degrees of hardness, density, malleability, and ductility. (Malleability concerns being able to roll out and hammered. Ductility has to do with being drawn out, as into wire.) … Read more
Anything that takes up a room anywhere in the universe is called “matter”. The matter may be a liquid, a solid, or a gas. These are known as the three “states of matter”. The matter may also be “organic”, or “in-organic”. Human beings, trees, animals, and flowers are examples of organic matter. Lumber, cotton and woolen cloth, and … Read more