Measuring the Intensity of Sound - Decibels Explained

The intensity of sound is measured in a unit called the decibel (dB), which describes the relative intensity of a sound based on an algorithmic decibel scale containing values ranging from 0 to 194. Achieving a reduction in decibel levels is a common goal of soundproofing projects, though obtaining an exact measure of the pre-treatment decibel level incurs added cost and is often unnecessary.

Objects Of Our Solar System - Moon

The purpose of this article is to provide basic information of our solar system for those who are just starting skywatching and would like to understand better our solar system. First we will discuss about the Moon and in the future posts we will discuss about the planets of our solar system.

Friedmann's Three Assumptions For The Evolution Of The Universe

Have you ever thought about the question "what will happen to this universe"? This article discusses about the "future" of the universe from Friedmann's evolution of the universe point of view.

Astronomy Basics - What Can You Actually See In The Night Sky?

There are plenty of objects to watch in the night sky, and for beginners it might be difficult to get the "big picture". This article introduces the various observation targets, such as planets, galaxies and nebulae. This article provides the needed "big picture" for those just starting with astronomy.

Jet Streams Seen From The Space

Jet streams are very interesting phenomena in the upper levels of the atmosphere. Shortly described they are very fast streams of air moving between high and low pressures. Have you ever seen a picture of a jet stream? This article discusses about the jet streams and a photograph taken by the astronauts in the International Space Station (ISS).

Is Science About To Change As We Know It?

Many times in human history science has had to make revolutionary changes. What we thought we knew, becomes something completely different. We fight these changes. We do not like finding out we are wrong. Galileo looked through the telescope and discovered the Earth was not the center of the Universe. Newton defined the "invisible force" that changed the way we viewed the Universe. Einstein wrote his theory of relativity and again we were forced to change the way we think of science.

Cleaner Living Doesn't Guarantee Longer Living

It's a common misconception that cleaner living results in longer living. A recent experiment proves this theory wrong, albeit at a smaller level than the human being experiences. Nonetheless, bacteria don't always contribute to a bad result.

Swimming in A Pool of Atoms and Molecules

Every wonder what it would be like to swim in a pool of atoms and molecules? How about if you were the same size as those atoms? Imagine trying to train an atom to paddle. It's being done!

The Study of Birds

Humans have been fascinated with magic and mystery of birds since the beginning of man. Early ancient cultures and civilizations worshiped them as gods and spiritual beings. As man began to evolve, he studied birds and their behavior, and learned from them. Birds are classified as Aves or Avians and are amazing, intelligent creatures - possibly some of the most intriguing creatures on our planet.

The Amazing World of Insects

DO YOU think that insects are nothing more than a nuisance? Would you like the world to be free of these annoying pests? Do you spray them, swat them, or step on them at every opportunity? Before declaring war on every bug that crosses your path, why not try to learn something about their world?

'Use it or Lose it' - This Article Isn't About Sex!

The implications of this new understanding are at once promising and disturbing. They suggest that, with the right input at the right time, almost anything is possible. But they imply, too, that if you miss the window you're playing with a handicap.

Dissecting The Human Brain To Find Out How It Learns

When you were asked to dissect a frog in science class how did you feel? You may have felt a little hesitant even a little cruel as you tore it limb from limb to see what was inside of it. But in the end you ended up learning and those memories are still strong and with you, even today.

Corrupted Research - Exposing the Peer Review Process

When you hear about new medical breakthroughs in the news, you will only hear about peer reviewed research. Peer reviewed means that it passed some sort of basic standards for quality. It is the gold standard of research.

Cells

Electric circuits act as a pathway for the electric current. They are the rightful conductor of current form one end to another. An electric circuit is designed so that they are the safest methods of sending electric current from one point to another. In the simplest form, an electric current consist of a bulb, a wire and a cell.

The Power of pH Balance - Life Saving Information About Alkalinity and Acidity

Your body is so amazing, every little part is endlessly playing it's own tune, which orchestrates into the miraculous being of you! Your heart beats, your blood pumps, your lungs bellow, your gray matter fires synapses - all without you telling them to do so.

Can I Do A Paternity Test If The Alleged Father Is Dead?

DNA testing is the most reliable way of confirming the biological relationship between two individuals. The most widely applied test is the DNA Paternity test whereby an alleged father is tested to confirm whether he is the biological father of a child or not.

Atoms and Molecules

An explanation of these smallest particles. Models and mechanisms of how particles and other materials behave have been proposed for thousands of years. Especially in the last few centuries, however, these models have been constantly improved and specified.

What is Chemistry

Chemistry is the science of substances, or materials, their composition and characteristics, and the reactions which take place between those substances. It is concerned with chemical elements in their pure state and when they are combined, that is, reactions of these elements and the compounds which they form.

Chemistry and Technology

Amazing ways how chemistry is used in technology. There are over 100 chemical elements known to date, and almost all of them can form multiple compounds. Chemistry is the science of combining these elements in order to form new materials that have an ever wider use.

NASA & Google Steps in With IKHANA UAV AirCraft to Help Fight California Fires

The Ikhana is one of the U.S. Air Force planes operating in Iraq and Afghanistan, with the Ikhana airplane specially designed for NASA as a long-endurance plane that specializes in high-altitude flights. An unmanned aerial vehicle (UAV) which is flown remotely by pilots at NASA's Dryden, the Ikhana is a General Atomics Aeronautial Systems Predator B. This plane specializes in working with special sensors to process the fire images on board the plane, before sending them down to the firefighters.