Science

Temperature can affect the amount of electricity produced by a wind generator or wind turbine in several ways. Depending on the temperature, efficiency of the turbine can either be decreased on...

One of the things that people can debate is whether or not air has mass. The logic is that since it's invisible, then it can't have mass. This is a false statement. Air does indeed have mass and...

Helium is the sole unreactive gas used in modern airships. One could claim that nitrogen and argon, being the most common unreactive gases in the atmosphere, and therefore present in the air...

The air on Earth is one of the biggest reasons that humans evolved to be the creatures we are today. Made up of several different substances, air sustains us and allows life as we know it to...

Air masses on the Earth divide into six types, which are a response to the temperature and moisture conditions in the latitude regions that they occupy. These air masses have a direct relationship...

Air is a mixture of gases, consisting primarily of nitrogen and oxygen, with some trace gases as well. Although the term "air" refers to the gas mixture covering the surface of the Earth, this...

Oxygen generators are also called oxygen concentrators. They come in many sizes and have several different functional properties. Oxygen generators are used in industrial conditions to meet...

The mechanical wedge has been used for over 5,000 years to accomplish various tasks to apply forces to mating components, either to hold them in place or to move them. In the case of a air hose...

Smoke stacks (a type of chimney) typically protrude from steamships, locomotives, industrial buildings, and even smaller chromed versions from the tops of tractors on an 18-wheeler commercial...

Ambient, or outdoor, air directly affects the health of all living things that breathe it. In the United States, the Environmental Protection Agency (EPA) regulates the quality of ambient air,...

A pneumatic cylinder uses the pressure of a gas to perform work, specifically linear work. The word "pneumatic" comes from the Greek and refers to air, which is the least expensive and most common...

Modern commercial airliners fly at altitudes which, without protection, would quickly become dangerous for anyone flying inside. To counter the low air pressure and cold temperatures, aircraft are...

The compressor is one of the most important parts of the air conditioning system. Air conditioners work using the laws of thermal energy and heat transfer. The medium by which heat is moved around...

The jet stream can best be thought of as a river of wind that moves through the Earth's troposphere. Usually going from west to east, this stream of moving air can be extremely powerful, moving on...

Pneumatic cylinders receive the power for movement from compressed air. A constant supply of air is required for proper operation to the cylinder. The construction of the pneumatic cylinder is...

In cars and jets, turbochargers inject compressed air into engine cylinders so that more fuel can be injected into the cylinder, the chamber in which fuel is combusted. The result is greater...

Car pollutants have a significant impact on the environment. These pollutants impact air quality, water quality, human health, weather and the climate. Two major sources of pollutants from cars...

Air may seem to be made up of nothingness, but in reality it consists of a mixture of nitrogen, oxygen, carbon dioxide and other gasses that have mass and take up space. The density of air can be...

Thermals are upflows of air. They occur as the air nearest to the ground heats up and becomes lighter than the surrounding air, causing it to rise until it meets air of equal density. These...

There are a multitude of experiments that you can conduct to demonstrate the different principles that apply to the gaseous state of water. Nonetheless, there are at least three easy and...

Air has weight. The weight of air pressing down on the atmosphere and Earth's surface is air pressure. Air pressure is also known as barometric pressure, which is measured by barometers. Air...

The natural world is awash in sound. This is even more true of the man-made world. Whenever an object sends out vibrations you can hear, that is, between 20 and 20,000 cycles per second, it...

Gas molecules in the atmosphere are constantly moving. The collisions of these molecules with each other and other objects cause air pressure. Barometers measure air pressure in the atmosphere, so...

A pair of openings into the nose called nostrils allow air to be pulled into the nose and into the nasal cavity. The nose acts both as a filter to clean air breathed in and as a sensory organ to...

In order to understand how air particles move, it is first necessary to understand what air is made of and how it acts. While the exact composition of air differs at any given place and time, the...

Wind generators come in two general types: horizontal-axis ("propeller") and vertical-axis ("Darrieus"). Regardless of type, both use a mechanism called an "airfoil" to convert the linear force...

Helium balloons are popular children's toys because they rise into the air, needing to be tethered with a string to keep them from flying away. Balloons blown up with breath, on the other hand,...

Respiration can refer to many different processes, including the exchange of gases in more complex organisms like animals and the process by which cells oxidize food supplies. When human refer to...

Air pollution occurs when air contains gaseous, liquid or solid substances in sufficient concentration, which under certain conditions tend to damage the environment and cause health effects in...

The distinctive flavor and aroma of tobacco used in cigars comes from a special leaf treatment process called air curing. One of the side effects is that the leaves become especially susceptible...

Hygrometers are devices that are used to measure the amount of humidity in the atmosphere. Humidity is a meteorological term that describes the water vapor that exists in the air at any one time....

The atmosphere is a blanket of gases that protects the earth from the harmful radiation emitted from the sun. The process of the addition of harmful and toxic chemicals and biological matter into...

Air is a mixture of various elements, mainly nitrogen and oxygen, in a gas state. With a few tricks in a science lab, you can make it cold enough to become a liquid!

An air mass is a uniform body of air that generally has the same moisture content and temperature throughout. Air masses are usually formed over large, flat areas that have relatively little air...

Wind tunnels are structures used in aerodynamic research that enable scientists to study the effects of air on stationary objects. This is useful in the manufacturing of airplanes and cars, as...

Buoyancy is the tendency of objects to float in fluids. This occurs if the object is less dense than its fluid surroundings. The fluid weighs more per volume, and tries to drop below the lighter...

Simulating the vortex of a hurricane in a 2-liter bottle is a straightforward and simple at-home or classroom experiment. With a little tape, some hard plastic piping and other inexpensive...

Barometric pressure is caused by the weight of the air above a specific location. Air molecules have a mass, and so when gravity acts on the air molecules, they have weight. Barometric pressure...

With so many people attempting to "go green" and protect the environment, a debate about which form of household heating is better has begun. The two options being discussed are electric heating...

Empty balloons bought at the store, upon being blown up, don't float. In fact, if one holds a blown-up balloon in the air, it will sink.

As you may or may not know, when air gets warmer it expands. When it gets cold it takes up less space. With this simple experiment you can easily demonstrate this. If you are working with...

All atomizers work on the principle of air flow and suction. When horizontal air passes over a vertical tube, it causes the air and liquid inside the vertical tube to be pulled upward. Classic...

Air pollution causes a variety of health problems for people of all ages; however, the elderly, young, sick, disabled and poor are more disproportionally affected. This is also the case when...

Jet streams are among the most powerful weather phenomena on Earth. They are bands of wind in the top of the troposphere (the lowest region of the Earth's atmosphere). Jet streams have a big...

This is another exciting way to teach kids the basics of pressure. It is also fun for adults too!

Air tools use compressed gas to run through pneumatic pressure. Pneumatics is the application of pressurized gas to move machinery and requires strong pipes, specific valves and carefully...

The reservoir is used to hold the fuel for the compressor. Air is used most often in construction and other applications where pneumatics features prominently, but other gases may also be used....

Isaac Newton mentioned air resistance in "Principia," and Galileo spoke of dropped objects hitting the ground simultaneously if there was no air resistance. And anyone who has felt the wind has...

The term "pollution" refers to any substance that negatively impacts the environment or organisms that live within the affected environment. The five major types of pollution include: air...

Pneumatic refers to air, especially air used for a certain purpose. In machines, pneumatic systems use compressed gas to perform a variety of tasks. Some systems can take in and compress air from...