Tag: Science

What is AIDS?

AIDS is an acronym for the Acquired Immunodeficiency Syndrome. As the name implies, AIDS is a combination of symptoms and failures of the immune system, caused by an infectious agent. The infectious agent usually associated with AIDS is HIV, the Huma... [more]



What is a Black Light?

A black light is a source of electromagnetic radiation that emits near-ultraviolet light, usually in the 350-375 nanometer wavelength range. This range is just slightly below the 400nm that human eyes can detect. When this light is reflected off cert... [more]



What is a Computer?

A computer is a device that accepts user input, processes it, and returns output. Usually, the modern use of the term computer refers to an electronic device that accepts input via keyboard and mouse, and returns output via a CRT or LCD monitor. Othe... [more]



What is a Computer Program?

A computer program is a file or collection of files that instruct a computer what to do. Just like a program at a play or concert, a computer program at the most basic level is a list of events. The computer iterates through the list and performs fun... [more]



What is a Decibel?

The decibel is the common measure of sound intensity and radio signal strength. Although it has never been ratified by any governing standards body, its suitability to measuring ratios and losses has led to widespread adoption of the decibel in indus... [more]



What is Electricity?

Electricity is a broad term encompassing the family of phenomenon arising from interaction between charged particles. Of the four fundamental forces of nature, the electromagnetic force is the most influential in our everyday lives. It is responsible... [more]



What is an Electromagnet?

An electromagnet is a device which creates a magnetic field on demand when excited with electrical current. Opposed to conventional permanent magnets, electromagnets are generally weaker and less reliable. However, the ability to control the timing a... [more]



What is Energy?

Energy is the ability to do work. Energy may be stored (potential energy), or it can be said to be a property of an objects motion (kinetic energy). While the scientific definition of energy has been refined for centuries and thus has a very specific... [more]



What is Infrared?

Infrared, or IR, is the the portion of the electromagnetic spectrum between 0.750 and 1000 micrometers. The term infrared literally means "below red", reference to the spectrum's location just below the 0.700 micrometers that the human eye perceives ... [more]



What is the Internet?

The Internet is a global network of computers that communicate via TCP/IP protocol. While the uncapitalized term "internet" refers to bridged networks in general, the capitalized term "Internet" refers to the global network of networks that is public... [more]



What is a Kernel?

The kernel is the central part of an operating system, that directly controls the computer hardware. Usually, the kernel is the first of the user-installed software on a computer, booting directly after the BIOS. Operating system kernels are specific... [more]



What is the Kyoto Protocol?

The Kyoto Protocol is the first legally binding update to United Nations Framework Convention on Climate Change. The UNFCCC was developed at the 1992 Earth Day summit in Rio de Janeiro with the intention of balancing worldwide greenhouse gas emission... [more]



What is a Laser?

Laser is an acronym for Light Amplification by Stimulated Emission of Radiation. The term originally referred to devices capable of emitting monochromatic (or near-monochromatic) light. As the devices developed and entered into almost every type indu... [more]



What is NASA?

NASA is the United State's official space agency. An acronym for National Aeronautics and Space Administration, NASA is charged with developing tactical aeronautic and space vehicles, space exploration, and monitoring global patterns such as climate ... [more]



What is Noise Pollution?

Noise pollution is a type of energy pollution in which distracting, irritating, or damaging sounds are freely audible. As with other forms of energy pollution (such as heat and light pollution), noise pollution contaminants are not physical particles... [more]



What is a Protocol?

A protocol is a system of rules that define how something is to be done. In computer terminology, a protocol is usually an agreed-upon or standardized method for transmitting data and/or establishing communications between different devices. Just as ... [more]



What is RAM?

RAM is an acronym for Random Access Memory. It is a type of computer memory akin to a person's short-term memory. Data that must be accessed quickly is kept in RAM, such as running applications and open files. When a computer does not have enough RAM... [more]



What is Sex?

The term "sex" refers to both the reproductive abilities of a particular organism, and also to the act of initiating reproduction by procreation. Not all organisms reproduce by the sexual b... [more]



What is Spyware?

Spyware is any computer program that reports usage patterns or specifics of the computer on which it is installed to a third party. Spyware is a type of malware that generally does not adversely affect the performance of the computer on which it is r... [more]



What is Teleportation?

Teleportation is the transfer of physical objects from one place to another, distant place, without transferring the physical particles that constitute the original object. By most definitions, the object in its original location is either destroyed ... [more]



What is Telepresence?

Telepresence is the action or simulation of remote attendance. Although true stimulation of all five human senses from a remote environment is not possible with current technology, high-quality remote video and audio feeds are termed telepresence for... [more]



What is Throughput?

Throughput is a measurement of the rate of data transfer through a network. Often erroneously referred to as bandwidth, throughput is a combination of the limiting factors of device latency, the speed of the data transfer medium, and the distance bet... [more]



What is Touch?

Touch is the concept of physical contact between two objects. In everyday experience, touch can be perceived as one object applying physical force upon another. However, on the scale of atoms, no two particles ever have zero distance between them. Th... [more]



What is a UFO?

UFO is an acronym for Unidentified Flying Object. Any airborne vehicle or phenomenon that cannot be accounted for by qualified, experienced investigators using modern, accepted equipment and methods is classified as a UFO. Although UFO's are often at... [more]



What is a Virus?

A virus is a computer program that is capable of self-replicating and executing copies of itself on remote systems. In this sense, the computer virus is similar to a biological virus, from whence it draws its name. While a virus by definition does no... [more]



What is VOIP?

VOIP is an acronym for Voice Over Internet Protocol. The acronym accurately describes the purpose of the technology, yet hints at the difficulties in implementation to those familiar with IP (Internet Protocol). The term VOIP refers to no particular ... [more]



What is the World Wide Web?

The World Wide Web is a network of computers that serve webpages. The World Wide Web is a major component of the Internet, along with email, usenet, ftp, and some other minor protocols. The term "world wide" refers to the global nature of the World W... [more]



What is a Yagi-Uda antenna?

The Yagi-Uda antenna is a directional antenna designed to maximize reception over long distances. Generating a much higher signal-to-noise ratio than other antenna designs, the Yagi-Uda antenna has become the de facto standard in antenna applications... [more]


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