A steam turbine
with the case opened. Such turbines produce most of the electricity used today. Electricity consumption and living standards are highly correlated. Electrification is believed to be the most important engineering achievement of the 20th century.
Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the collection of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines to allow for operation without detailed knowledge of their workings.
The simplest form of technology is the development and use of basic tools. The prehistoric discovery of how to control fire and the later Neolithic Revolution increased the available sources of food, and the invention of the wheel helped humans to travel in and control their environment. Developments in historic times, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale.
Technology has many effects. It has helped develop more advanced economies (including today's global economy) and has allowed the rise of a leisure class. Many technological processes produce unwanted by-products known as pollution and deplete natural resources to the detriment of Earth's environment. Innovations have always influenced the values of a society and raised new questions of the ethics of technology. Examples include the rise of the notion of efficiency in terms of human productivity, and the challenges of bioethics.
Philosophical debates have arisen over the use of technology, with disagreements over whether technology improves the human condition or worsens it. Neo-Luddism, anarcho-primitivism, and similar reactionary movements criticize the pervasiveness of technology, arguing that it harms the environment and alienates people; proponents of ideologies such as transhumanism and techno-progressivism view continued technological progress as beneficial to society and the human condition.
The Macintosh Classic
is a personal computer
that was manufactured by Apple Computer
from October 15, 1990 to September 14, 1992. It was the first Apple Macintosh
sold under US$1,000. Production of the Classic was prompted by the success of the Macintosh Plus
and the SE
. The Classic was very similar to its predecessors: due to limited technological advances, it used the same 9-inch (23 cm) monochrome CRT
display, 512×342 pixel
resolution, and its performance was hampered by the same 4 megabyte
limit of the older Macintosh computers. Nevertheless, the Classic featured several improvements over the Macintosh Plus, which it replaced as Apple's low-end Mac computer. It was up to 25 percent faster than the Plus and included an Apple SuperDrive
3.5" floppy disk drive
as standard. The Classic was an adaptation of Jerry Manock
and Terry Oyama's Macintosh 128K
industrial design, as was the earlier Macintosh SE. Apple released two versions that ranged in price from $1,000 to $1,500. Reviewers' reactions were mixed; most focused on the slow processor
performance and lack of expansion slots
. The consensus was that the Classic was only useful for word processing, spreadsheets and databases.
In this month
Did you know...
is a custom knifemaker, martial artist
, and edged-weapons authority who founded Emerson Knives, Inc in 1996. Once known for making "art knives", he later became better known as one of the knifemakers who started the Tactical Knife trend in the early 1990s with his award winning cutlery. Emerson's knives have been displayed as museum
pieces, carried by Navy SEALs
, used by NASA
in outer space
, and have been featured in books and films, making them valuable and popular with collectors. Emerson's knifemaking career was born from his experience as an engineer and machinist in the aerospace industry coupled with his lifelong study of martial arts
. Drawing on his experience as a craftsman and engineer, Emerson has also begun making custom handmade electric guitars. Emerson's own personally developed fighting technique, Emerson Combat Systems, has been taught to police officers
, elite military units
, and civilians worldwide; making Emerson a highly sought after combatives
, and noted authority on edged-weapons in combat.
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