Facts about Paper
A heroic deed or achievement of a major goal is often commended on a paper document.
Cotton-based paper can be manufactured using fewer chemicals and less energy.
Some paper products, such as paper cups and plates, are used mainly because of the convenience of portability and disposal.
Legal rights and responsibilities of individuals, groups, businesses, and agencies are linked to documents on paper, and people are held liable for anything they agree to by their signature on paper.
An especially important technological development linked to the use of paper is photocopying.
When the personal computer was first introduced and offices were converting from typewriters and older systems of document creation and storage, there were many predictions that computer technology would lead to paperless offices.
Some of the oldest tapa has been found in China, indicating that China was using paper before the beginning of Western records.
Their defective processing equipment generated poor-quality pulp, but by coating their sheets with starch paste they managed to produce paper that was attractive to look at and good to write on.
The Reformation of the sixteenth century, accompanied by the invention of the printing press using movable type, led to a huge rise in paper consumption and production.
The paper may then be removed from the mold, wet or dry, and processed further.
The term "parenting" is a derivative of the word "parent," taken as a verb.
Paper is intimately connected to the fundamental human right of freedom of expression.
The material to be used for making paper is first converted into pulp, which is a concentrated mixture of fibers suspended in liquid.
Life's momentous events—such as births, weddings, graduations, and deaths—are recorded, commemorated, and celebrated with the use of paper.
Important documents that are regularly printed on paper include records of births, deaths, marriages, titles, deeds and real estate transactions, court proceedings, legislative actions, and actions of other governmental agencies.
The history of paper begins with the ancient Egyptians and continues until today.
The images stored on paper are frequently of equal or greater importance than words, particularly when informing future generations about past events.
Many different kinds of paper are currently manufactured, catering to a wide variety of needs.
A major pathway for eliminating free cholesterol is via secretion into bile.
When trying to uncover and piece together past events, historians and others rely heavily on paper records and documents.
Somewhat later, papermakers in China developed ways to make sized, coated, and dyed paper, and paper that was resistant to insect attacks.
Given the ease of making changes to electronic files and printing out these documents, new paper copies are frequently made when files are corrected or updated.
Cotton-based paper is far more environmentally friendly, as it is made from renewable materials—namely, cotton fibers taken from "waste" discarded by the textile industry.
One method of preserving newspaper pages and other materials is to copy them photographically on microfiche or microfilm.
The date or publication in a scientific journal or elsewhere—usually on paper—is generally used for establishing priority of discovery.
The heat produced by this process can easily dry the paper to less than 6-percent moisture.
Paper is also used as a packaging and carrying material, such as for envelopes, paper bags, gift wrap, cardboard boxes, and some types of food wrap.
To some extent, education is conducted orally and through the use of audiovisual and computer technologies, but paper continues to be used in large quantities.
By cutting off or tightly regulating the supply of paper for writing and printing, an authoritarian regime could control what was published and silence its dissidents.
Paper remained mostly a luxury item until the nineteenth century, when a confluence of events led to the mass production of cheap, wood-based paper.
The main developments in papermaking during the nineteenth and twentieth centuries can be summarized in terms of the following five overlapping periods.
Most magazines use coated paper, which has a smooth, shiny surface suitable for printing pictures without dispersion of the ink.
After the paper web is produced, water must be removed from it to create a usable product.
Many people have expressed concern that unless each vote is recorded on paper as well as electronically, computer error or outright election fraud may become impossible to detect if no paper records were available.
Paper is also used to make a variety of other products, such as packaging materials, cleaning supplies, wallpaper, sandpaper, filter paper, and litmus paper.
Most paper is processed with acid during its manufacture, and the acid content causes paper to disintegrate over time.
The Missel of Silos (eleventh century) is the oldest known Western paper document.
At least one company has recently tried to introduce cotton-based tissue paper as an alternative to wood-based paper.
Usually, photographs are printed first on photographic paper, then reproduced in magazines, newspapers, and books.
The mechanical properties of paperfoam are similar to those of expanded plastic packaging, but paperfoam is biodegradable and can be recycled with ordinary paper .
The manufacture of paper from recycled paper products is increasing in the industrialized world today.
Local, state, and national governments record and preserve their laws, bills, and statutes by printing them on paper.
Libraries are stocked with material printed on paper, although archival material is also stored on microfilm and electronic media.
A watermark, such as the mark used in paper currency, may be impressed into the paper at this stage.
Paper is used extensively in the fine arts, as the substrate for paintings and drawings and to make reproductions and prints.
On the other hand, documents printed on paper can be read by anyone who knows the language, without special equipment.
The American Library Association has attempted to forestall the deterioration of books by advocating that they be printed on acid-free paper.
The Fourth Amendment to the U.S. Constitution guarantees a person's rights to the security of his papers.
The presence of lignin, however, causes paper to yellow, as noted above.
Mass-produced paper is most often made using the continuous Fourdrinier process, to form a reel or web of fibers in a thin sheet.
According to a Chinese court chronicle, in 105 C.E., the court official Ts'ai Lun invented a process of producing paper from rags.
On a paper machine, this is called a "felt" (not to be confused with the traditional meaning of felt).
To manufacture high-quality sheets of paper from plant material, it is usually necessary to break down lignin, a polymeric material that gives rigidity to the plant's cell walls.
Given the ease of making changes to electronic files and printing out these documents, new paper copies are frequently made when files are corrected or updated.
People use paper to write notes, letters, memos, and diaries; to print pictures; to perform office work; and to publish newspapers, magazines, books, and journals.
Prior to the advent of the Internet and electronic publishing, it was not uncommon for repressive regimes to regulate the spread of information by controlling access to paper.
While the plane is flying forward, air moving over and under the wings is providing an upward lift force on the plane. At the same time, air pushing back against the plane is slowing it down, creating a drag force. The weight of the paper plane also affects its flight, as gravity pulls it down toward Earth.Feb 28, 2013
Some credit the Chinese with the creation of the first paper airplane over 2000 years ago. Others state that Leonardo Da Vinci invented them while he was working on the designs for his ornithopter. He was entranced by the idea of human flight, and it would be logical that he would play with paper to create an aircraft.Mar 17, 2014
Paper Airplane DIYFold the paper in half vertically.Unfold the paper and fold each of the top corners into the center line.Fold the top edges into the center line.Fold the plane in half toward you.Fold the wings down, matching the top edges up with the bottom edge of the body.More items...
Studying the motion of air around an object allows us to measure the forces of lift, which allows an aircraft to overcome gravity, and drag, which is the resistance an aircraft “feels” as it moves through the air. Everything moving through the air (including airplanes, rockets, and birds) is affected by aerodynamics.
"Yes, wingspan will affect flight, however there will be a point where the size of the wingspan will create too much weight and drag to be effective. For a glider, which a paper airplane is the more lift the glider has the longer it can fly. However, you must keep the weight and drag in check to avoid flight failure."Jul 7, 2015
Aerodynamics. As with real airplanes there are four main forces, called aerodynamic forces, that enable a paper plane to stay in the air. The first one, when you throw the plane forward, is called thrust. Lift is a force that acts on the wings and helps the plane to move up.May 8, 2015
The bigger the wingspan of the plane, the more air pushes up. ... My hypothesis was that longer paper airplane will fly farther than a wide paper airplane. I think this is true because the tip of the longer plane will cut through the air which will reduce air resistance and allow it to fly farther.Jan 10, 2014
Gravity is also what keeps us on the ground. Without gravity, we would all float away into space! With airplanes, gravity works against lift by pulling the airplane toward the ground. Thrust is the force that causes the plane to move forward through the air.