Science Essays
4,476 Science Free Papers: 3,841 - 3,870
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The Dark Ages : Were They Darker Than We Imagined
As we approach the end of the Second Millennium, a review of ancient history is not what you would normally expect to read in the pages of Universe. Indeed, except for reflecting on the AD 837 apparition of Halley's Comet (when it should have been as bright as Venus and
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The Debate over the Definition of Danger, and How It Effects Global Warming
The Debate Over the Definition of Danger, and How it Effects Global Warming" In the February 1st edition of the New York Times, journalist Andrew C. Revkin discusses rising threat of global warming, and more importantly, the disagreement between various nations and institutions upon the definition of "dangerously high global
Rating:Essay Length: 517 Words / 3 Pages -
The Decaffeination of Coffee
Every day, millions of people around the world drink coffee. While most enjoy it in its natural state, as a mixture used without separation, many prefer 'decaf', as it does not provide them with unnecessary energy, and some cannot have excess amounts of the stimulant as it causes adverse effects.
Rating:Essay Length: 766 Words / 4 Pages -
The Decline of the Dollar
“From now on, I will only sign contracts in euros because today, we never know what can happen to dollar.” These words were pronounced one week ago by the world’s nÐ'o1 top-model Gisele BÐ"јndchen. Does this reflect an unfounded rumor fear and rumor or do we really have reasons to
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The Decriminalization of Medicinal Marijuana
The Decriminalization of Medicinal Marijuana For the past fifty years, heated debates over the topic of the decriminalization of marijuana have been a great controversy among politicians. Some politicians believe that marijuana for the use of medicine should be outlawed. As Congressman Bob Barr in his debate with radio talk
Rating:Essay Length: 884 Words / 4 Pages -
The Dehydration of a Bluestone
The Dehydration of a Bluestone February.28.2008 Purpose • To determine the value of X in CuSO4 • xH2O. Materials • Crucible • Blue Stone • Bunsen Burner • Bunsen Lighter • Test Tube • Water • Rheostat • Clay Triangle • Electronic Balance Procedure A clean crucible was taken and
Rating:Essay Length: 667 Words / 3 Pages -
The Dehydration of Cyclohexanol
The dehydration of cyclohexanol, specifically by way of semi-microscale is the product from an E1 reaction that also results in two isomeric alkenes emerging by virtue of Zaitsev’s rule that favors the most stable/ alkene meaning more alkyl groups bonded to the carbons. During the experiment color change was witnessed
Rating:Essay Length: 315 Words / 2 Pages -
The Destruction of Our Environment
One of the greatest arguments of philosophy and the scholastic disciplines of the sort has been the debate on the degree of influence that nature has on the growth and development of human beings and the civilizations that define them. By examining the interactions of the environment and the living
Rating:Essay Length: 1,847 Words / 8 Pages -
The Detailed Microstucture of Primary Materials
A Full Laboratory Report on: The Detailed Microstucture of Primary Materials This report presents a study on the microstructure of 8 material samples using the proper optical microscopy techniques. Emphasis is given in sample preparation, the right use of transmitting and reflecting optical microscopy methods, and a detailed analysis
Rating:Essay Length: 4,183 Words / 17 Pages -
The Deterioration of Water Quality
Abstract The deterioration of water quality is a worldwide problem. Water pollution affects nearly every living organism, from humans, animals, to water fleas. In this laboratory experiment, we tested the LD50 of several household items. For our group in particular we tested the effects of CLR and Wisk Detergent by
Rating:Essay Length: 1,301 Words / 6 Pages -
The Development of Cloning
The development of cloning Bioethics, which is the study of value judgments pertaining to human conduct in the area of biology and includes those related to the practice of medicine, has been an important aspect of all areas in the scientific field (Bernstein, Maurice, M.D.). It is one of the
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The Difficulties in Defining Whether a Person Can Be Mentally Ill?
In this essay an historical look at the perception of mental illness will be reviewed in conjunction with how society acuity towards mental illness has changed though time, it will then discuss the society current concept of mental health. A consideration of the current classification and diagnosis systems followed by
Rating:Essay Length: 3,788 Words / 16 Pages -
The Digestive System
THE DIGESTIVE SYSTEM Divided into two parts: * Alimentary tract o Or Gastrointestinal tract o Hollow tube from mouth to anus o Food material inside the tract is considered to be outside the body b/c the canal is open to the external environment at both ends o It digests food
Rating:Essay Length: 3,849 Words / 16 Pages -
The Digestive System
THE DIGESTIVE SYSTEM The digestive system consists of a series of hollow organs joined in a long twisting tube from the mouth to the anus. Inside this tube is a lining called the Mucosa (this produces mucus and on underlying smooth muscle layers that contract to move food). There are
Rating:Essay Length: 714 Words / 3 Pages -
The Dinosauria
The Dinosauria Dinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse modes of living. The term "Dinosauria" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles,"
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The Discovery of Fluorine
The isolation of fluorine had challenged chemist for many years, taking the lives of at least two scientists in the process. Fluorine receives its name from the Latin, fluo, meaning flow. The first real attempt to free fluorine, was done by a chemist by the name of Humphyry Davy, between
Rating:Essay Length: 333 Words / 2 Pages -
The Discovery of Neptune
The Discovery of Neptune Neptune was discovered in September 1845. It was discovered by means of mathematics before being seen through a telescope. It began in 1843 when John Adams, a young English astronomer and mathematician, began working to find thew location of the unknown planet. Adams predicted the
Rating:Essay Length: 323 Words / 2 Pages -
The Disproval of Spontaneous Generation
From the beginning of time it was believed that living things could come from nonliving things. This process was known as spontaneous generation. However, in the middle of the 17th century and then through the next 100 years, this idea was disproved by three important experiments. We now know that
Rating:Essay Length: 567 Words / 3 Pages -
The Distillation of Ethanol from 20ml Gin Through Simple and Fractional Distillation
The Distillation of Ethanol from 20mL Gin through Simple and Fractional Distillation *Villafuerte, Arman Joseph F. Villaseñor, Jose Manuel J. Wahab, Dana Trisha N. Department of Biology, College of Science, University of Santo Tomas Abstract The experiment aims to separate and calculate in percentage the ethanol content of Gin by
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The Distortion Analyser, Thd , and Sinad Lab Report
Table of Contents Page Number 1.0 Theory............................................................................................1 1.1 The Distortion Analyzer, THD, and SINAD.....................................2 1.2 AM Receiver Design..................................................................2 2.0 Lab Objectives.................................................................................2 3.0 Procedure.......................................................................................3 3.1 Distortion Analyzer, THD, and SINAD Procedure ...........................3 3.2 AM Receiver Design and Test Procedure......................................4 4.0 Calculations.....................................................................................6 4.1 Distortion Analyzer, THD, and SINAD Calculations.........................6 4.2 AM Receiver
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The Divide
Anthony Paris September 12, 2006 SOC244 "Matters of Race: the Divide" The documentary, "The Divide", was very informative and enlightening. It focused on a specific area in America (Siler City) and the many effects that race has on it. The video focused on Siler City, North Carolina because it has
Rating:Essay Length: 594 Words / 3 Pages -
The Doctor
The Doctor Here is a film that portrays what happens to one member of the medical community when he faces problems normally confronted by patients. The doctor is a cool, self-centered surgeon who is in total control of his successful life until he is diagnosed as having cancer of
Rating:Essay Length: 405 Words / 2 Pages -
The Dust-Cloud Hypothesis
The universe contains huge clouds made up of very large amounts of dust and gas. About 6,000,000,000 (billion) years ago, one of these clouds began to condense. Gravitation--the pull that all objects in the universe have for one another--pulled the gas and dust particles together. As the dust cloud condensed,
Rating:Essay Length: 282 Words / 2 Pages -
The Early Petroleum Industry in the United States
The Early Petroleum Industry in the United States Ancient Egyptians used bitumen for embalming, the Assyrians used it in building, the Chinese for heating and lighting, and for centuries fishermen have used it to make their boats watertight. Naturally, man being what he is, was not content to let well
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The Earth
Chapter 1: The Nature and Method of Economics Econ 10LS Jan. 25th 2006 What is Economics? Economics: Social science concerned with the efficient use of scarce resources to achieve the maximum satisfaction of economic wants Economic perspective Economic way of thinking Economic Perspective Three elements Scarcity (limited) and Choice Opportunity
Rating:Essay Length: 544 Words / 3 Pages -
The Earthquake Machine
Science Article Summary The Earthquake Machine Author -UNKNOWN Earthquakes! What do you think about when you hear that word? Questions pop into your head, the main one is "Why earthquakes happen"? It all started out on April 18, 1906, there was an earthquake called The Great San Francisco Earthquake.
Rating:Essay Length: 356 Words / 2 Pages -
The Earthworm...Live Food
The idea of feeding living animals to birds is not new, but only in recent years has it become a trouble-free option for feeding birds in the garden. Mealworms are the usual live food provided, but waxworms can also be bought for this purpose. Neither of these creatures is actually
Rating:Essay Length: 496 Words / 2 Pages -
The Ebola Virus
Life is a biological internet in which viruses travel like messages, moving at high speed from node to node and from city to city. They are diverse and wild spread in every plane on the surface of the earth. Ironically, such invisible creatures have a substantially enormous effects on human
Rating:Essay Length: 907 Words / 4 Pages -
The Ebola Virus
The Ebola Virus History of, Occurrences, and Effects of Ebola, a virus which acquires its name from the Ebola River (located in Zaire, Africa), first emerged in September 1976, when it erupted simultaneously in 55 villages near the headwaters of the river. It seemed to come out of nowhere, and
Rating:Essay Length: 1,224 Words / 5 Pages -
The Ebola Virus
Ryan Rodney Jan Decker March 24, 2005 The Hot Zone Synopsis: Discussion: The Ebola Virus is an extremely deadly virus that can kill its hosts with in a few weeks. The infected starts by having dizziness and headaches, then proceeds to give fatigue, sweating, and red eyes caused by bleeding
Rating:Essay Length: 299 Words / 2 Pages