 |
In , particles ionize gas atoms. The tube
contains a gas at low pressure. At one end of the tube is a very thin 'window'
through which charged particles or gamma rays pass. Inside the tube is a copper
cylinder with a negative charge. A rigid wire with a positive charge runs down
the center of this cylinder. The voltage across the wire and cylinder is kept
just below the point at which a spontaneous discharge, or spark, occurs. When a
charged particle or gamma ray enters the tube , it ionizes a gas atom between
the copper cylinder and the wire. The positive ion produced is ...
Often times, scientists only have a small amount of DNA to deal with when doing genetic research or studies. In these situations, scientists can do one of several things. One is to just try to work with it anyway, but this is nearly impossible (depending on how much there is). Ther are a couple other processes they can use, or they can use PCR....
Killer Whale, a name to strike terror in the hearts of sea ferers in all the oceans of the world. The Romans called it Orca, meaning "The demon from Hell." Originally, american fisherman referred to them as "Whale Killer" because many fisherman reported seeing pods of them attacking and killing Humpback, Gray, and even Blue Whales. Somehow the name...
Plants and animals in the temperate zones respond in different ways to the amount of daylight in 24-hour periods. This response to day length is called photo periodism. It controls many activities, among them is the flowering of plants. The ability to respond to day length is linked to an inner, light-sensitive circadian rhythm. In the tempera...
One of the most controversial areas associated with the global problem of deforestation is the Pacific Northwest of the US. The problem can be broken down into several issues that all tie in together. These include the near extinction of the Northern Spotted Owl, the "business" aspect of logging versus the environmental aspect, and the role of the...
? CONTENTS I. ABSTRACT II. INTRODUCTION/LITERATURE RESEARCH 1. PROBLEM 2. HYPOTHESIS III. PROCEDURE/MATERIALS LIST IV. RESULTS V. CONCLUSIONS IV. BIBLIOGRAPHY ABSTRACT The characteristics of crystals have always fascinated man. Man has always been interested in the appearance of them and some of the exotic locations where ma...
Physics 009 Professor Arns The human population is currently using up its fossil fuel supplies at staggering rates. Before long we will be forced to turn somewhere else for energy. There are many possibilities such as hydroelectric energy, nuclear energy, wind energy, solar energy and geothermal energy to name a few. Each one of these choices h...
As the millennium approaches we come closer and closer to what some say could mean the end of civilization as we know it. What is this great event that would have such an impact on the world that it could end civilization? The problem is a simple computer bug refereed to as the Y2K bug but its ramifications could be immense. This computer bug ha...
"Alcohol is a socially acceptable, legal drug that is consumed by the majority of Americans without problems to themselves or others (Milgram xiii)." Misuse of alcohol can lead to alcoholism, one of the most widespread and complex problems in America. The reasons some people become dependent on alcohol and others do not are unknown. Many healt...
There are several different methods to achieve communication between computers. In the case of the Internet, most people use a telephone modem to establish a connection between their computer and the computer that gives them access to the Internet. Normally, the computer that gives them access to the Internet, referred to as an ISP (Internet Serv...
A new phase of matter has been discovered seventy years after Albert Einstein predicted it's existence. In this new state of matter, atoms do not move around like they would in an ordinary gas condensate. The atoms move in lock step with one another and have identical quantum properties. This will make it easier for physicists to research the my...
Flight is one of the most important achievements of mankind. We owe this achievement to the invention of the airfoil and understanding the physics that allow it to lift enormous weights into the sky. All flight is the result of forces acting upon the wings of an airplane that allow it to counteract gravity. Contrary to popular belief, the is not...
New York Times April 11, 1996 The manatee population has suffered a devastating blow so far this year. About 221 manatees have been found dead already. Out of those 221, 128 have no obvious cause of death. Marine biologists have been unable to find the cause of these deaths. They suspect that the Red Tide off of the coast of southwest Florida...
Whether it be through intensified media attention, or due to the efforts of prominent scientists and other members of society, we have become increasingly aware of the have on the global environment. However, as Carl Sagan points out in 'Pulling the Plug on Mother Earth' awareness is not enough, nor is society's response to the catastrophic impli...
What is a stem cell? Stem cells have the ability to divide for indefinite periods in culture and to give rise to specialized cells. They are best described in the context of normal human development. Human development begins when a sperm fertilizes an egg and creates a single cell that has the potential to form an entire organism. This fertilize...
