Physics Essays

The aquatic life that lives in these areas will be displaced as well. The ice that reflects sunlight back to space gets gradually depleted, making the water too hot for the inhabiting marine wildlife. On the other hand, as the temperature on earth continues to rise, the water cycle is further driven to evaporation, which allows water to be more available for storm formation but less accessible for use by plants and land animals.

Data collected from the site indicated that there were traces of chemicals, and other gases present after the eruption. The mountain located in southwestern Washington spreads and completes a sequence of ranges stretching from Mount Garibaldi (Carson p 13).

One of the most relevant topics of interest in the news these days is the issue of climate change and what humans can do to seek to ameliorate it. The ongoing debate has almost invariably been centered upon the processes that humans engage in as well as to what level these processes ultimately contribute to climate change

He supposedly ran through the streets afterwards shouting, “Eureka, Eureaka!” which mean “I found it, I found it” (Zorman). It is interesting to note that almost all we know about the contributions of Archimedes to the world of science comes from three manuscripts discovered by the historian Johan Ludvig Heiberg and designated by him as codices A, B, and C.

Most of the people relate obesity with the fast food restaurants. However, it can be claimed that fast food restaurants are not the sole reason behind obesity. There are deeper causes of obesity that need to be explored.

However, there are significant environmental threats and risks associated to the use of nuclear fuel and its wastage. Nuclear Power Stations are responsible to generate energy using Uranium for fission reaction. In this process the uranium nuclei is broken down so as to produce heat which is then converted in to electricity.

Color is a visual perception that corresponds in humans to the categories referred to as blue, red, green, yellow, and others. Color derives from the distribution of wavelength versus light power (spectrum of light) that interacts in the eye with light receptors’ spectral sensitivities (Farndon, 2003).

This method of imaging is used in functional MRI and rapid whole brain imaging. The time required to acquire an image is dependent on Tacq = Nacq x Ny x TR Where Nacq is the no. of acquisitions, Ny is the no. of phase encoding steps and TR is the repetition time.

The study tells that the world is changing, and new things keep coming up. The same applies to the scientific knowledge and understanding that constantly keeps changing. Historical events and scientific discoveries are capable of changing people’s understanding of the natural world and scientific concepts.

However, it is necessary to assume that the frequency of the true resonance will depend on the actual value (local) of the magnetic field in operations. On the other hand, McRobbie, et al, argues that it is also necessary to note that the magnetic field must be uniformly designed, and temporarily superimposed on the focal static field.

The potential drove further development of these weapons after the war to achieve higher yields and efficiency. These projects started with involvement from civil sector as well to input research from all available resources. However, concerns of security measures implemented by the private sector stalled the projects.

1. For a massive block oscillating up and down on a spring like in Fig 9.1.5, label how the following changes would affect the oscillation period. Label it as making it shorter (S), longer (L), or unchanged (U). Explain your response. Reducing the mass. (S)

Abstraction as used in Java Programming is a simplification of a complex reality through modeling classes that are appropriate to the problem, while working at the level of inheritance that is most appropriate for a certain aspect of the problem (Benjamin, 2007).

Nuclear power has been generated into motive force and electricity. In 1956, the first nuclear plant was started in England and it provided electricity in the country for forty-seven years. The most commonly used material is Uranium which is radioactive and is mined on large scale in Canada, Australia, and Kazakhstan (WNA).

I examined the beginnings of the solar system 4.6 billion years ago. In this section, many of the featured meteorite specimens illustrate the process of planetary differentiations. Fragments of Brenham meteorite are, an example of the stony iron pallasite meteorite, which has gemlike olive crystals, deep in an iron nickel alloy.

The core increased in size as it attracted other material from other sections of the Solar System resulting in an increased gravitational pull. “Eventually the core’s gravitational pull became strong enough to capture hydrogen and helium, which were abundant in the solar nebula.” That is why Jupiter consists primarily of hydrogen and helium.  

Newton’s Second Law was put up to investigate the relationship between mass force and acceleration. Finding the coefficient of static friction, µs, and the coefficient of kinetic friction, µk. requires set formulae to determine the acceleration of a body in relation to the force and mass of an object.

Throughout the course we have undertaken our research using the following parameters, observation, predictions, experiments, data collection drawing conclusions. Observation is necessary in scientific research in order to formulate a hypothesis. It allows the scientists to firstly ask questions about a certain natural incident and observe this phenomenon (‘Introduction to the Scientific Method’, n.d).

The forest ecosystems in addition to being home to this wide variety of life forms are essential in helping to generate the oxygen that is so vital to mankind. Unfortunately, man’s greed has depleted large swathes of rainforests, resulting in global warming and climate changes that threaten not only the extinction of a large number of plants and animals but also human inhabitants like the local tribal people.

Overexposure to lasers can lead to many health problems such as the destruction of human eyes. The direct light which is highly intensified can harm the eye when someone looks at it directly. There are therefore protective measures that should be taken care of to avoid the dangers of lasers. Every laser has a label showing how dangerous they are.

It is essential to shedding light on understanding why engineering and architecture are fields of great professional worth when it comes to designing processes and selecting materials that would constitute the foundation of a structure being erected. It is rather fascinating how engineers can estimate the strength and weakness of materials.

We have been utilizing petrol and diesel over a span of century and now the time has come that we switch on to another alternative fuels in an effort to save the living standard of the people of the 21st century. According to (Wald)“One of the nation’s biggest energy problems is that nearly all of its ground transportation fuel is derived from oil”.

This paper gives an explanation of the formation, occurrences, causes, and how an earthquake forms through the tectonic plate theory. The crust and the uppermost part of the mantle are made up the tectonic plates that float over the molten rocks. The plates are in a continuous motion and move over and under each other colliding at each other, which can result in a stretch, bend, and breakings.

The paper also goes into a discussion on the value that perfusion information has in clinical settings. Perfusion weighted magnetic resonance imaging or PWI makes use of energies from radio frequencies, computing technologies, and magnetic fields to generate cross-section brain images that have high levels of detail.

Examples of these tissues include the interfaces involving bones and tissues that are found in the sinus and the lungs like the maxillary, mastoid, and ethmoid sinuses. Water proton amounts found in the inhomogeneity of the local field will result in off-resonance. The frequency changes of such spins vary in different regions and different patients.

It is evidently clear from the discussion that Young’s Modulus (E) is a measure of the stiffness of an elastic material defined as the ratio of stress to the corresponding strain when a material is put under tension or compression. The most commonly used test specimens are cylindrical in shape as shown in the figure in the paper.

Albert Einstein described motion through what came to be referred to as the molecular theory of matter, also referred to as the kinetic theory of matter. This postulates that all matter would be constituted of tiny particles referred to as molecules that constantly move and bounce off each other just like the billiard balls.

This project makes nanostructured crystalline TiO2 thin films as well as composite membranes of TiO2/Al2O3 that have the properties of photocatalytic, disinfection, separation, and anti-biofouling all at the same time. Acetic acid-based sol–gel route self-assembled surfactant molecules have been used in this process.

The site descriptions for the areas provide physical views and logical dimensions as viewed on maps and the ground. The calculations of the measurements provided are a representation of the estimates that are used in solving the problem. The results positively indicate the extent of the damage and predict the next step in solving the problem.

Advances in physics have always emanated from someone’s mind: relativity theory was borne of Einstein, Heisenberg and Schrodinger came up with the quantum theory, and Beethoven saw the development of magnificent symphonies. Hence, physics and music could be considered as products of the human mind. 

This paper discussed aerodynamics, the study of forces as a result of which objects get able to fly in the air in an effort to explain the whole process of how planes fly. It is very important for everyone to be familiar with the physical demonstration or physical description of the airplane lift.

It is one member of a family of wide body long range commercial aircraft built by Boeing Commercial Airplanes. It had its first flight in 1994 when it was introduced to compete with other aircrafts such as Airbus A330 and the McDonnell Douglas DC-10. The most distinguishing features of this aircraft include large twin turbo-fan engines, a set of six wheels on each main bogey, a perfectly circular fuselage cross-section and a blade-like tail cone.

Several theoretical and experimental studies have been undertaken to investigate the feedback systems or random lasers, using semi-conductor powder and other organic materials (Marouf and Zekri, 1661). The difference between the conventional laser and the random laser has been identified in their feedback mechanisms, where the conventional laser applies a system of gain medium and cavity to give a feedback.

This monolithic monument is famous for its spectacular columnar jointing. This geological feature has a height of 1,267 feet above the surrounding terrain and 1,546 meters above the mean sea level. This is world renowned landmark of the northern Great Plains (Britton & Tamara, 4).

For almost twenty years, the NASA Ames Research Center has sent missions to study the chemical properties of this satellite and attempt to find other life forms in the solar system. Dr. Chris McKay is a planetary scientist at the NASA Ames Research Center. Most of his research focuses on the search for life in the solar system.

The Industrial Revolution only focused on the development phase; spotlights were not on the industrial waste and its effects on the environment. Hence, neglecting such a problem is the reason why the world these days is facing several environmental tribulations due to which human lives are at risk.

This particular energy can be measured through the temperature of that matter (whether it is in gas, liquid or solid form) or stated differently, the hotness or coldness of matter can known by measuring its temperature.

This paper also explains the transitional state of matter from solids to liquid, then to gas and the energy involved to break the bond. The result of this work finally gives an insight of how heat transfer relies on temperature variation to move from a source or a region of high to lower concentration.

Wind Energy in India. Natural gases have been the biggest, if not the only, source of energy for a majority of people in the world. As a result, humankind has relied on nonrenewable sources of energy to meet their energy requirement needs. However, overreliance on natural gases has seen the world witness the continued depletion of this essential commodity as the world’s natural energy resources diminish at an alarming rate.

Chlorofluorocarbons commonly referred to as CFCs were first discovered in laboratory experiments during the 1830’s and they were later discovered in nature by the year 1850. The amount of ozone in the earth’s atmosphere is measured in Dobson units. Over the years, the ozone levels in the earth have been reducing drastically from a high of 320 Dobson units in 1955 over the Antarctic to lows of 90 Dobson units in 1995.This reduction has mainly been attributed to manmade chemical pollutants.

MRI scanners are widely available in clinical routine diagnostics (Vittinghoff 2012, 45). Nevertheless, increased signal intensity changes due to higher field strength thus emphasizing on the efficacy of lofty field concentration within the medical locales.

The above micrographs represent a Secondary electron image (SE) and a Backscatter electron image (BSE) of the same region of an asbestos sample.The SE image appears more three dimensional than the BSE image. The cluster of fibers at the center in the SE image appears more rounded, while the one in the BSE appears flat.

Images in TEM are obtained by focusing an electron beam on the specimen. The electrons are absorbed, transmitted, scattered or backscattered. Depending on the kind of image required by the operator, either the transmitted electrons (called direct beam) or the scattered electrons (called diffracted beam) is selected. 

Within this dissertation, an examinatio of ferro-, ferri-, and paramagnetic fields and how they all behave distinctly and how the level of magnetism of an object can be measured using a superconducting quantum interfering device (SQUID), the Magnetic Optical Kerr Effect (MOKE), or a Vibrating Sample Magnetometer (VSM) will be examined.

For sample 238, the transmission is directly proportion to the wavelength of the projected light. As the wavelength increases, the percentage transmission increases but a rapid increase in the percentage transmission can be seen by the projection of light from wave length of 455nm to 627nm.

The Mayan prophecy states that many devastating events will occur in December 2012 at a certain time that will lead to the destruction of the earth. On one hand, the astronomical knowledge of this ancient meso-american civilization is known to be far ahead of their times.

They are all the same kind of wavy disturbance that duplicates itself over a distance called the wavelength. Electromagnetic waves comprise an amalgamation of oscillating electrical and magnetic fields, perpendicular to each other. This is complicated to visualize, however, the waveform has similar distinctiveness to other types of waves (Evans 34).

The phrase ‘global warming’ has become very much familiarized by many people in the modern world. Global warming is now being considered to be the only cause and challenge for environmental protection. Many environmental activists have provided how global warming is going to affect the environment, as they have all come to the same conclusion.

The US launched its first satellite Explorer I in 1958, soon after the Soviet Sputnik in 1957. This was the start of space race. The race is in the Cold War era when both nations strived for supremacy in every field. The period was a set of high tension incidents without direct military action.

Accurate image reconstruction depends on resonance frequency (rf) of a spin, which is achieved by strong homogenous external field and superposition of a spatially linear gradient. If these conditions are not met, then the relative positions of anatomical structures will be misrepresented in the reconstructed MRI image.