Phases of the moon Essay Example for Free

Phases of the moon Essay During night time, the moon is the clearest celestial object that could be seen any place on earth. The moon is considered as the closest celestial thing on earth and is the only natural satellite to the earth (Freudenrich, 2008). As people noticed, the moon presents changing shapes in the night sky. There are instances when one could see a full disk shape, other times it peaks a faction of its face and sometimes it vanishes for a few days. These changes in the bright side of the moon are identified as the moon’s phases. Such occurrence in the moon is not random at all rather the changes happen in a monthly basis and occurs in a predictable manner (Freudenrich, 2008). The moons phases are not the result of the earth’s shadow as many believe. The shadow of the earth may cause eclipses but the occurrence of the moons phases is a different case. Phases of the moon are dependent on its position in the alignment together with the earth and sun thus the illuminated part in the moon’s face is caused by the reflection of the light from the sun (Barrow, 2008, 1). During the 29 day travel of the moon around its orbit, its position undergoes daily changes. There are times when the moon is positioned between the earth and the sun, other times it is behind the earth this is why people see the bright parts of the moon’s surface in different angles (Freudenrich, 2008). The eight phases of the moon undergoes a cycle which is proceeded by the new moon. New moon also known as the dark moon could be seen whenever the sun and the moon are similarly positioned on the same side of the earth. The new moon is essentially not visible because it is situated in between the sun and the earth therefore the part which is illuminated faces directly to the sun while the other part which is lost in the sun’s glare is facing the earth (Barrow, 2008, 1). The second phase of the moon is identified as the waxing crescent. This appears during the second or third day. During this phase only a little part of the moon is showing up. It is characterized with a thin lunar sliver which is apparent minutes after the sunset. Such phase is termed as waxing because every night a part of the moon becomes more visible in a longer time (The phases of our moon: What can you see tonight, 2008). By the time the waxing crescent moon grows in a half full, it has then reached the third phase which is known as the first quarter. During this phase, half of the moon is already visible. However, its visibility last during the first half of the evening and eventually goes down. It is also important to note that the first quarter moon reflect the sun’s light on the right hand side (The phases of our moon: What can you see tonight, 2008). Waxing Gibbous moon is a phase when most part of the moon is already visible. At this point, the moon is clearly visible to any of its observers and only a little sliver is not illuminated. The gibbous moon could be seen clearly even before the sunset and stays in the night sky until three in the morning (Barrow, 2008, 1). The entire face of the moon is apparent during the fifth phase which is the full moon. This phase takes place whenever the earth is positioned between the moon and the earth. Full moon is the only phase where the moon is shining all throughout the night. A full moon will rise during the beginning of the night and will eventually set as morning steps in (Barrow, 2008, 1). Just like the waxing gibbous, the waning gibbous which is the sixth phase of the moon, shows all but a little part of the moon. However, in contrast with the waxing gibbous where observers are seeing much of the celestial body’s illuminated part, the waning gibbous is an indication of seeing less of the moon in the upcoming nights. This is why it was coined as â€Å"waning† gibbous (The phases of our moon: What can you see tonight, 2008). Second to the last of the moon’s phase is the last quarter. Much like the first quarter, people see a half full of the moon’s illuminated face however; the reflected light is set on the left hand corner of the moon contrary to the first quarter phase which is reflected in the right hand side (Barrow, 2008, 1). Finally the waning crescent marks the final cycle of the moon’s phase. During this period people would observer that only little of the moons face is visible. By the following nights only a smaller part of the moon can be seen in a lesser period. From there a new cycle will then proceed (The phases of our moon: What can you see tonight, 2008). Evidently the moon’s phases are dependent upon the moon’s lining position in accordance to the sun and earth. It is also noteworthy that the sequence of the phases starts with the moon’s light illumination from right to left until it extends to the full moon phase. Right after the said phase the illuminated area of the moon would retreat from right to left until it reaches the new moon phase which would mark another cycle. The phases of the moon are not complicated as it may appear. By learning how, when and why it occurs enables an individual to know that such event is not random but a predictable event.

William Ramsay Essay -- essays research papers fc

William Ramsay William Ramsay was born on the second of October, in the year 1852. William, and his parents, William and Catherine, lived in Glasgow, Scotland. William Ramsay performed his work in his native town, until 1870 when he went to Tà ¼bingen and earned his doctorate in 1872. When returned to Scotland later that year, he became an assistant chemist at the Anderson College in Glasgow. Eight years later, he was appointed principal and professor of chemistry at London University, which held until his retirement in 1913.   Ã‚  Ã‚  Ã‚  Ã‚  Ramsay’s earliest works were in the field of organic chemistry. In his early experiments he showed that the alkaloids are related to pyridine, which he synthesized in 1876 from acetylene and prussic acid. Some of his first work was related with the study of a new Bismuth mineral, which was only recognized as a metal until the 18th Century. William Ramsay also verified Roland Eà ¶tvà ¶'s law for the constancy of the rate of change of molecular surface energy with temperature. Ramsay published his work in accordance to Dobbie, on the decomposition products of the quinine alkaloids. William was very successful and submitted many contributions to physical chemistry, being mostly on Stoichiometry and Thermodynamics. He also commenced the 1880’s with his work with Sidney Young on evaporation and dissociation.   Ã‚  Ã‚  Ã‚  Ã‚  In 1892, a British physicist named Lord Rayleigh asked chemists to explain the difference bet...

Financial Management – Risk Analysis

There are also reputation threats such as damage to the company's reputation in the market or from employee loyalty. You also have procedural risk, project, and financial, technical risk. Natural and political risk as well. Company decision makers must think through the systems, organizations or structures they operate, and analyze risks to any part of them. Once the threats have been acknowledged, the next step is to work out the probability of the threat being carried out and to evaluate its impact.A company must workout the value of risks It faces, so that the company can start to look at ways of dealing with them. When a company does this, It Is critical to choose cost effective methods. Risk analysis allows an organization to examine the risks that it faces. It Is based on a well thought out plan of attack In thinking through threats, followed by an evaluation of the probability and cost of Incidents occurring. Risk analysis forms the basis for risk management and crisis prevent ion. Five Interview Questions- Week SIX 1 . How would you Identify threats facing your company? . After Identifying the threats facing your company, how would you go about In assessing Its Impact? 3. How would you go about managing risk to your company? 4. After carrying out a risk analysis would you continue with regular reviews? 5. Why Is risk analysis so Important for a company? Financial Management – Risk Analysis By Judicial threats such as damage to the company's reputation in the market or from employee A company must workout the value of risks it faces, so that the company can start to kook at ways of dealing with them.When a company does this, it is critical to choose it faces. It is based on a well thought out plan of attack in thinking through threats, followed by an evaluation of the probability and cost of incidents occurring. Risk Five Interview Questions- Week Six 1 . How would you identify threats facing your company? 2. After identifying the threats facing yo ur company, how would you go about in assessing its impact? 5. Why is risk analysis so important for a company?

The Advantages of Mobile Commerce Essay - 1326 Words

What is M-commerce? The last decade has witnessed a lot of growth of mobile communication devices and wireless technologies across the globe. This has led to a change in the way many activities are conducted and opened the way for m-commerce, which is e-commerces next evolutionary stage. The significant power of m-commerce is primarily as a result of the ability to connect wireless devices anytime, anywhere (The Future of Mobile Payment Systems : Rise of the Mobile Wallet 2012-2017 [Electronic version], 2011). Mobile commerce also known as M-commerce refers to electronic transactions and communications conducted using mobile devices such as laptops, PDAs and mobile phones, and typically with a wireless connection (Dave, 2011). Mobile†¦show more content†¦M-commerce offers benefits such as quick access to time sensitive information and instant connectivity to the internet. It also enables businesses to offer personalized and localized content as mobile devices enable them to have access to consumer’s preferences, status and location. M-commerce plays a key role in expanding the audience of a business on a massive scale, especially in developing countries where most people access the internet on mobile devices because they cannot afford a PC. Some businesses like Amazon and EBay have felt the huge impact of m-commerce. Though for most retail companies, sales via mobile devices is still a small fraction of total sales. When looking at the world as a whole, the potential for m-commerce is astounding. A lot of retailers are seeing increased sales via mobile devices with a larger percentage of those sales coming from tablets and less from Smartphones. M-commerce currently accounts for over 11% of all e-commerce sales and theses figure are still rising. 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