Astronomy 101 - Learning About Stars

Astronomy 101 - Learning About Stars Astronomers are often asked about objects in the cosmos and how they came to be. Stars, in particular, fascinate many people, particularly because we can look out on a dark night and see so many of them. So, what are they? Stars are massive shining spheres of hot gas. Those stars you see with your naked eye in the night sky all belong to the Milky Way Galaxy, the huge system of stars that contains our solar system. There are around 5,000 stars which can be seen with the naked eye, though not all stars are visible at all times and places. With a small telescope, hundreds of thousands of stars can be seen. Larger telescopes can show millions of galaxies, which can have upwards of a trillion or more stars. There are more than 1 x 1022 stars in the universe (10,000,000,000,000,000,000,000). Many are so large that if they took our Suns place, they would engulf Earth, Mars, Jupiter, and Saturn. Others, called white dwarf stars, are around the size of Earth, and neutron stars are less than about 16 kilometers (10 miles) in diameter. Our Sun is about 93 million miles from Earth, 1 astronomical Unit (AU). The difference in its appearance from the stars visible in the night sky is due to its close proximity. The next closest star is Proxima Centauri, 4.2 light-years (40.1 trillion kilometers (20 trillion miles) from Earth. Stars come in a wide variety of colors, ranging from deep red, through orange and yellow to an intense white-blue. The color of a star depends on its temperature. Cooler stars tend to be red, while the hottest ones are blue. Stars are classified many ways, including by their brightness. They are also divided into brightness groups, which are called magnitudes. Each star magnitude is 2.5 times brighter than the next lower star. The brightest stars now represented by negative numbers and they can be dimmer than 31st magnitude.   Stars - Stars - Stars Stars are primarily made of hydrogen, smaller amounts of helium, and trace amounts of other elements. Even the most abundant of the other elements present in stars (oxygen, carbon, neon, and nitrogen) are only present in very small quantities. Despite the frequent use of phrases like the emptiness of space, space is actually full of gases and dust. This material gets compressed by collisions and blast waves from exploding stars, causing lumps of matter to form. If the gravity of these protostellar objects is strong enough, they can pull in other matter for fuels. As they continue to compress, their internal temperatures rise to the point where hydrogen ignites in thermonuclear fusion. While the gravity continues pulling, trying to collapse the star into the smallest possible size, the fusion stabilizes it, preventing further contraction. Thus, a great struggle ensues for the life of the star, as each force continues to push or pull. How Do Stars Produce Light, Heat, and Energy? There are a number of different processes (thermonuclear fusion) which make stars produce light, heat and energy. The most common happens when four hydrogen atoms combine into a helium atom. This releases energy, which is converted to light and heat. Eventually, most of the fuel, hydrogen, is exhausted. As the fuel begins to run out, the strength of the thermonuclear fusion reaction declines. Soon (relatively speaking), gravity will win and the star will collapse under its own weight. At that time, it becomes what is known as a white dwarf. As the fuel further depletes and reaction stops all together, it will collapse further, into a black dwarf. This process can take billions and billions of years to complete. Toward the end of the twentieth century, astronomers began to discover planets orbiting other stars. Because planets are so much smaller and fainter than stars, they are difficult to detect and impossible to see, so how do scientists find them? They measure tiny wobbles in a star’s motion caused by the gravitational pull of the planets. Although no Earth-like planets have been discovered yet, scientists are hopeful. Next lesson, well take a closer look at some of these balls of gas.

Breach of Contract Case Study

Breach of Contract Case Study MOHANA DIGHE ISSUE- Washington (January 6, 2016, 4:14 PM EST) – A driver for Uber hit the ride-offering organization to a claim a breach of contract in California government court, affirming in a proposed class activity that Uber neglected to pay drivers the winter advancement as per its reported tenets in the advertisement. Kimberly Berger claims that Uber did not pay California drivers the full rates they were guaranteed under the organization’s â€Å"Winter Warmup† advancement, which ensured least rates to taking an interest drivers who met an arrangement of conditions. As indicated by the grumbling, the advancement ensured drivers least hourly rates for specific periods on the off chance that they acknowledged no less than 90 percent of excursions, arrived at the midpoint of no less than one trek a hour and were online for no less than 50 minutes of consistently worked. The base hour rates extended from $16 every hour to $26 every hour, in view o f the day and age, as indicated by the grievance. The most astounding hour rates secured Friday and Saturday evenings. The suit claims Berger, and different drivers in the proposed class, met the states of the Winter Warmup advancement however were not paid the guaranteed rates. In particular, the suit claims, Uber paid the expenses as a normal gross hourly rate rather than a base rate for every hour. The organization likewise subtracted expenses from the promoted rates, the suit claims. â€Å"Therefore, the genuine hourly rates for pinnacle, normal, and nonpeak hours, were $20, $12, and $10 every hour, and not the $26, $20, and $16 every hour promoted,† the suit affirms. Berger claims the instalment hones broke Uber’s agreement with its drivers and furthermore constituted unjustifiable business hones under California state law. Berger is looking for unspecified harms for the benefit of herself and the proposed class, lawyers charges and an assertion that U ber’s instalment rehearses for the advancement abuse California state law. She requested that the judge confirm a class of Uber drivers in California that took part in the advancement. The suit did not determine how vast Berger expects the class will be. The organization asserts its drivers are self employed entities, not workers, which a class of drivers have debated in a different claim. Uber approached a month ago for a stay in that claim while the organization requests the court’s current deciding that its 2014 and 2015 discretion understandings are unenforceable. Uber did not instantly react to a demand for input (Uber Driver Says Co. Breached Promotion Contract – Law360). Use of Agreement Law- (a) APPLICABLE BREACH OR VIOLATION – This segment applies if there should be an occurrence of break or infringement of a portrayal or stipulation incorporated into an agreement under area 6502 of this title. (b) LIQUIDATED DAMAGES – no twithstanding harms for some other break of the agreement, the gathering in charge of a rupture or infringement depicted in subsection (an) is obligated to the National Government for the accompanying sold harms: (1) A sum equivalent to the total of $10 every day for every person under 16 years old and each imprisoned individual intentionally utilized in the execution of the agreement. (2) A sum equivalent to the entirety of every underpayment of wages due a representative occupied with the execution of the agreement, including any underpayments emerging from derivations, discounts, or discounts. (c)CANCELLATION AND ALTERNATIVE COMPLETION – Notwithstanding the Central Government being qualified for harms depicted in subsection (b), the office of the Unified States that made the agreement may scratch off the agreement and make open-showcase buys or make different contracts for the culmination of the first contract, charging any extra cost to the first temporary worke r. (d) RECOVERY OF AMOUNTS DUE.- A sum due the Central Government on account of a break or infringement depicted in subsection (a) might be withheld from any sums owed the contractual worker under any agreement under area 6502 of this title or might be recuperated in a suit brought by the Lawyer General. (e) EMPLOYEE REMBURISMENT FOR UNDERPAYMENT OF WAGES.- A sum withheld or recuperated under subsection (d) that depends on an underpayment of wages as depicted in subsection (b)(2) should be held in an uncommon store account. On request of the Secretary, the sum might be paid straightforwardly to the come up short on worker on whose record the sum was withheld or recuperated. Be that as it may, a representative’s claim for installment under this subsection might be engaged just if made inside one year from the date of genuine notice to the temporary worker of the withholding or recuperation. REMEDIES FOR BREACH OF CONTRACT- Equitable Remedies   Equitable Reme dies are those that are forced when cash harms would not enough cure the non-breaking party. The accompanying sorts of fair cures might be accessible in the given case:    Particular Execution Particular execution is a request by the court that requires the breaking gathering to do the agreement as it was initially composed. This kind of cure is uncommon. In any case, it might be requested in specific conditions. For instance, particular execution might be forced when the topic is one of a kind, for example, an acclaimed painting or a particular bit of property. Courts are reluctant to request particular execution since it requires the progressing observing by the court of the agreement. Rescission Rescission of the agreement is a cure that permits the non-breaking gathering to wipe out his or her duties under the agreement. This cure may be accessible when the agreement depended on misrepresentation or an error by either of the gatherings. It is additionally accessible if both sides like to scratch off the agreement and give back any cash that had been progressed as a feature of the agreement. Reorganization Reorganization permits two gatherings to change an agreement so that it all the more precisely reflects what the gatherings plan. This cure requires that the agreement be substantial. It might be accessible when one of the gatherings had a mixed up comprehension about a material term of the agreement.    Legitimate Cures Legitimate cures regularly appear as money related harms that are granted to help make the blameless party entirety. A few cases of legitimate cures are examined underneath. Compensatory Harms Compensatory harms are those that are intended to remunerate the non-breaking party for the rupture. These incorporate desire harms and considerable harms. Desire harms are those that give the non-rupturing party the money related assets that he or she would have gotten had the agreement been performed. These harms are n ormally in view of the agreement itself or the honest estimation of the topic of the agreement. For instance, compensatory harms might be the sum vital for the non-breaking gathering to buy a substitute item that is proportional to the one contracted for. In the event that the agreement was for an offer of merchandise, compensatory harms are generally the contrast between the agreement cost and the market estimation of the products. These harms likewise comprise of the costs important to make the non-rupturing party entire after the break, for example, promoting costs to publicize the items that the breaking party neglected to pay for. Be that as it may, the non-rupturing party by and large has an obligation to relieve his or her misfortunes. Significant harms are those harms that repay the guiltless party for backhanded costs that came about because of the break. They regularly result from uncommon conditions that are included in the agreement that may not be normally unsurpr ising. For instance, a honest gathering may approach to be repaid for the loss of business benefits that got from not having admittance to the fundamental materials to create an item for an outsider. All together for the honest party to get these harms, he or she should demonstrate that this misfortune was sensibly predictable to both sides when they composed the agreement and the misfortune was an immediate consequence of the break. Liquidation Harms In a few contracts, particular harms are pre-decided. These harms are called exchanged harms. They are normally some portion of agreements where it is hard to decide the real sum that a gathering was harmed because of a break, for example, a rupture of an agreement not to contend. Reformatory Harms Reformatory harms are intended to rebuff a blameworthy gathering keeping in mind the end goal to keep that gathering or others from taking part in comparative direct later on. Be that as it may, corrective harms more often than n ot require a more grounded goal than is essential in standard rupture of agreement cases. For instance, to be granted reformatory harms, an offended party may host to demonstrate that the rupturing gathering acted in a noxious or fake matter. A few states particularly restrict offended parties from recuperating correctional harms on break of agreement cases. Lawyer Expenses and Expenses The common party in a break of agreement case might have the capacity to gather lawyer charges and costs that he or she caused keeping in mind the end goal to realize lawful activity. A few states just permit these harms on the off chance that they are particularly accommodated in the agreement (hg.org).

Harlem Renaissance Research Paper Example | Topics and Well Written Essays - 2250 words

Harlem Renaissance - Research Paper Example In addition, the liberated African Americans, after the America civil war, sought for a safe place to explore their new identities, but at this time as free men and women. This is how they the African Americans found themselves in Harlem. Harlem grew to become the home of the best and brightest minds of the 20th century, with people like Langston Hughes, Walter Weldon and the parent figure of W.E.B Du Bois, hence giving birth to a cultural revolution; hence the place earned its name ‘the capital of black America’. This paper would build up the constituents’ culture, literacy, and artistic explosion that defined the birth of the Harlem Renaissance2. The burgeoning African- American middle class of 1900s began to fight for a new political agenda that advocated for racial equality. This became one the roots that came in support of the formation of the Harlem Renaissance. New York was the epicenter for all these actions. In New York, three of the largest civil rights in America by then had established their headquarters there.Among the notable ringleaders of these, the civil rights movement was the Black historian, a sociologist, and a Harvard scholar W.E.B Du Bois3. The 1905 meeting that Du Bois organized with other civil rights movement leaders to discuss the challenges facing the black community served as the game changer in awakening the African Americans. This gave birth to the resolution of 1909 by the group to form the National Association for the Advancement of Colored People (NAACP). The aim of this organization, purely made by blacks was to promote the civil rights and the fight against African-American disenfranchisement. In many aspects, the Black American community fell short of so many social rights, not even privileges in the oppressive south, as opposed to the whites. Due to this lack of platform to voice

Job search project Assignment Example | Topics and Well Written Essays - 1250 words

Job search project - Assignment Example In addition, the work will present an in-depth study of the present shortage and the reasons behind. Environmental health specialists are professional health workers mandated to ensure safe and healthy condition within residential, commercial, industrial and even recreations settings. These professionals also carry the name environmental health or safety inspector. Their primary duty involves checking the presence of any health hazards and making proper plans to sort out the problems. Majority of environmental safety inspectors are found working in government institutions that monitor federal, state and even local safety and environmental policies. This takes in such duties as monitoring factories and plants for industrial wastes or any other pollution; inspecting hotels for cleanliness; and inspecting day cares institutions, schools and nursing homes to find if there is any heath hazards that may include lead paint or radon. In addition, environmental safety inspectors also check ho w hospitals deal with biological waste while at the same time ensure recreational facilities such as swimming pools are in good condition to be used by the public(NEHA). State employed environmental safety inspectors issue certificates and permits, which qualify that a certain recreational facility, place of business or residence has met the required safety and health standards to begin its operation. On the other hand private environmental health inspectors found working in private companies serve to keep the firms facilities within the standards prescribe by the government. Here, they ensure that environmental health specialists send from the government do not any violations of the set policies. In many cases, the environmental health inspector job requires that one possesses a minimum qualification of a bachelor’s degree in environmental science. Addition qualification in any course related to biology, chemistry, physical science, public health and environmental engineerin g is of great significant. Individuals intending to work with government agencies need to undertake a certification offered by the concerned federal, state or local institution. Such is the case that many states have set up a licensing board to examine possible candidates who are then granted certification after going through the process successfully. In this case, the certification granted depends much on the nature of the concerned facilities. Certification is also possible through the National Environmental Health Association (NEHA). In addition to the academic qualifications, a competent environmental health inspector should demonstrate certain skills deemed vital for this profession. First, he/she should display strong employee relation and good interpersonal skills. This will help one relates with other stakeholders in this field without much difficulties. Secondly, a professional in this field needs to have good skills in both verbal and written communication. Such is the cas e that this job will require proper record keeping and at the same time good presentation of the findings. Other important skills required are problem solving, analytical and organizational that will help in accomplishing the task given easily and more effectively (NEHA). Lastly, an environmental hea

Free Argumentative Essays: We Need Trauma Centers :: Argumentative Persuasive Essays

We Need Trauma Centers Due to the advanced state of industry a number of devices and machines have come into common use which, often through intentional misuse, result in very serious injuries. Two examples are the automobile and the gun. When a serious injury results from something such as an automobile accident the victim usually has a very short period in which to obtain emergency medical intervention before the shock resulting from his or her injuries is irreversible. Usually this period of time is not longer than one hour, and is often less. If measures to treat shock and the cause of the shock, massive internal bleeding for instance, are not instituted within this first hour after the injury the mortality rate increases exponentially every fifteen to twenty minutes. The state of emergency medical care currently practiced in this community involves an excellent pre-hospital phase under the jurisdiction of Los Angeles City paramedics. The paramedics have jurisdiction of about thirty-five emergency rooms to which their patients can be transferred after beginning medical treatment at the scene of the accident. This is where the problem occurs. To provide the best possible emergency care at the hospital, two factors play an important part. First, the staff must work on at least two to three severely injured patients daily to maintain their technical skill at top level. Second, surgeons and operating rooms must be available within 15 minutes notice, twenty-four hours a day, 365 days a year. In the San Fernando Valley, this level of care is not met anywhere. In greater Los Angeles, this level of care is met at less than six hospitals. The problem involves too many emergency rooms for the population. The cost of maintaining an operating room on fifteen minute standby day and night would put hospitals out of business, since even the busiest hospitals only receive three to four severely injured patients each week. The patient load would not support the very high cost of this service. The best remedy to this situation would be to designate "Trauma Centers". Instead of having thirty five emergency rooms taking care of the critically injured patients three or four selected emergency rooms would be geographically designated to receive all of the critical patients.

Reluctant Users Slow O Take Up Videoconferencing Essay

The public relations executive was enthusiastic on the phone. The IT company he represented had started installing green data centres and energy-efficient computers. Would I like to fly to California to see for myself? That would be a 2500 mile round trip from my home in Midwestern Canada. According to the online calculator from Terapass, the trip would release 1,1232 pounds(about 500 kilos) of CO2 into the atmosphere. ‘If you’re really into green technology, couldn’t we do a videoconferencing instead? ’ I asked. ’Sure,’ said the PR person. We are totally into green issues’. He promised to arrange it. Months laters, nothing had happend. The high-tech industry is quick to praise the benefits of flexible communication, but videoconferencing is one area where things have failed to live up to the hype. ‘Videoconferencing has not significantly displaced travel,’ say Frank Modruson, CIO for global technology consulting firm Accenture. As the IT sector continues to push its green values, this mismatch between rhetoric and reality is becoming harder to ignore. So why are relatively few people using videoconferencing? Andrew Davis, managing partner at online collaboration market research firm Wainhouse, says the technology is let down by usability. For many peple, videoconferences are just too difficult to set up. This is why Nortel is emphasizing the services side. ‘The barrier isn’t the technology. It’s the services around that technology,’ says Dean Fernades, the company’s General Manager of Network Services. Nortel is one of several companies getting into a relatively new segment of the videoconferencing market called telepresence. Specially equipped rooms enabled people to appear as if they are sitting across the table, with life-size video representations of remote colleagues in high-definition video. Customers pay to use Nortel’s facilities, which can also handle video filming, enabling the room to double as a production facility for corporate TV, for example. Nortel will also handle post-production tasks such as editing. Accenture, on the other hand, opted for the capital investment route. Mr Modruson said it is installing rooms in Chicago and Frankurt, and hopes to roll out another 11 cities in the next few months.

The Importance of the Supply and Demand Model

Forming the basis for introductory concepts of economics, the supply and demand model  refers to the combination of buyers preferences comprising the demand and the sellers preferences comprising the supply, which  together determine the market prices and product quantities in any given market. In a capitalistic society, prices are not determined by a central authority but rather are the result of buyers and sellers interacting in these markets. Unlike a physical market, however, buyers and sellers don’t have to all be in the same place, they just have to be looking to conduct the same economic transaction. It’s important to keep in mind that prices and quantities are the outputs of the supply and demand model, not the inputs. It’s also important to keep in mind that the supply and demand model only applies to competitive markets — markets where there are many buyers and sellers all looking to buy and sell similar products. Markets that don’t satisfy these criteria have different models that apply to them instead. The Law of Supply and The Law of Demand The supply and demand model can be broken into two parts: the law of demand and the law of supply. In the law of demand, the higher a suppliers price, the lower the quantity of demand for that product becomes.  The law itself states, all else being equal, as the price of a product increases, quantity demanded falls; likewise, as the price of a product decreases, quantity demanded increases. This correlates largely to the opportunity cost of buying more expensive items wherein the expectation is that if the buyer must give up consumption of something they value more to buy the more expensive product, they will likely want to buy it less. Similarly, the law of supply correlates to the quantities  that will be sold at certain price points. Essentially the converse of the law of  demand, the supply model demonstrates that the higher the price, the higher the quantity supplied because of an increase in business revenue hinges upon more sales at higher prices.   The relationship between supply in demand relies heavily on maintaining an equilibrium between the two, wherein there is never more or less supply than demand in a marketplace.   Application in Modern Economics To think of it in modern application, take the example of a new DVD being released for $15. Because market analysis has shown that current consumers will not spend over that price for a movie, the company only releases 100 copies because the opportunity cost of production for suppliers is too high for the demand. However, if the demand rises, the price will also increase resulting in higher quantity supply. Conversely, if 100 copies are released and the demand is only 50 DVDs,  the price will fall to attempt to sell the remaining 50 copies that the market no longer demands.   The concepts inherent in the supply and demand model further provide a backbone for modern economics discussions, especially as it applies to capitalist societies. Without a fundamental understanding of this model, it is almost impossible to understand the complex world of economic theory.