The Physics of a Quality Espresso Essay -- Process Physics Essays

The Physics of a Quality Espresso There are many ways to get a good cup of coffee—through perculators, gravity systems, and steeping fresh gounds. However, espresso, which is usually considered a finer beverage, is made by taking about two ounces of espresso grind (ground arabica beans) packed tightly into the head of an espresso machine, and submitting it to high pressured hot water. An espresso machine is designed to force a small amout of water through tightly packed, finely ground coffee. The idea is to pull the best flavored and most consistent espresso from the espresso blend. In order to achieve quality espresso certain physical processes have to take place—namely the passage of pressurized water through the espresso grind, heat transfer, and correct packing of espresso into the head of an espresso machine. Acording to Gourmet Retailer, a monthly publication devoted to gourmet foods and services, the right amount of pressure is required to make a quality espresso: â€Å"To create the perfect crema [espresso], the actual pressure should be between nine and eleven atm (or bar) when the hot water passes through the coffee† (52). Now, the actual pressure capacity of an espresso machine is usually out of the users control, but an explination of the physical concepts may be the first step in defining a quality espresso. In Physics a World View, Larry D. Kirkpatrick and Gereld F. Wheeler write: â€Å"Pressure is the force exerted on a surface divided by the area of the surface—that is, the force per unit area† (171). P = F / A This defeniton applies to gases, liquids, and solids. In the case of pressurized water in an espresso machine, for instance, if the water had thirty newtons of force and the espresso grind had... ...e and bitterness is pulled from the espresso. As I have shown, there are three major physical concepts surrounding a quality espresso. When the espresso machine has the correct pressure quantity (between nine and eleven bar), and the water is hot enough, you can get a quality espresso. But remember, if the barista running the machine has no concept of this, or really hasn’t had a lot of experience making gourmet coffee, then the espresso may not turn out as you like. A good espresso pack in the head of the machine is required for an excellent espresso. Works Cited â€Å"Coffee Centers & Espresso Machines.† Gourmet Retailer Feb. 2003: 52. Schomer, David C. Espresso Coffee: Professional Techniques. New York: Peanut Butter Publishing, 1996. 37. Kirkpatrick, Larry D. and Gerald F. Wheeler. Physics a World View. Orlando: Harcourt College Publishers, 2001. 171. The Physics of a Quality Espresso Essay -- Process Physics Essays The Physics of a Quality Espresso There are many ways to get a good cup of coffee—through perculators, gravity systems, and steeping fresh gounds. However, espresso, which is usually considered a finer beverage, is made by taking about two ounces of espresso grind (ground arabica beans) packed tightly into the head of an espresso machine, and submitting it to high pressured hot water. An espresso machine is designed to force a small amout of water through tightly packed, finely ground coffee. The idea is to pull the best flavored and most consistent espresso from the espresso blend. In order to achieve quality espresso certain physical processes have to take place—namely the passage of pressurized water through the espresso grind, heat transfer, and correct packing of espresso into the head of an espresso machine. Acording to Gourmet Retailer, a monthly publication devoted to gourmet foods and services, the right amount of pressure is required to make a quality espresso: â€Å"To create the perfect crema [espresso], the actual pressure should be between nine and eleven atm (or bar) when the hot water passes through the coffee† (52). Now, the actual pressure capacity of an espresso machine is usually out of the users control, but an explination of the physical concepts may be the first step in defining a quality espresso. In Physics a World View, Larry D. Kirkpatrick and Gereld F. Wheeler write: â€Å"Pressure is the force exerted on a surface divided by the area of the surface—that is, the force per unit area† (171). P = F / A This defeniton applies to gases, liquids, and solids. In the case of pressurized water in an espresso machine, for instance, if the water had thirty newtons of force and the espresso grind had... ...e and bitterness is pulled from the espresso. As I have shown, there are three major physical concepts surrounding a quality espresso. When the espresso machine has the correct pressure quantity (between nine and eleven bar), and the water is hot enough, you can get a quality espresso. But remember, if the barista running the machine has no concept of this, or really hasn’t had a lot of experience making gourmet coffee, then the espresso may not turn out as you like. A good espresso pack in the head of the machine is required for an excellent espresso. Works Cited â€Å"Coffee Centers & Espresso Machines.† Gourmet Retailer Feb. 2003: 52. Schomer, David C. Espresso Coffee: Professional Techniques. New York: Peanut Butter Publishing, 1996. 37. Kirkpatrick, Larry D. and Gerald F. Wheeler. Physics a World View. Orlando: Harcourt College Publishers, 2001. 171.

Poverty In America Essay

Poverty has been on the rise in America, mainly because of the recession and now it is reaching new heights. Even though the government is trying to make more beneficial tax cuts, and find other various solutions, poverty levels continue to rise drastically. But to first find the solution ourselves we must first know what causes poverty and what it is. A simple definition of it is, poverty is the state of one who lacks a certain amount of material possessions or finances. Absolute poverty refers to the deprivation of basic human needs, which commonly includes food, water, sanitation, clothing, shelter, health care and education. People living in poverty have a much lower standard of living than those who are better off financially. Most people suffering from this deprivation have lost their homes and have difficulty finding things to eat and clothes to dress themselves with. People with money in this country do not have to worry about simple things such as where they will take a shower in the morning or how to ration the small amount of food they have to feed their whole family the day at hand. People with a substantial amount of money do not have to apply for government assistance such as food stamps or unemployment benefits. These also have things like insurance and healthcare to help them along as problems arise in life. People living in poverty do not get that luxury in insurance which gives them a sense of depreciated of self-worth. Because of this, it may be difficult to present themselves in a professional manner when searching for employment. America considers people who make less than 10,500 dollars a year, are a large part of why we have arrived at this dilemma due to the recent recession that has occurred. A lot of people go to desperate measures to provide food and other basic need for their families. For example many women become victims of trafficking, the most common form of which is prostitution as a means of survival for this economic desperation. Terrible living conditions can often compel children to abandon school in order to contribute to the family income, putting them at risk of being exploited too. This also causes many people that have lost their jobs and are making a fraction of what they are used to making for the job duties they are doing. People now work late past the time they are required to finish their daily task plus other extra work load because their coworker got let go due to the fact that their employer can not afford to pay both of their salaries. These same people now rely on unemployment checks and other government assistance programs to support their families and basic needs. It is estimated that one out of every seven houses have been taken by the banks in the last ten years alone. Because of this, America is seeing an all new kind of poverty. The middle class is slipping from steady ground and down to the bottom. People that used to make a decent living can no longer compete with this new economy. Poverty in today’s society has become a major issue and it affects more people than we think. People are losing jobs and cannot help it. In this economy we live in today it is very hard to make money and provide for our families. These people cannot get all of the help they need because some people are just working the system, so they either get rejected or reject the fact they need because they do not want to categorized with those people. An example, from where I’m from I use to be a cashier at Kroger for two years and so many people on food stamps and the WIC program (Women Infants Children) would come in to buy food and have iPhones and Coach Purses or even keys for Mercedes and if you have any of those thing you do not have your properties in order. This is just not fair for those people that are in dire need for food and using these programs the way they are supposed to be used for. And that is why it’s hard for normal people who work so hard for their money and still do not make enough to provide and the need for a helping hand in food programs such as these. With all this being said, people need to look into the Baptist Faith it is taught that all Christians will go through times of suffering and one of these suffering phases we go through is poverty. Many people now a days seem to be faithful to the church until they become unemployed or fall on hard times financially, and instead of looking to God they tend to blame him. God does not make bad things happen, it is not his plans to harm us but protect from the evil that is causing the suffering. I agree with the Baptist Faith on their view towards poverty. Furthermore, I believe if more people just trusted in God more faithfully and I know it is easier said than done but it would help many peoples walk with the Lord on the right path and further it.

The Function Of The Hair Follicle Stem Cells - 1239 Words

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