Fruits As Battery Essay Example for Free

Fruits As Battery Essay Additional information Batteries are devices that store chemical energy and convert it to electrical energy. Consisting of one or more voltaic cells, batteries come in various sizes and forms and are integrated into most electronic and portable devices. Electrical current is the flow of electrons (movement) of an electrical charge and is measured using an ammeter. Solid conductive metals contain large population of free electrons, which are bound to the metal lattice and move around randomly due to thermal energy. When two terminals of a voltage source (battery) are connected via a metal wire, the free electrons of the conductor drift toward the positive terminal, making them the electrical current carrier within the conductor. Required materials Citrus fruits, such as lemons, limes, grapefruits, or oranges. Copper nail, approximately 2 inches in length Galvanized (zinc) nail, about 2 inches in length Small colored or opaque light bulb with a 2 inch lead, such as a holiday LED light. Note that there needs to be enough wire to connect to the nails. Electrical tape or Crocodile (aka: gator) clip (optional) Micro Ammeter a measuring instrument used to measure the electric current in a circuit, can be found at your local Radio Shack store. (optional) Estimated Experiment Time About 5 to 10 minutes Step-By-Step Procedure 1. Prepare your fruit for the experiment by squeezing it on all sides with your hands. Make sure not to squeeze too tightly and break the skin! The idea is to soften the fruit enough so that the juice inside are flowing. 2. Insert your nails into the fruit, approximately 2 inches apart from one another. The ends (sharp tips) of the nails should be in the center of the fruit, but not touching one another. Be careful not to pierce the nails through the opposite end of the fruit. 3. Remove the insulation around the bulb wires (the leads) so you can expose the wire underneath. You need to remove enough insulation so you can wrap the exposed wire around the nails. 4. Take one of the exposed wires and wrap it around the galvanized (zinc) nail. If the wire keeps slipping off, use some electrical tape or gator clips to keep it attached. 5. Wrap the other end of the wire around the copper nail. 6. When the second wire is attached to the copper nail, your bulb will light up! Note The size of the light bulb will affect how brightly its lit. LED lights require the least amount of energy to light and thus are the best candidates for this experiment. If you have a Micro Ammeter, you can use it to compare the effectiveness of various fruits in relation to electrical current. If using a Micro Ammeter, follow these steps: 1. Connect one of the Micro Ammeters terminals to the copper nail and attach with a Crocodile clip. 2. Connect the other Micro Ammeters terminal to the galvanized plate and attach with a Crocodile clip. Try using different kinds of fruits and measure the differences between them. You may want to consider tomatoes (yes, they ARE fruit) as they have one of the highest pH levels of fruits, making them perfect for this experiment. Observation Do you think another kind of fruit would work with this experiment? How about a vegetable? Which fruit has the best conductivity? Do you think moving the  nails further apart will change the current? Do you think your fruit will continue to power the light bulb after a few hours? How about a few days? Do you think the size of the fruit would effect the voltage? Result The zinc nail is an active metal, which reacts with the acid in the fruit. The active ingredient in the fruit are positively charged ions. A transfer of electrons takes place between the zinc nail and the acid from the fruit. The nails act as poles for the battery, one positive and one negative. Electrons travel from the positive pole to the negative pole via the light bulb wire (the conductor), generating enough electricity to light the bulb.

Graduation Speech -- Graduation Speech, Commencement Address

When they were trying to find someone to give this speech they first asked the most intelligent, smart person they could find. But she turned them down. So then they asked the most beautiful, lovely, attractive person they could find. She also turned them down. Next they asked the nicest, sweetest, kindest, most sincere person they could find. Then I decided it would be rude to turn them down three times in a row, so here I am. How many people here like tomato soup? Come on, raise your hand if you like tomato soup. OK, thank you. That was a really simple question, you either like it or you don't. I wish high school had been that easy. However, as we all know, it wasn't. As the National Honor Society speaker, you probably expect me to speak about something very scholarly, but I'm not....

Actual Outcomes of Paris Peace Conference Essay

Down and out in Paris and London is the work of an elite author by name George Orwell which was published in 1933. It explains in two parts, the subject of poverty about two cities. It gives an account of his survival in Paris and his experience as a casual laborer. In his second part he tells of his life in London. This he uses the viewpoint of a tramp and what accommodation is available. This book so compelling as it is written in a way that it gives a personal touch as Orwell tells of his opinions. George Orwell visualizes how poverty can pull people together as they try to find a solution to their predicaments. He gives a picture of how people in need and of course the peasant’s takes friendship seriously. Coming together is the only way to get a solution for their almost similar issues. George Orwell in his writings addresses the needs of the poor and their issues but he uses his experience to show that poverty is not permanent. Orwell life in the streets taught him that it’s not everybody in the street that is lazy but it’s just that their hard work is hardly rewarded. One can have beautiful plans but he never knows what lies ahead. See more:  Capital budgeting essay His efforts for the first year only brought him twenty pounds and just as he had plans to save and maybe redeem himself an obstacle in form of a thief shattered his dreams. The poor have a way of sticking together and are easily moved by the experiences of the others. Orwell never became a radical but rather he took an outside position, as he probed into the environment of the workers and the poor. He was skeptical of the working class capacity in politics. Though he emphasized of middle class failure to mingle with the working class, he had a kinship attraction to the working class. He was in love with their culture and defended them as decent people defied by economic factors. Orwell is criticized for putting more emphases on confidential social characteristics as preferred to the material discrepancies and conflicts among the labor and the owners of capital. He imagined the common people still lived lives of absolute morals and bad from which intellectuals had escaped long ago. Orwell rejects anti-essentialist pattern. This leads him to a suspicion that the intelligentsia never sought to mingle with the working class but rather to overrun them. Orwell appreciates the low housing values like tactless, stupid, sexist humor, and bawdiness not for what it represents but for what it is. He hails beer and those who take it. He legitimizes the culture of the working class that is the racist and sexist themes. Their loyalty to guns and capital punishment must not be marked as impacts of alienation but can be made regal by the culture. The middle class have had a lot of feedback from Orwell as ties to identify with the working class. The great depression was a serious economic crisis between 1929 and 1933. It led to so many people loosing their jobs and even the farmers were not spared. Businesses went bankrupt and industries were incapacitated. In his book down and out in Paris and London, George Orwell tells of his experience in while living with the unemployed and the miners. However, the most significant thing between the Great depression and George Orwell, is that this is when he was â€Å"born†. Just to give an insight, a child Eric Blair was born to a family of British middle class in 1903 in India. In his child hood, he had experienced the good side of the British empire and had the best education. Blair’s future seemed bright and naturally he was expected to follow in his dad’s footstep. Thus in 1922, he linked up with the imperial police who were stationed in Burma. However, Blair had gotten his suspicion for the ruling class and their unlawful authority as he was undergoing education in Eton. After working for five years, his conscious could not stand the oppression and exploitation in Burma. Thus he returned back to Britain influenced to be anti- imperialist. Upon his return, he was obviously not taking sides with the rule of the day and thus, to avoid bringing shame to his family, he was reborn through a change of name to George Orwell. His rebirth was marked by the documentations he wrote outlining the poor and the working class oppression. Among these documentaries was the book Down and Out in Paris and London 1933. The book Down and out in Paris and London has great connections with the history of Europe. First the writer gives a candid experience of the lives of the working class in London and in Paris. These cities are in Europe and thus a rather raw picture of Europe during the depression which has a great mark in European history is painted. The book literally talks more of the European history but in other words. The casual houses or the spikes are terms synonymous with the European world. It is in this book that George fighting in the Spanish war for the republicans during the Second World War. Some of these experiences are what we learn in the European history but they sound more convincing when they come from a man who really had an upper hand as they happened. In conclusion This book is a perfect picture of the specific historical details about the political and economic circumstances of Europe in the 1920s and early 1930s. Orwell describes poverty as he saw it and experienced it. It is brutal, debilitating, full of suffering and demeaning to the core of one’s being. It was almost impossible for George to publish his book. It is disputed as to whether the original publication really came to see the light of the day. Many publishers could not agree to publish George’s book as the reality covered in it was really a sore to the authorities. The authorities could agree to face the reality that some of its people in the lower levels were being mistreated. They would rather stick to their belief that it was out of their own fault that they had to lead so miserable live. George had a tough time trying to convince that the lower class was decent people facing economic obstacles. The empathy exhibited by George was vey touchy. Some pessimistic argue the fact whether George was merely taking journalistic adventure. However, we get to learn the virtue of empathy in its essence.

Human Activity And The Environment - 877 Words

The Earth is dominated by human activity and the impact so far has been overwhelming. As a species we have changed the environment more than any other species. What drives us to do this can be blamed for success to survive and adapt in most environments. Humanity learns to take control and use the environment to benefit from the resources there. The demand for what we want and what we need to survive is bought by currency and controlled by society and politics. Science wants to create easier ways to change the environment. While religion and culture try to enhance beliefs and values among the world’s people. The Earth’s resource base is what makes life possible upon it. Humans are a part of the ecosystem and need to use the same resources as everything else. The problem is that we take a majority and pollute a fair amount in the process of taking them. The health of the environment can be overlooked when profit is an option. Companies or even individuals can take short cuts in doing a job and pollute the land or water. Economies are important in our lives and it is a main driver in environment change. If it comes to money, the question is any being made and how much does it cost to do whatever? Sometimes a regulation can cost a company more money and will try to change the law to benefit themselves. They greatly influence all the groups that create change and can be positive or negative. Politicians can put into law regulations that help preserve the environment, forShow MoreRelatedHuman Activities And Its Effect On The Environment1363 Words   |  6 PagesAs humans, it is important that we understand what our built environment is. The built environment is human activities and their interactions to the environment that are shaped by our social economic activities. 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