Saturday, February 15, 2020

Economic Essay Example | Topics and Well Written Essays - 1500 words - 14

Economic - Essay Example In times preceding the period of Renaissance, regions in the European continent were divided in forms of principalities. The Pope of the church was considered to be the representative of God and King of a principality was considered to be the representative of Pope. Common men in the principalities did not have the freedom to undertake decisions regarding any facets of livelihood. After this era of brutality and cruelty on mankind, Europe faced the age of â€Å"rebirth† or Renaissance. Following that, Europe experienced a socialistic economic system for a long period of time. However, from the theory of Karl Marx, it can be stated that towards end of the 18th century, economy of Western Europe had experienced a capitalistic form of market system. The capitalist class in the economy were the merchants, who owned land as well as newly invented and superior state of technology (Hoffman, 2000). The labour resource, at that point of time, was almost utilized a non-living materialis tic resource. The population of the nations of Western Europe were significantly increasing. The economies were subjected to product and food crisis. Land owning farmers started to sell off their lands for establishing new factories. Crisis and scarcity forced economies to become more productive in nature. So, in order to become more productive, economies undertook the process of industrialization in Western Europe in early 19th century. Colonial rule became a common method of territory expansion for these Western European nations as economies required adequate raw agricultural inputs from its conquered colonies, for sustaining the demand for its new industrial sector. Industrialization had initially taken place in the economy of Japan in Asia, in the second-half of 19th century. However, in the latter half of 20th century, industrialization was experienced in other major economies of the Asian Continent, like, Singapore, South Korea, Taiwan

Sunday, February 2, 2020

The Impact of Light Wavelength to Photosynthesis Lab Report

The Impact of Light Wavelength to Photosynthesis - Lab Report Example Nonetheless, our data did not support the hypothesis since the red light did not have significantly higher rate of photosynthesis among the three colors. Light is very significant to plants as it is the energy source that aids a chain of chemical reactions involve in the process of their food production called photosynthesis. With their light trapping photosynthetic pigments, plants collect light energy that then supports the production of sugar. The most important among several different pigments is chlorophyll which is responsible for green color of most plants (Light wavelength and photosynthesis) process we know as photosynthesis (Farabee, 2008). Sunlight as the primary source of light is converted to a usable chemical energy with the actions of green pigment chlorophyll. This process leads to the chemical reaction wherein water and carbon dioxide enter the cell of the leaf producing oxygen and sugar. With that leaves serves as solar collector full of photosynthetic cells (Whitmarsh). Light is a matter and an electromagnetic radiation which is a form of energy. The light that allows us to see is actually a combination of different wavelength and termed visible light. To separate these wavelengths the light must pass a prism making them all visible (Light wavelength and photosynthesis). ... This creates an electromagnetic spectrum of light between red as the longest wavelength while violet as the shortest (Farabee, 2008)The light energy that is transmitted and reflected is represented with the colors that we see while those that we cannot are those that are absorbed (Light wavelength and photosynthesis) Light is absorbed through substance called pigments. For most plants chlorophyll is the green pigment responsible for absorbing all wavelengths of visible light except green. As the pigment absorbs light energy, it triggers photosynthesis; thus making the effectiveness of different wavelengths of light generating electrons relative to the action spectrum of such chemical reaction. Methods The impact of light wavelengths on photosynthesis was determined by exposing the plant Dracaena to light of different wavelengths then measuring the decrease in carbon dioxide level. With a 60 Watts soft white light bulb with red, green and yellow light filters, wavelengths of 630 to 750nm representing red, 570 to 590 representing yellow, and 490 to 560nm representing green were utilized. Two treatments were done for each of the three wavelengths, each treatment with seven replicates. Each of the seven plants was placed in the CID machine and tested for CO2 level respiration. Each plant was initially tested for drop in CO2 after two minutes of light exposure and then final measurements were obtained within seven minutes. Thus had provides us the amount of change in the level of carbon dioxide utilization within five minutes interval. Results The data in Figure 1 shows that the change in level of carbon dioxide utilization differs among colors of different wavelengths. The control where in the sunlight serves as the source of light displays a mean of 160.71