6. “A new etchant for the chemical machining of St304”, A. Fadaei Tehrani, E. Imanian, Journal of Materials Processing Technology 149, 404–408, 2004. 7. “Increasing utilization efficiency of ferric chloride etchant in industrial photochemical machining” David M. Allen, Heather J.A. Almond, J. Environ.
In this lab, an experiment was conducted to verify the relationship between an electrical field and the equipotential map. Electrical fields are mapped out using equipotential lines. Electrical fields are defined as a force per unit charge. In our daily life, we are surrounded by electric fields. For these small fields that we cannot sense, we use a tool called voltmeter to measure different aspects of electricity.
The purpose of this experiment was to use charged electrodes on conducting paper and voltmeter to discover electric field. The experiment also discovered the relationship between equipotential lines and electric field lines. The purpose of the experiment was to find if the theory that equipotential lines always run perpendicular to electric field lines hold true. The equation used in this experiment is E = ∆V/∆d. The experimental value yielded a result of y = -100x + 10 and the theoretical yielded a -100 V/m.
Tulia Peres “Solar Panels” Informative Speech Outline Introduction A. Attention Getter: Does anyone know what electric energy source works during the day and night? B. Background and Audience Relevance: As stated by C. Naff in his 2007 book Feeling the Future Solar power the development of the Solar Panels began during the mid-1800, this was during the Industrial Revolution to be able to heat up water and also steam for the machinery. In the year of 1839 French Scientist Alexandre Edmund Becquerel discovered the Photovoltaic process.
Describe and calculate Project A’s expected net present value (ENPV) and standard deviation (SD), assuming the discount rate (or risk-free interest rate) to be 8%. What is the decision rule in terms of ENPV? What will be San Diego LLC’s decision regarding this project? Describe your answer. Probability Cash flow Probability X Cash flow Variance = Probability 0.3 $70,000,000 $21,000,000 43,200,000,000,000 0.4 $60,000,000 $24,000,000 1,440,000,000,000,000 0.1 $50,000,000 $5,000,000 250,000,000,000,000 0.2 $40,000,000 $8,000,000 320,000,000,000,000 Total cash flow Yr 3 $58,000,000 2,053,200,000,000,000 This was done by standard deviation: √ Variance Year 1 = √ 919,200,000,000,000 = 30,318,311.30 Year 2 = √ 1,380,000,000,000,000 = 37,148,351.25 Year 3 = √ 2,053,200,000,000,000 =
V=IR seems a pretty simple law to name after someone, but the importance of Ohm 's work does not lie in this simple proportionality. What Ohm did was develop the idea of voltage as the driver of electric current. Ohm had to face a lot of opposition. This discovery was not accepted until 1841 (“A Timeline Of History Of Electricity,” n.d.). 1831- Using his invention the induction ring, Michael Faraday proved that electricity can be induced (made) by changes in an electromagnetic field.
Photovoltaic cells, like batteries, generate direct current (DC) which is generally used for small loads (electronic equipment). When DC from photovoltaic cells is used for commercial or sold to electric utilities using the electric grid applications, which must be converted into alternating current (AC) power converters using semiconductor devices that convert DC into the mains. PVS historically they have been used to provide electricity in remote locations. However, a market for distributed PV generation can grow with the unbundling of transmission and distribution costs due to electricity deregulation. The implementation of numerous small-scale generators in electricity distribution feeders could improve the economy and reliability of the distribution
The total thiol content was calculated by using ε=13.6x10 cm-1 M-1 Sedlak & Lindsy, 1978). 2.11. Statistical analysis Data were analyzed using StatSoft STATISTICA version 12 software. Differences between the groups were assessed by a nonparametric Mann–Whitney and Kruskal–Wallis tests. Values in the text are means±standard deviation (SD).