Gamma ray spectroscopy using a scintillator detector
Essay - 8 pages - Physics
The aim of the experiment is to learn about the basic techniques of gamma ray energy spectroscopy and the interpretation of a spectrum, using a NaI(TI) detector. We obtained the spectra of two gamma sources using a spectrometer and the Maestro program. We also computed the energy resolution of...
How Mad is Reefer?
Essay - 4 pages - Physics
From the age of twelve and older nearly 40% of our country, about 98 million Americans, has used Cannabis sativa for its psychological and physiological effects in much the same way as it has been throughout recorded history (AMA Council). This lengthy past has constructed a harsh stigma around...
Gas Chromatography
Case study - 4 pages - Physics
Chromatography is a technique used to separate and analyze chemicals. It was initially discovered in the early 1900's by chemist Mikhail Tsvett who was researching chlorophyll to separate plant pigments.1 The components undergoing separation are divided into two phases, a stationary phase, and a...
Generating Electricity
Presentation - 10 pages - Physics
The blade of a turbine is tilted an angle. Movement of the air is channeled creating low and high pressures on the blade that force it to move. The blade is connected to a shaft which in turn is connected to an electrical generator. The mechanical energy of the turning blades is changed into...
Development in LSD Synthesis
Essay - 3 pages - Physics
LSD, the common abbreviation for Lysergic Acid Diethylamide-25, often termed “acid” in the streets, is one of the most potent hallucinogenic substances known to man. The chemical was actually synthesized for the first time in 1938 by a German scientist named Albert Hoffman. However, in...
Ka and Buffer Titrations
Case study - 2 pages - Physics
As living things, we are highly sensitive to changes in our environment; this doesn't only mean changes outside our body, but changes from within also. For the cells in our bodies to function properly a certain temperature and pH has to be maintained. Even a slight change in pH inside our bodies...
Experiment: Mole Ratios, Limiting and Excess Reactants and Precent Yield
Case study - 4 pages - Physics
The purpose of this lab is as follows: To use mole ratios to predict the amount of precipitate formed, to use mole ratios to study the effect of reactant molarity on the yield of product, to use mole ratios to study limiting and excess reactants, and to design an experiment which achieves the...
Chemical Changes
Case study - 6 pages - Physics
The purpose of this lab was to find out the indications of chemical changes and reactions when mixing two different substances, which are listed specifically in the Observations section. The purpose is also to find out how a percent by mass solution is made up. The data and observations that is...
Harmfulness of mobile phones
Essay - 7 pages - Physics
If I ask you what is the thing that you always have with you? You will probably answer: "my watch", "my purse" or "my diary"…but I am sure a lot of you will answer "my mobile phone"!! and it is normal, in fact, if you think well, this little device can replace all the things quoted before:...
The basic principle of a rocket
Worksheets - 4 pages - Physics
At first sight, a rocket seems to be about fire, noise and smoke. The basic principle of rocket is the famous Newtonian principle which says that "To every action, there is an equal and opposite action". A rocket throws mass in one direction and benefit of an equal reaction in the opposite...
Ferromagnetism and the Curie-Weiss Law
Course material - 3 pages - Physics
In "Ferromagnetism and the Curie-Weiss Law" the author will start by giving a more complete derivation of the Curie-Weiss law, which might make a few points clearer. Then he will try to address some of your questions more directly. The author hopes that the derivation itself will make things...
Position of the Fermi Level for Extrinsic Semiconductors: Additional Notes for Solid State Physics
Course material - 2 pages - Physics
In "Position of the Fermi Level for Extrinsic Semiconductors" the author will talk a little more in detail about doped semiconductors. Here, the author answers the following questions: (i) What is the position of the Fermi level for an extrinsic semiconductor? (ii) What is the concentration of...
Quantum Dots : A Brief Overview
Essay - 5 pages - Physics
Over the past few decades there has been immense interest in Quantum Dots. In this report the author will outline some of the fabrication techniques, basic theory, and a few important properties of QDs. There are various different kinds of Quantum Dots. The author will focus mainly on...
Computer simulation study of ionic and non ionic hydration
Essay - 10 pages - Physics
Liquids, solution, and liquid crystals present local, but not long-range order. On one hand particles in liquids interacts much strongly than the particles in gas, and this prevents the use of the usual statistical mechanics methods to predict their structure and properties since the needed...
Designing a centrifugal pump for agricultural purposes
Dissertation - 17 pages - Physics
The purpose of this project was to calculate the dimensions of a centrifugal pump, for a determined application, to write a report and then to make an oral presentation, in English, to an auditorium. Therefore, this is a complete project from the choice of the specifications with documented...
Motor Speed Control
Essay - 7 pages - Physics
The aim of this report is to examine the main properties of a DC motor, its main applications and the characteristics of certain circuits that are used to control it. The report also seeks to give a general background on the equipment, including a slightly more in depth explanation of the DC...
