CHEM7113 - Atomic Spectroscopy ! !! Analytical Techniques "! Absorption (AAS) "! Flame AAS "! Vapour generation AAS furnace (electrothermal) AAS "! Graphite "! Emission (AES) "! ICP-AES "! AFS (atomic fluorescence) Some diagrams and Tables are reproduced from Skoog ‘Principles of Instrumental Analysis’‚ 5th/6th ed. 1 ! Atomic Spectroscopy ! !! Electronic transitions : UV - visible radiation excitation of outer-shell electrons of atoms in the gas phase energy
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PHOTOGRAPHY The word photography derives from the Greek phōtos means "light" and graphos means "drawing"‚ together meaning "drawing with light". Photography is the art‚ science‚ and practice of creating durable images by recording light or other electromagnetic radiation‚ either chemically by means of a light-sensitive material or electronically by means of an image sensor. Photography has many uses for business‚ science‚ manufacturing‚ art‚ recreational purposes‚ and mass communication. Modern
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Cami Petrides Mrs. Babich Algebra Period 4 April 1‚ 2014 Extra Credit Project 12. When you flip a light switch‚ the light seems to come on almost immediately‚ giving the impression that the electrons in the wiring move very rapidly. Part A: In reality‚ the individual electrons in a wire move very slowly through wires. A typical speed for an electron in a battery circuit is 5.0x10 to the -4th meters per second. How long does it take an electron moving at that speed to travel a wire 1.0
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Dream Job Hello my name is‚ today i will be talking about my dream job or my future job if i could say. my dream job is to be an physicist‚ an physicist is an expert in physics‚ and sometimes even dealing with living organisms. But there are many different types of physicist out there. there are Particle Physics‚ Astrophysics‚ Theoretical Physics‚ Mechanical Physics‚ Quantum Physics well known as (Quantum Mechanics) lastly there is Biophysics. But the type of physicist i want to be is to be an
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Stephen Hawking is a British theoretical physicist‚ he was born on January the 8th‚ 1942. Hawking has worked extensively on the subject of black holes‚ providing theories for their behavior‚ including the idea that they gave out radiation. Hawking suffers from amyotrophic lateral sclerosis‚ a type of motor neuron disease that has left him almost completely paralyzed. Hawking has made many important contributions to the fields of cosmology and the laws of gravity. He is also well known for his bestselling
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Which way are we headed…Life is just a dream With the progress of technology humanity is headed towards two different directions. On one hand there is absolute annihilation. We all realize there exist WMD’s that can wipe the entire human race many times over. On the other hand immortality seems to be just round the corner. It might not be possible to immortalize human body per se. Creating a media to take a back up of human soul is surely not a distant dream. Human consciousness is undoubtedly
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Stephen Hawking WAS an atheist who is now a theist. A large part of that conversion was disdain for the arrogance displayed by many atheists. They scoff at the idea of God because there is no evidence for Him. However‚ as Hawking pointed out‚ if all scientists thought that way‚ black holes would never have been discovered. There was no evidence for them. The Heisenberg uncertainty principle points to a mystical side of quantum physics that stretches credulity and suggests "mind" as a component
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A Bias for Action Heike Bruch Sumantra Ghoshal Harvard Business School Press‚ 2004 Often managers spot a chance to do something valuable for their company‚ but for some reason‚ they cannot get started. Even if they begin the project‚ they give up when they see the first big hurdle. The inability to take purposeful action seems to be pervasive across companies. Managers tend to ignore or postpone dealing with crucial issues which require reflection‚ systematic planning‚ creative thinking‚ and above
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Electromagnetic energy‚ in the form of light‚ travels in wavelengths and is measured in nanometres (nm). Pigments within matter‚ such as plants‚ absorb varying wavelengths of light. The absorption spectrum can be defined as a graphical representation of a pigment’s ability to absorb light against varying wavelengths (nm). The pigments light absorbing ability is measured using a spectrophotometer. An action spectrum can be defined as the graphical representation of the rate of photosynthesis against
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Flame Tests 12.01.2010 19.01.2010 Introduction The normal electron configuration of atoms or ions of an element is known as the “ground state”. In this most stable energy state‚ all electrons are in the lowest energy levels available. When atoms or ions in the ground state are heated to high temperatures‚ some electrons may absorb enough energy to allow them to “jump” to higher energy levels. The element is then said to be in the “excited state”. This excited configuration is unstable‚
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