Liannys Polanco 02.05 Electron Arrangement and EMR: Line Spectra Lab Worksheet Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure Access the virtual lab and complete the experiments. Part One (Flame Test): Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame Identify each unknown from Part One of the
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with matter. • Wave model failed to account for absorption and emission of EM energy – (sinosoidal wave model (λ ‚ f‚ v‚ Amplitude) • Particle model : EM radiation is viewed as stream of discrete particles or wave packets‚ of energy called Photons where energy is proportional to frequency ( ) E~ f Electromagnetic Radiation • Electric field- responsible for most phenomena (transmission reflection‚ refraction and absorption) • Magnetic field responsible for absorption of RF waves
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Questions and Pre-Lab Questions Pre-Lab Questions: 1.When an atom absorbs energy‚ the electrons move from their normal state to an excited state. When an atom emits energy‚ the electrons move from an excited state to their ground state and give off photons. 2.Is the flame test a qunatitative test or qualitative test for the identity of an unknown? This flame test is both quantitative and qualitative. It is quantitative because we are measuring the wavelength‚ and it is qualitative because we
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------------------------------------------------- Types of chromophore Conjugated chromophore that straightens in response to a photon γ (light)‚ of the correct wavelength: 11-cis-retinal becomes all-trans-retinal Chromophores almost always arise in one of two forms: conjugated pi systems (also known as resonating systems) and metal complexes. [edit]Conjugated pi-bond system chromophores In the conjugated chromophores‚ the electrons jump between energy levels that are extended pi orbitals
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scientists looked at the world and set a foundation for modern inventions. For E=mc2‚ it one of the equations the helped the Theory of Relativity. For the foundation for modern physics‚ it helped lead onto other modern physics discoveries such as Photons‚ Bose-Einstein Condensate‚ and the Atomic Bomb. Life without this knowledge is like a life without living. As you can see‚ without Einstein’s discoveries‚ loads of other pieces of modern physics would not have been found. And finally‚ how did he
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book. ii Table of Contents 1 Confined Light Has Inertia 1-1 • Light in a Reflecting Box • Confined Black Body Radiation • de Broglie Waves • 8 Particle‐like Properties of a Confined Photon 2 Definitions and Concepts from General Relativity 2-1 • Schwarzschild Solution • Definition of Gravitational Gamma Г • Schwarzschild Coordinate System • Coordinate Speed of Light • Shapiro Experiment • Gravity Increases
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radiation‚ such as visible light‚ that is above the threshold frequency. This is because electrons cannot get enough energy to overcome their atomic bonding. The photoelectric effect furthered wave particle duality‚ whereby physical systems (i.e.: photons in this case) can display both wave - like and particle like properties and behaviours‚ a concept used by the creators of quantum mechanics. It was explained mathematically by Einstein‚ utilising work in quantum mechanics‚ and was developed by people
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the same source is placed 0.6 m away from the photoelectric cell‚ then find (a) the stopping potential (b) the saturation current 2. 663 mW of light from a 540 nm source is incident on the surface of a metal. If only 1 of each 5 × 109 incident photons is absorbed and causes an electron to be ejected from the surface‚ the total photocurrent in the circuit is ________. 3. Light of wavelength 330 nm falling on a piece of metal ejects electrons with sufficient energy which requires voltage V0 to
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atoms of a metal into a flame‚ electrons can be induced to absorb energy and jump to an excited energy state‚ this is called a quantum jump. They then return to their ground state by emitting a photon of light. The amount of energy in the photon of light determines its color. For example‚ when a photon gives off red light‚ you can determine that it does not have a lot of energy because red light is the lowest of visible light on the electromagnetic spectrum. Opposite to that‚ violet light would
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Green Computing: Should It Be Photonics or Spintronics for Quantum Computers? Xavier Mattam xaviermattam@hotmail.com Abstract - Quantum Computers are widely acclaimed as the future computers. There is so much research being done in this field of Quantum Computers that one would rightly feel that the advent of Quantum Computers for everyday use is not far off. But at a time when Global Warming has become a real threat to our very existence‚ the question we need to responsibly ask ourselves before
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