the production of a local cell – small-scale corrosion that happens where two metals of different reactivity are in contact under humid conditions – which speeds up the exothermic reaction. Because the electron potential of magnesium is lower than that of iron (the less reactive metal)‚ electrons will pass from the magnesium to the iron‚ and only from there into the water. Although magnesium cations (Mg2+) and hydroxide anions (OH-) continue to be formed‚ they are separated by the iron and cannot
Premium Magnesium Oxide Calcium
Module 2 Mass Spectroscopy [pic] [pic] Diagram of a mass spectrometer Stage 1: Ionisation The sample is injected as a vapour and the atoms are bombarded by fast moving electrons. This causes the molecule to fragment into two or more pieces. When a molecule or part thereof fragments‚ one portion would be positively charged while the second portion will be uncharged. All uncharged fragments are ultimately lost in the machine as mass spectrometers only work with positive ions. Stage 2: Acceleration
Premium Ion Electric charge Atom
Part III PHYSICS HSE II Time:2Hours Max:60 Scores 1. Three identical charges each +q are placed at the corners of an equilateral triangle of side d cm. Calculate the force on a +ive charge +2q at the centroid of the triangle. 2 2.If the earth is supposed to be a metallic sphere‚its capacity will be nearly (a) 700pf (b) 700 microfarad (c) 700f (d) 6.4 X10^6 f 1score 3. write the relation between dielectric constant and electric susceptibility. 1score 4. A box encloses an electric dipole consisting
Premium Electric charge Fundamental physics concepts Magnetic field
Maxwell (UK) - Electro magnetic theory;Light-an electromagnetic wave 7. Heinrich Rudolf Hertz (Germany) - Generation of electromagnetic waves 8. J.C.Bose (India) - Ultra short radio waves 9. W.K.Roentgen (Germany) - X-rays 10. J.J.Thomson (U.K) - Electron 11. Marie Sklodowska Curie (Poland) - Discovery of radium & Polonium; studies on natural radio activity 12. Albert Einstein (Germany) - Explanation of photoelectric effect; Theory of relativity 13. Victor Francis Hess (Austria) - Cosmic Radiation
Premium Quantum mechanics Electron Light
Chapter II Light and Matter The Inner Workings of the Cosmos 2.4 The Distribution of Radiation All microscopic objects – fires‚ cubes‚ people‚ and stars – emit radiation at all times. They radiate because the microscopic charged particles in them are in constant random motion‚ and whenever charges change their state of motion‚ electromagnetic radiation is emitted. The temperature of an object is a direct measure of the amount of microscopic motion within it. The hotter the object
Free Electromagnetic radiation Light Electron
In the next four paragraphs I will be telling how the story’s helped me to understand the technological science more. The purpose of "Energy Story" is to teach you how all the atoms such as protons‚ neutrons‚ and electrons work when it comes to electricity. We learn all about how electrons have a negative charge and protons have a positive charge‚ and that they have to have an equal amount of negative and positive. The "Energy Story" pretty much teaches us
Premium Baking Cooking Chemistry
Nervous System The nervous system is the part of an animal’s body that coordinates the voluntary and involuntary actions of the animal and transmits signals between different parts of its body. In most types of animals it consists of two main parts‚ the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists mainly of nerves‚ which are long fibers that connect the CNS to every other part of the body. The PNS includes motor
Premium Atom Proton Neutron
found in essentially everything on Earth. K-40 can undergo beta decay and can transform to two different atoms: Calcium-40 and Argon-40. Approximately 10.72% of beta decay is K-40 transforming to Ar-40 via electron capture. Electron capture occurs when a proton-saturated atom absorbs an electron from the inner shell and thus transforming a positively charged particle (proton) into a neutral particle (neutron). Since lava is liquid‚ any argon-40 gas previously trapped in lava will be able to escape
Premium Radioactive decay Earth Electron
Modern theories For a long time‚ it was thought that the proton‚ neutron‚ and electron were the elementary particles‚ as well as the smallest. Since the Atomic Theory was formulated‚ many new particles have been discovered. The new theories concerning these particles and predicted particles attempts to explain every phenomena in physics. This is also called the Universal Theory of Matter. Dark Matter and Dark Energy Dark matter is an assumed kind of matter which unlike ordinary matter does
Premium Elementary particle Particle physics Matter
Imler‚ & Michael Montone CHEM 353 Abstract: Introduction: Method I: Absorption Spectra of Conjugated Dyes This method analyzes a series of dyes with alternating double bonds. It is assumed that the π electrons are free to move and ignoring the electro static repulsion among the π electrons themselves. The theoretical model applied in this experiment is the particle in the box. The model states that a single particle moves free along a line but will remained constrained to its limits.
Premium Photon Electromagnetic radiation Electron