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Johannes Van Der Waals
1,302 wordsJohannes Diderik van der Waals was born on November 23, 1837 in Leyden, located in The Netherlands. His parents were Jacobus van der Waals, a carpenter and Elisabeth van den Burg. Without having much money to start with, van der Waals had to work his way up the latter. After completing his elementary education in Leyden, he became a schoolteacher. Having no prior knowledge of classical languages, and being exempt from taking academic examinations, he continued studying at Leyden University in hi...
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Johannes Van Der Waals
1,122 words... slightly negative and the other end of it is slightly positive. The Dispersion forces exist between non-polar molecules. Dispersion forces are another of van der Waals' three forces. They exist between non-polar molecules. It is important to remember that within a bond, electrons are constantly MOVING. They zoom around the atoms really quickly. As a result, there may be a tiny instant in that time span where the electrons happen to dominant on one side, rather than the other. However, this t...
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2 H 2 O Creatine Phosphate
1,714 wordsWith the aid of diagrams provide a summary of how the following energy systems work. Energy systems; introduction Energy systems are cellular levels processes used to produce Adenosine Triphosphate (ATP) figure 1. This is an adenosine molecule linked to three high-energy phosphates that acts as an energy store for the cell. The energy is released when ATPase, an enzyme, reacts with ATP to produce ADP and Pi, e. g. ATP ADP + Pi There are three energy systems that do this; The Creatine Phosphate S...
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Isaac Newton Positively Charged
1,757 wordsI read this book called, "The Cartoon Guide to Physics. " In this book the author explains how the law of physics work and the cartoonist gives a visual explanation which helped me understand how the equation works, since I'm a visual person. This paper is about a book titled "The Cartoon Guide to Physics. " This book explains complicated physics equations using cartoons. This approach helped me a great deal because I understand things better if I can picture them in my mind. This book was very ...
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Lead Acid Battery Potassium Hydroxide
787 wordsThere are many kinds of batteries which consist of different materials in order to produce an electric charge. Here are some of the most common batteries, what they consist of and how they work. Bichromate Cell (see picture # 1) A battery is a device which converts chemical energy into electrical energy. A battery usually consists of two or more cells connected in series or parallel, you can also have a single cell battery. All cells consist of a positive electrode, and a negative electrode. An ...
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Valence Electrons Periodic Table
854 wordsThe periodic table is simply the organization and classification of different elements. By the end of the 1700 s, scientists had identified about 30 elements. In less than 100 years, the number of known element doubled because of new means of recognizing them. In the early 1800 s, Dobereiner observed that there were elements that could be classified into groups of 3, or triads. These triads were significant because these classifications of similar elements represented the very beginning of the p...
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Stimulated Emission Positively Charged
948 wordsLasers HISTORY OF LASER PRODUCTION The roots of laser mechanism are very modern. In 1900 German physicist Max Planck presented an explanation of why the colors of a glowing hot body may change with temperature. He also proposed discrete quantum theory saying that radiations come in discrete quantities called quanta. Therefore radiations are not only a series of waves but a stream of particles called photons. By 1917, Einstein has outlined the principles underlying the production of laser radiati...
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Big Bang Theory Miles Per Second
2,170 wordsBig Bang Cosmology Introduction to Big Bang Theory Einstein came up with The Big Bang Theory with the intention of creating a model of the universe in which both his General Theory of relativity worked and the rest of the universe still worked. He based his theory on a fairly uniform distribution of mass throughout the universe. His Big Bang Theory was able to fix the peculiar way that Mercury Orbited the Sun and it was able to fix the way the Sun bent light. These were the first problems that i...
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Nitric Acid Scientific American
825 wordsChemistry Connections of nitrogen - saltpeter, nitric acid, ammonia - were known long before invention of nitrogen in a free condition. In 1772 D. Rutherford, burning phosphorus and other substances in a glass bell, has shown that the gas remaining after combustion does not support breath and burning. He named it suffocating air. In 1787 A. Lavoisier has established, that the "vital" and "suffocating" gases included in air, are simple substances, and has offered the name "nitrogen." In 1784 G. C...
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Electron To Form Covalent Bond Bonds
446 wordsChemical bonds are what make up the world. In bonds, elements are held together and form compounds that may have new physical and chemical properties. There are two main kinds of bonds, they ionic and covalent. In bonding the goal of the atoms involved is to reach a level of stability with less energy. In order to reach the epitome of stability, as in the case of noble gases, an atom strives to complete its outer shell. Either losing or gaining electrons may do this, which concludes in an ionic ...
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University Of Cambridge Nobel Prize
1,240 wordsT 3 IBS Chemistry Historical Development of Atomic Structure The idea behind the atom goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning not divisible. Then came the chemists and physicists of the 16 th and 17 th centuries who discovered various formulae of various salts and water, hence discovering the idea of a molecule. Then, in 1766 was born a man named J...
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Electric Light Bulb World War Ii
4,554 wordsThe Development of the Television Television, our link to the changing world around us. Once thought to be just a passing phase through a quickly advancing society, but now a common innovation in every household. Since the l 940 s television has become the window on the world for much of industrialized society. Anything the eye can see may be brought to the little screens in living rooms, bedrooms, and kitchens. What comes through the window, however, does not always please everyone. Television ...
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Orbital Magnetic Dipole Orbital Magnetic Dipole Moment Electron
519 wordsThe Discovery Of The Electron The electron was discovered in 1895 by J. J. Thomson in the form of cathode rays, and was the first elementary particle to be identified. The electron is the lightest known particle which possesses an electric charge. Its rest mass is Me equal> 9. 1 x 10 - 28 g, about 1 / 1836 of the mass of the proton or neutron. The charge of the electron is -e = - 4. 8 x 10 ^- 10 esu tro static unit). The sign of the electrons charge is negative by convention, and that of the equ...
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Endoplasmic Reticulum Electron Microscope
1,979 wordsExplain With Aid Of A Diagram The Explain With Aid Of A Diagram The Working Of The Electron Microscope The diagram below shows a picture of an electron microscope. This is a type of microscope that makes use of a beam of electrons rather than visible light. Because the wavelength of electrons is much smaller than the wavelength of visible light, an electron microscope not only gives a high magnification but it also has high resolution. This means that details can be seen clearly. An electron mic...
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Directly Proportional V V
1,170 wordsIf Varying Currents Affects The Loss In If Varying Currents Affects The Loss In Mass At The Electrodes To find out how varying the current affects the loss in mass of the anode and the gain in mass in the cathode Introduction - Purifying Metals It has been found that when a copper solution is electrolyzed using copper electrodes, the anode looses mass and the cathode gains mass. This is an investigation into how varying the current affects the change in mass of the electrodes during electrolysis...
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H 2 O Mass Spectrometer
531 wordsAMass Spectrometer Mass Spectrometer A mass spectrometer produces charged particles (ions) from the chemical substances that are to be analyzed. The mass spectrometer then uses electric and magnetic fields to measure the mass (weight) of the charged particles. There are many different kinds of mass spectrometers, but all use magnetic and / or electric fields to exert forces on the charged particles produced from the chemicals to be analyzed. A basic mass spectrometer consists of three parts: 1. ...
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Electromagnetic Radiation Einsteins Theory
365 wordsPhotoelectric Photoelectric Effect Photoelectric Effect Photoelectric Effect is the formation and liberation of electrically charged particles in matter, usually metals, when it is irradiated by light or other electromagnetic radiation. The term photoelectric effect designates several types of interactions. In the external photoelectric effect, electrons are liberated from the surface of a metallic conductor by absorbing energy from light shining on the metals surface. This is the form that we g...
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World Report Volume U S News 038 World
1,236 wordsA Quantum Computer a future technology By the strange laws of quantum mechanics, Folger, a senior editor at Discover, notes, an electron, proton, or other subatomic particle is in more than one place at a time, because individual particles behave like waves, these different places are different states that an atom can exist in simultaneously. Ten years ago, Folger writes, David Deutsch, a physicist at Oxford University, argued that it may be possible to build an extremely powerful computer based...
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Plate Current Flows Electron Current Flow Cathode
563 wordsA semiconductor device which conducts electric current run in one direction only. This is the simplest kind of semiconductor device, it has two terminals and a single PN junction. One diode can be used as a half-wave rectifier or four as a full-wave rectifier. electron tube, evacuated glass or metal envelope containing two electrodes, a cathode and an anode. It is used as a rectifier and as a detector in electronic circuits such as radio and television receivers. When a positive voltage is appli...
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Lead Acid Battery Positive And Negative
1,037 wordsBatteries and Their Importance- We use batteries everyday, we use them to start our cars and to listen to our Walkmans. I have a few questions: How do batteries work? What are the different kinds of batteries? Why do they die? Why do they lose energy when they are not used for a long time? Well I tried my best to find the best answers for these questions and a little more. Battery, also called an electric cell, is a device that converts chemical energy into electricity. All batteries contain an ...
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