Humphry Davy, Self-Made Chemist
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Optical Timeline by Tony Oursler
Optical Timeline by Tony Oursler 1 Iris is thought to be derived from the RED Symyaz leads the fallen angels. Archimedes (c. 287212 b.c.) is said to Greek word for speaker or messenger. According to Enoch, they came to earth have used a large magnifying lens or Seth, the Egyptian god most associated of their own free will at Mount Hermon, burning-glass, which focused the suns Fifth century b.c. Chinese philosopher with evil, is depicted in many guises: descending like stars. This description rays, to set fire to Roman ships off Mo Ti, in the first description of the gives rise to the name Lucifer, “giver of Syracuse. camera obscura, refers to the pinhole as a black pig, a tall, double-headed figure light.” “collection place” and “locked treasure with a snout, and a serpent. Sometimes And now there is no longer any “I have seen Satan fall like lightning room.” he is black, a positive color for the difficulty in understanding the images in from heaven.” (Luke 10:1820) Egyptians, symbolic of the deep tones of mirrors and in all smooth and bright Platos Cave depicts the dilemma of fertile river deposits; at other times he is surfaces. The fires from within and from the uneducated in a graphic tableau of red, a negative color reflected by the without communicate about the smooth light and shadow. The shackled masses parched sands that encroach upon the surface, and from one image which is are kept in shadow, unable to move crops. Jeffrey Burton Russell suggests variously refracted. -
Mister Mary Somerville: Husband and Secretary
Open Research Online The Open University’s repository of research publications and other research outputs Mister Mary Somerville: Husband and Secretary Journal Item How to cite: Stenhouse, Brigitte (2020). Mister Mary Somerville: Husband and Secretary. The Mathematical Intelligencer (Early Access). For guidance on citations see FAQs. c 2020 The Author https://creativecommons.org/licenses/by/4.0/ Version: Version of Record Link(s) to article on publisher’s website: http://dx.doi.org/doi:10.1007/s00283-020-09998-6 Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online’s data policy on reuse of materials please consult the policies page. oro.open.ac.uk Mister Mary Somerville: Husband and Secretary BRIGITTE STENHOUSE ary Somerville’s life as a mathematician and mathematician). Although no scientific learned society had a savant in nineteenth-century Great Britain was formal statute barring women during Somerville’s lifetime, MM heavily influenced by her gender; as a woman, there was nonetheless a great reluctance even toallow women her access to the ideas and resources developed and into the buildings, never mind to endow them with the rights circulated in universities and scientific societies was highly of members. Except for the visit of the prolific author Margaret restricted. However, her engagement with learned institu- Cavendish in 1667, the Royal Society of London did not invite tions was by no means nonexistent, and although she was women into their hallowed halls until 1876, with the com- 90 before being elected a full member of any society mencement of their second conversazione [15, 163], which (Societa` Geografica Italiana, 1870), Somerville (Figure 1) women were permitted to attend.1 As late as 1886, on the nevertheless benefited from the resources and social nomination of Isis Pogson as a fellow, the Council of the Royal networks cultivated by such institutions from as early as Astronomical Society chose to interpret their constitution as 1812. -
Humphry Davy: Science, Authorship, and the Changing Romantic
Brigham Young University BYU ScholarsArchive Theses and Dissertations 2010-11-29 Humphry Davy: Science, Authorship, and the Changing Romantic Marianne Lind Baker Brigham Young University - Provo Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the English Language and Literature Commons BYU ScholarsArchive Citation Baker, Marianne Lind, "Humphry Davy: Science, Authorship, and the Changing Romantic" (2010). Theses and Dissertations. 2647. https://scholarsarchive.byu.edu/etd/2647 This Thesis is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Title Page Humphry Davy: Science, Authorship, and the Changing ―Romantic I‖ Marianne Lind Baker A thesis submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Master of Arts Nicholas Mason, Chair Leslee Thorne-Murphy Paul Westover Department of English Brigham Young University December 2010 Copyright © 2010 Marianne Baker All Rights Reserved Abstract ABSTRACT Humphry Davy: Science, Authorship, and the Changing ―Romantic I‖ Marianne Lind Baker Department of English Master of Arts In the mid to late 1700s, men of letters became more and more interested in the natural world. From studies in astronomy to biology, chemistry, and medicine, these ―philosophers‖ pioneered what would become our current scientific categories. While the significance of their contributions to these fields has been widely appreciated historically, the interconnection between these men and their literary counterparts has not. A study of the ―Romantic man of science‖ reveals how much that figure has in common with the traditional ―Romantic‖ literary figure embodied by poets like William Wordsworth and Samuel Taylor Coleridge. -
Steel Production Through Electrolysis: Impacts for Electricity Consumption 0, 0, 75
Font Family: Benton Sans 131, 176, 70 Steel production through electrolysis: impacts for electricity consumption 0, 0, 75 204, 102, 51 Adam Rauwerdink 144, 144, 144 VP, Business Development October 18, 2019 Font Family: A 3,000 year old formula Benton Sans Iron Ore Carbon (Coal) Iron Carbon Dioxide 131, 176, 70 Fe2O3 C Fe CO2 0, 0, 75 204, 102, 51 >2 144, 144, 144 Gt CO2 per year (8% of global emissions) Iron Age 1000 BC Digital Age 2019 2 Boston Metal | 2019 Font Family: Steel in 2018 Benton Sans 131, 176, 70 Aluminium is #2 at 1,800 64 million tonnes 0, 0, 75 million tonnes 204, 102, 51 70% 30% 144, 144, 144 Integrated Steel Mill Mini Mill (Iron ore new steel units) (Scrap recycled steel units) Source: World Steel Association 3 Boston Metal | 2019 Font Family: Integrated steel mill: material flow Benton Sans 131, 176, 70 0, 0, 75 204, 102, 51 144, 144, 144 4 Boston Metal | 2019 Font Family: Molten oxide electrolysis (MOE) is emissions free Benton Sans Molten Oxide Electrolysis (MOE) 131, 176, 70 Iron Ore Electricity Iron Oxygen 0, 0, 75 - Fe2O3 e Fe O2 204, 102, 51 144, 144, 144 No carbon in the process = No CO2 emitted Electricity decarbonization eliminates/reduces indirect emissions! 5 Boston Metal | 2019 Font Family: Changing the formula from coal to electricity Benton Sans Iron Ore Carbon (Coal) Iron Carbon Dioxide 131, 176, 70 Fe2O3 C Fe CO2 0, 0, 75 204, 102, 51 Molten Oxide Electrolysis (MOE) 144, 144, 144 Iron Ore Electricity Iron Oxygen - Fe2O3 e Fe O2 6 Boston Metal | 2019 Font Family: MOE is more energy efficient Benton -
Electrochemistry of Fuel Cell - Kouichi Takizawa
ENERGY CARRIERS AND CONVERSION SYSTEMS – Vol. II - Electrochemistry of Fuel Cell - Kouichi Takizawa ELECTROCHEMISTRY OF FUEL CELL Kouichi Takizawa Tokyo Electric Power Company, Tokyo, Japan Keywords : electrochemistry, fuel cell, electrochemical reaction, chemical energy, anode, cathode, electrolyte, Nernst equation, hydrogen-oxygen fuel cell, electromotive force Contents 1. Introduction 2. Principle of Electricity Generation by Fuel Cells 3. Electricity Generation Characteristics of Fuel Cells 4. Fuel Cell Efficiency Glossary Bibliography Biographical Sketch Summary Fuel cells are devices that utilize electrochemical reactions to generate electric power. They are believed to give a significant impact on the future energy system. In particular, when hydrogen can be generated from renewable energy resources, it is certain that the fuel cell should play a significant role. Even today, some types of fuel cells have been already used in practical applications such as combined heat and power generation applications and space vehicle applications. Though research and development activities are still required, the fuel cell technology is one of the most important technologies that allow us to draw the environment friendly society in the twenty-first century. This section describes the general introduction of fuel cell technology with a brief overview of the principle of fuel cells and their historical background. 1. Introduction A fuel cellUNESCO is a system of electric power – generation,EOLSS which utilizes electrochemical reactions. It can produce electric power by inducing both a reaction to oxidize hydrogen obtained by reforming natural gas or other fuels, and a reaction to reduce oxygen in the air, each occurringSAMPLE at separate electrodes conne CHAPTERScted to an external circuit. -
Teaching H. C. Ørsted's Scientific Work in Danish High School Physics
UNIVERSITY OF COPENHAGEN FACULTY OF SCIENCE Ida Marie Monberg Hindsholm Teaching H. C. Ørsted's Scientific Work in Danish High School Physics Masterʹs thesis Department of Science Education 19 July 2018 Master's thesis Teaching H. C. Ørsted’s Scientific Work in Danish High School Physics Submitted 19 July 2018 Author Ida Marie Monberg Hindsholm, B.Sc. E-mail [email protected] Departments Niels Bohr Institute, University of Copenhagen Department of Science Education, University of Copenhagen Main supervisor Ricardo Avelar Sotomaior Karam, Associate Professor, Department of Science Education, University of Copenhagen Co-supervisor Steen Harle Hansen, Associate Professor, Niels Bohr Institute, University of Copenhagen 1 Contents 1 Introduction . 1 2 The Material: H. C. Ørsted's Work . 3 2.1 The Life of Hans Christian Ørsted . 3 2.2 Ørsted’s Metaphysical Framework: The Dynamical Sys- tem............................. 6 2.3 Ritter and the failure in Paris . 9 2.4 Ørsted’s work with acoustic and electric figures . 12 2.5 The discovery of electromagnetism . 16 2.6 What I Use for the Teaching Sequence . 19 3 Didactic Theory . 20 3.1 Constructivist teaching . 20 3.2 Inquiry Teaching . 22 3.3 HIPST . 24 4 The Purpose and Design of the Teaching Sequence . 27 4.1 Factual details and lesson plan . 28 5 Analysis of Transcripts and Writings . 40 5.1 Method of Analysis . 40 5.2 Practical Problems . 41 5.3 Reading Original Ørsted's Texts . 42 5.4 Inquiry and Experiments . 43 5.5 "Role play" - Thinking like Ørsted . 48 5.6 The Reflection Corner . 51 5.7 Evaluation: The Learning Objectives . -
5. the Lives of Two Pioneering Medical Chemists.Indd
The West of England Medical Journal Vol 116 No 4 Article 2 Bristol Medico-Historical Society Proceedings The Lives of Two Pioneering Medical-Chemists in Bristol Thomas Beddoes (1760-1808) and William Herapath (1796-1868) Brian Vincent School of Chemistry, University of Bristol, Bristol, BS8 1TS. Presented at the meeting on Dec 12th 2016 ABSTRACT From the second half of the 18th century onwards the new science of chemistry took root and applications were heralded in many medical-related fields, e.g. cures for diseases such as TB, the prevention of epidemics like cholera, the application of anaesthetics and the detection of poisons in forensics. Two pioneering chemists who worked in the city were Thomas Beddoes, who founded the Pneumatic Institution in Hotwells in 1793, and William Herapath who was the first professor of chemistry and toxicology at the Bristol Medical School, located near the Infirmary, which opened in 1828. As well as their major contributions to medical-chemistry, both men played important roles in the political life of the city. INTRODUCTION The second half of the 18th century saw chemistry emerge as a fledgling science. Up till then there was little understanding of the true nature of matter. The 1 The West of England Medical Journal Vol 116 No 4 Article 2 Bristol Medico-Historical Society Proceedings classical Greek idea that matter consisted of four basic elements (earth, fire, water and air) still held sway, as did the practice of alchemy: the search for the “elixir of life” and for the “philosophers’ stone” which would turn base metals into gold. -
Electrochemistry –An Oxidizing Agent Is a Species That Oxidizes Another Species; It Is Itself Reduced
Oxidation-Reduction Reactions Chapter 17 • Describing Oxidation-Reduction Reactions Electrochemistry –An oxidizing agent is a species that oxidizes another species; it is itself reduced. –A reducing agent is a species that reduces another species; it is itself oxidized. Loss of 2 e-1 oxidation reducing agent +2 +2 Fe( s) + Cu (aq) → Fe (aq) + Cu( s) oxidizing agent Gain of 2 e-1 reduction Skeleton Oxidation-Reduction Equations Electrochemistry ! Identify what species is being oxidized (this will be the “reducing agent”) ! Identify what species is being •The study of the interchange of reduced (this will be the “oxidizing agent”) chemical and electrical energy. ! What species result from the oxidation and reduction? ! Does the reaction occur in acidic or basic solution? 2+ - 3+ 2+ Fe (aq) + MnO4 (aq) 6 Fe (aq) + Mn (aq) Steps in Balancing Oxidation-Reduction Review of Terms Equations in Acidic solutions 1. Assign oxidation numbers to • oxidation-reduction (redox) each atom so that you know reaction: involves a transfer of what is oxidized and what is electrons from the reducing agent to reduced 2. Split the skeleton equation into the oxidizing agent. two half-reactions-one for the oxidation reaction (element • oxidation: loss of electrons increases in oxidation number) and one for the reduction (element decreases in oxidation • reduction: gain of electrons number) 2+ 3+ - 2+ Fe (aq) º Fe (aq) MnO4 (aq) º Mn (aq) 1 3. Complete and balance each half reaction Galvanic Cell a. Balance all atoms except O and H 2+ 3+ - 2+ (Voltaic Cell) Fe (aq) º Fe (aq) MnO4 (aq) º Mn (aq) b. -
Electrolysis Through Magnetic Field for Future Renewable Energy
International Journal of Recent Technology and Engineering (IJRTE) ISSN: 2277-3878, Volume-8 Issue-2S, July 2019 Electrolysis Through Magnetic Field for Future Renewable Energy Asaad Zuhair Abdulameer, Zolkafle Buntat, Rai Naveed Arshad, Zainuddin Nawaw Production of Hydroxide through the electrolysis of water, Abstract: Hydrocarbon fuels are the best source of energy; resolve numerous possible problems of using hydroxide as a however, they have some drawbacks. Because of extensive usage fuel supplement [9, 10]. In this attempt, magnetic field and replacement difficulties, it is not financially possible to electrolysis is a technique of electrolysis that is a more entirely disregard them in the coming days. Hydrogen with Oxygen (hydroxide-HHO) gas as a fuel supplement is one convenient light source to compare with solar energy for possible way to reduce consumption and emissions of commercial electrolysis [11]. Although this process gives a hydrocarbon fuels. However, the accessibility and rate of small proportion of hydrogen production by using the current compressed hydrogen (H2) have made it challenging. Electrolysis method, we believed that this process would contribute a lot of water, resolve numerous possible complications of using to society if the existing methods are upgraded with suitable hydroxide for fuel to progress hydrocarbon burning. This materials and substances. research introduces a new design of electrolyzer with proper selection of electrode material and types integrated with magnetic field system, which can reduce the energy consumption. The effect of the optimum magnetic field strength was measured for this process with tap and distilled water. Two supplementary compounds, Sodium Hydroxide (NaOH) and Soda (NaHCO3), with concentration 3333ppm 1.5 litres of the electrolyte was used in this process. -
Humphry Davy, Nitrous Oxide, the Pneumatic Institution, and the Royal Institution
Am J Physiol Lung Cell Mol Physiol 307: L661–L667, 2014. First published August 29, 2014; doi:10.1152/ajplung.00206.2014. Perspectives Humphry Davy, nitrous oxide, the Pneumatic Institution, and the Royal Institution John B. West Department of Medicine, University of California San Diego, La Jolla, California Submitted 23 July 2014; accepted in final form 18 August 2014 West JB. Humphry Davy, nitrous oxide, the Pneumatic Institu- magnesium, boron, and barium. Davy is also well known as the tion, and the Royal Institution. Am J Physiol Lung Cell Mol Phy- person responsible for developing the miner’s safety lamp. siol 307: L661–L667, 2014. First published August 29, 2014; There is an extensive literature on Davy. A readable intro- doi:10.1152/ajplung.00206.2014.—Humphry Davy (1778–1829) has an duction is Hartley’s (8). The biography by Knight (10) is more interesting place in the history of respiratory gases because the detailed and contains useful citations to primary sources. Tre- Pneumatic Institution in which he did much of his early work signaled neer (17) wrote another biography with an emphasis on Davy’s the end of an era of discovery. The previous 40 years had seen relations with other people including his wife and also Faraday. essentially all of the important respiratory gases described, and the Partington (12) is authoritative on his chemical research. Institution was formed to exploit their possible value in medical Davy’s collected works are available (6). treatment. Davy himself is well known for producing nitrous oxide and demonstrating that its inhalation could cause euphoria and height- Early Years ened imagination. -
The Effect of Magnetic Field on the Dynamics of Gas Bubbles in Water Electrolysis
The Effect of Magnetic Field on the Dynamics of Gas Bubbles in Water Electrolysis Yan-Hom Li ( [email protected] ) Department of Mechanical and Aerospace Engineering, Chung-Cheng Institute of Technology, National Defense University, Taiwan Yen-Ju Chen Department of Mechanical and Aerospace Engineering, Chung-Cheng Institute of Technology, National Defense University, Taiwan Research Article Keywords: gas bubbles, platinum electrodes, magnetic eld result, downward Lorentz forces Posted Date: March 8th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-283081/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Scientic Reports on April 30th, 2021. See the published version at https://doi.org/10.1038/s41598-021-87947-9. The effect of magnetic field on the dynamics of gas bubbles in water electrolysis Yan-Hom Li1,2,*, Yen-Ju Chen 1,⸸ 1Department of Mechanical and Aerospace Engineering, Chung-Cheng Institute of Technology, National Defense University, Taoyuan, 335, Taiwan, 2System Engineering and Technology Program, National Yang Ming Chiao Tung University, Hsin-Chu, 300, Taiwan *corresponding. hom_li @hotmail.com ⸸these authors contributed equally to this work Abstract In this work, the movement of the gas bubbles evolved from the platinum electrodes in the influence of various magnetic field configurations are experimentally investigated. The oxygen and hydrogen bubbles respectively evolve from the surface of anode and cathode have distinctive behaviors in the presence of magnetic fields due to their paramagnetic and diamagnetic characteristics. The magnetic field perpendicular to the surface of the horizontal electrode induces the revolution of the bubbles. -
Electrolysis of Salt Water
ELECTROLYSIS OF SALT WATER Unit: Salinity Patterns & the Water Cycle l Grade Level: High school l Time Required: Two 45 min. periods l Content Standard: NSES Physical Science, properties and changes of properties in matter; atoms have measurable properties such as electrical charge. l Ocean Literacy Principle 1e: Most of of Earth's water (97%) is in the ocean. Seawater has unique properties: it is saline, its freezing point is slightly lower than fresh water, its density is slightly higher, its electrical conductivity is much higher, and it is slightly basic. Big Idea: Water is comprised of two elements – hydrogen (H) and oxygen (O). Distilled water is pure and free of salts; thus it is a very poor conductor of electricity. By adding ordinary table salt (NaCl) to distilled water, it becomes an electrolyte solution, able to conduct electricity. Key Concepts o Ionic compounds such as salt water, conduct electricity when they dissolve in water. o Ionic compounds consist of two or more ions that are held together by electrical attraction. One of the ions has a positive charge (called a "cation") and the other has a negative charge ("anion"). o Molecular compounds, such as water, are made of individual molecules that are bound together by shared electrons (i.e., covalent bonds). o Essential Questions o What happens to salt when it is dissolved in water? o What are electrolytes? o How can we determine the volume of dissolved ions in a water sample? o How are atoms held together in an element? Knowledge and Skills o Conduct an experiment to see that water can be split into its constituent ions through the process of electrolysis.