Abstract: Definitions and classifications used in the study of air pollution are introduced. lsointroduced are a brief history of air pollution‚ its regulation‚ and trends of its ambient concentrations and emissions. Keywords: Anthropogenic‚ biogenic‚ geogenic emissions biogenic‚; primary and secondary pollutants; criteria‚ hazardous‚ radioactive‚ indoor pollutants; sulfur smog‚ photochemical smog; UN-ECE‚ US-EPA‚ Clean Air Act. Air pollution spreads easily as it travels into the atmosphere.
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General Knowledge questions and answers on various inventions and discoveries in the world. These questions are important for various competitive exam point of view. 1) Who invented the telephone ? a. J.L Baird b. Alexander Graham Belt c. Marconi d. James Dewar Show/Hide Answer Answer =B 2) Who propounded the Quantum Theory ? a. Albert Einstein b. James C. Maxwell c. Heisenberg d. Max Planck Show/Hide Answer Answer =D 3) Who is the inventor of railway
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Office Use Only | | | | | | | | | | | | Monash University Semester Two Examination Period 2010 Faculty Of Science EXAM CODES: CHM1022 TITLE OF PAPER: CHEMISTRY EXAM DURATION: 3 hours writing time READING
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1. John Earman Philosopher 2. John Earman (born 1942) is a philosopher of physics. He is an emeritus professor in the History and Philosophy of Science department at the University of Pittsburgh. He has also taught at UCLA‚ the Rockefeller University‚ and the University of Minnesota‚ and was president of the Philosophy of Science Association. He received his PhD from Princeton in 1968.[1] 3. Born: March 30‚ 1942 (age 72) 4. Education: Princeton University (1968) 5. Awards: Guggenheim Fellowship
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Etymology The name atom comes from the Greek ἄτομος (atomos‚ "indivisible") from ἀ- (a-‚ "not") and τέμνω (temnō‚ "I cut")‚[3] which means uncuttable‚ or indivisible‚ something that cannot be divided further.[4] The concept of an atom as an indivisible component of matter was first proposed by early Indian and Greek philosophers. In the 18th and 19th centuries‚ chemists provided a physical basis for this idea by showing that certain substances could not be further broken down by chemical methods
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Powers and Authority GSIS is empowered and authorized to do the following: a. engage in the business and operation of all kinds of insurance and reinsurance and all other forms of undertakings to indemnify any person or property against loss‚ damage‚ or liability‚ including third party liability‚ arising from unknown or contingent events; b. reinsure with and accept reinsurance from insurance and reinsurance companies in the Philippines and abroad; c. issue policies denominated in any foreign
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adioisotopes: What Are They and How Are They Made?What are isotopes?The isotopes of an element are all the atoms that have in their nucleus the number of protons (atomic number) corresponding to the chemical behavior of that element. However‚ the isotopes of a single element vary in the number of neutrons in their nuclei. Since they still have the same number of protons‚ all these isotopes of an element have identical chemical behavior. But since they have different numbers of neutrons‚ these isotopes
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Brief Historical Development and Contributions of Chemistry for Modern Civilization Introduction: As defined by Oxford Dictionary‚ Chemistry is the scientific study of the structure of substances‚ how they react when combined or in contact with one another and how they behave under different conditions . In other words‚ Chemistry is the study of the materials and substances of the world in which we live. The materials‚ which make up the earth‚ sea and air‚ are called raw materials. These include
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Holocaust Timeline 1933-1946 The beginning- 1933: Adolf Hitler is appointed Chancellor of Germany. A Chancellor is a leader or head official of a country 1933: Nazis open Dachau concentration camp near the city of Munich. 1934: German President Von Hindenburg dies. Hitler becomes Fuhrer (leader). As he was next in line… 1935: Nuremberg Race Laws against Jews decreed (went into effect) German Jews deprived of citizenship. Jews were not allowed to marry Aryan Germans. 1936: Olympic Games begin in
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1440: Nicolas Cusanus‚ Earth is in motion 1440: Nicolas Cusanus‚ infinite universe 1450: Johann Gutenberg‚ first printing press in Europe 1472: Johannes Regiomontanus‚ observation of Halley’s comet 1480: Leonardo de Vinci‚ description of parachute 1480: Leonardo de Vinci‚ compares reflection of light to reflection of sound waves 1490: Leonardo de Vinci‚ capillary action 1492: Leonardo de Vinci‚ foresees flying machines 1494: Leonardo de Vinci‚ foresees pendulum clock 1514: Nicolaus Copernicus
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