The Five Platonic Solids The five platonic solids are the tetrahedron‚ cube‚ octahedron‚ dodecahedron‚ and a icosahedron. They are named for the greek philosopher Plato. Plato wrote about them in the Timaeus (c.360 B.C.) in which he paired each of the four classical elements earth‚ air‚ water‚ and fire with a regular solid. Earth was paired with the cube‚ air with the octahedron‚ water with the icosahedron‚ and fire with the tetrahedron. The fifth Platonic solid‚ the dodecahedron‚ Plato says that
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Solid Wastes Management BASURA‚ GARBAGE‚ GOMI‚ ORDURES‚ AFVAL‚ SPAZZATURA— whatever people call it‚ solid waste is a problem that must be properly managed. While it is generally understood that proper waste management helps protect human health and the environment and preserve natural resources‚ many do not realize that solid waste also impacts climate change. The manufacture‚ distribution‚ and use of products—as well as the disposal of the resulting waste—all result in emissions of atmospheric
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General College Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 A Laboratory Manual of Small-Scale Experiments for the Independent Study of General College Chemistry 50-0123-CK-02 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on the intellectual properties associated with the LabPaq’s
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SOLID WASTE SEGREGATION AND RECYCLING IN METRO MANILA: HOUSEHOLD ATTITUDES AND BEHAVIOR Ma. Eugenia C. Bennagen‚ Georgina Nepomuceno and Ramil Covar June‚ 2002 ACKNOWLEDGEMENTS This study was made possible through a research grant from the IDRC/EEPSEA to the Resources‚ Environment and Economics Center for Studies‚ Inc. (REECS). The authors acknowledge with great appreciation
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Bette Nesmith Graham As electric typewriters came into widespread use after World War II‚ Bette Nesmith Graham and countless other secretaries let out a collective groan. The new machines did make typing easier‚ but their carbon-film ribbons made it impossible to correct mistakes neatly with a pencil eraser. As a result of this predicament‚ Graham ended up inventing one of the most widely used office products of the 20th century. Born in 1924 in Dallas‚ Texas‚ Bette Graham dropped out of high
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types of solid waste. To handle it well‚ we used to categorize and separate the type of waste. In waste water treatment‚ we simply separate the pollution as municipal waste (more polluted) and runoff(less polluted). But in solid waste‚ we define it as three types of waste that is more detail then water. They are Municipal Solid Waste (MSW)‚ Construction Waste and Special Waste. We defined these wastes by their properties. The figure shows that we have successfully reduce the total solid waste
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ABSTRACT Solid Waste Management is an area that is drawing a lot of attention in urban areas. It is acknowledged that while the problem is acute‚ the financial support is inadequate. This project was conceptualized to demonstrate what could be done with waste generated locally‚ with minimal investments. This pilot plant is expected to provide significant impetus to the eco-friendly initiatives in the institution. The input to the system comes from the food waste that gets generated
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-1Determination of an Unknown Liquid (2-butanol) Through Fundamental Analysis Lee Billips Department of Chemistry‚ Shippensburg University‚ 1871 Old Main Drive. Shippensburg‚ PA‚ 17257. Abstract: The identification and characterization of unknowns are an important part of organic chemistry. It is fundamental to know experimental methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96
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Plane and Solid Geometry Formulas ASIAN DEVELOPMENT FOUNDATION COLLEGE Tacloban City Given four sides a‚ b‚ c‚ d‚ and sum of two opposite angles: Prepared by: RTFVerterra 10 sides 11 sides 12 sides 15 sides 16 sides = = = = = decagon undecagon dodecagon quindecagon hexadecagon RADIUS OF CIRCLES Circle circumscribed about a triangle (Cicumcircle) A= (s − a)(s − b)(s − c)(s − d) − abcdcos2 θ s= a+b+c+d 2 ∠A + ∠C ∠B + ∠D θ= or θ = 2 2 The content of this material is one of the intellectual
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Chemistry Lab Report Purpose The purpose of this lab is to determine the identity of an unknown liquid by measuring its density and its boiling point and try to match it with those solutions given in Table 2 of experiment 2. Procedure Part A In Part A‚ The main purpose was to find the determination of the density of the unknown (j41) and by doing that we had to determine volumes of the unknown liquid (j41) using three different volumetric devices which are graduated cylinder‚ pipette
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