Crystal Needles: Crystal Needles are a great introduction to crystal growing. You can have some delicate‚ really cool crystals going within three hours time! Ingredients: •a cup or small bowl •1/2 cup Epsom salt (magnesium sulfate) •1/2 cup hot tap water •(optional) a drop of food coloring Directions: 1.Add the ingredients together in your bowl or cup. 2.Stir the solution until all the salt is dissolved. There may be some crystals still at the bottom‚ but that’s ok. 3.Place the cup
Premium Sugar Water Sucrose
Planning Introduction Stomata are pores on the bottom of leaves of vascular plants. The function of stomata is to allow gaseous exchange (transpiration) between the plant and the external environment (see diagrams below). This process is carried out by the plant‚ which controls the opening and closing of stomata via the guard cells. The more stomata a leaf contains the greater the rate of gas exchange and the less water it will be able to accumulate. Stomatal pores are formed between
Premium Photosynthesis Standard deviation Leaf
Crystal Properties and Growth of Semiconductors In studying solid state electronic devices we are interested primarily in the electrical behavior of solids. However‚ we shall see in later chapters that the transport of charge through a metal or a semiconductor depends not only on the properties of the electron but also on the arrangement of atoms in the solid. In the first chapter we shall discuss some of the physical properties of semiconductors compared with other solids‚ the atomic arrangements
Premium Crystal structure Solid Silicon
Unit-1 THE SOLID STATE QUESTIONS VSA QUESTIONS (1 - MARK QUESTIONS) 1. 2. 3. 4. 8. 9. What are anistropic substances. Why are amorphous solids isotropic in nature? Why glass is regarded as an amorphous solid? Define the term ’crystal lattice.’ Define the term voids. What type of stochiometric defect is shown by (i) ZnS and (ii) CsCl? [Hint. : (i) Frenkel defect (ii) Schottky defect] *10. If the formula of a compound is A2B‚ which sites would be occupied by A ions? [Hint. : Number of A ions is
Premium Crystal system Crystal Solid
DEMOGRAHICS OF CRYSTAL METHAMPHETAMINE 1 THE DEMOGRAHICS OF CRYSTAL METHAMPHETAMINE 11 The Demographics of Crystal Methamphetamine: Who Uses it‚ and Why? Student?s Name College The Demographics of Crystal Methamphetamine: Who Uses it‚ and Why? Crystal methamphetamine (meth) use evokes passionate discourses in popular culture‚ and in‚ official‚ scholarly‚ and clinical circles. A synthetic drug that has roots in the German amphetamine of the late nineteenth century; crystal meth has gained
Premium Methamphetamine Heroin Illegal drug trade
Liquid Crystal Display A liquid crystal display (LCD) is a flat panel display‚ electronic visual display‚ or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly. LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images which can be displayed or hidden‚ such as preset words‚ digits‚ and 7-segment displays as in a digital clock. They use the same basic technology‚ except that arbitrary
Premium Cathode ray tube Liquid crystal display
Biology Project Autumn Brown 3rd block Mrs. Stephens More than 2‚000 years ago‚ Aristotle began grouping plants and animals into various categories. Although he did not consider the idea that different organisms were related by descent‚ he devised a system that placed these organisms in a hierarchy. Through classification systems‚ scientist have found it easier to find answers to important questions. This way
Premium Bacteria Eukaryote Archaea
2013‚ Section 3 Prepared By Md Abdulla Al Mamun Fahim ID: 102 0366 030 Mahidur Rahman Khan ID: 102 0625 030 Md Nurul Azim Rifat ID: 101 0847 030 Tahsin Shahab Uddin ID: 101 0692 030 Prepared for Dr. S.M. Mostafa Kamal Khan Department of Biology and Microbiology North South University Date of Submission: 20th August‚ 2013 Sl | Topic | Page | 1 | Introduction | 2 | 2 | Description | | | 2.1 Impact on Air | 3 | | 2.2 Impact on Water | 3 | | 2.3 Impact on Soil Pollution | 5 |
Premium Water Industrial Revolution Groundwater
David Crystal Is texting making our language worse or is it improving it? David Crystal‚ “a professor at the University of Wales and is known for his work in English language studies and linguistics” (335)‚ writes about how many people think that texting is destroying our language‚ but Crystal believes that texting can improve children’s ability to read and write‚ he also writes that texting may add a new dimension to communication in an article called “2b or Not 2b”. In the article Crystal starts
Premium Text messaging Philippines Instant messaging
Healing Crystals is a form of alternative medicine that has become extremely popular in our modern world. The use of crystals‚ amulets‚ and other artifacts however isn’t something new and dates back to the Egyptians. They used it decorate their jewelry‚ but also for protection and health. Another great civilization to use crystals were the Greeks. Like todays users they had different properties assigned to each stone‚ for example they had a stone that supposedly keeps you from getting drunk or hung
Premium Medicine Traditional Chinese medicine Acupuncture