'Helium atoms' diaporamas de présentation

RADIOACTIVITY

RADIOACTIVITY. RADIATION. Radiation are when high energy rays and particles are emitted from radioactive sources Radioactivity is the release of the high energy particles or rays. NUCLEAR SYMBOL. Chemists represent certain elements using standard atomic notation

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Nuclear stability and radioactivity

Nuclear stability and radioactivity. Dr. Samer sayed ssaeed@iust.edu.sy. Goals for this Chapter. To consider radioactive decay To view the biological effects of radiation To Calculate Radiation Doses To consider the beneficial uses of radiation. Radioactivity

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Kinetic Theory of Gases Lecturer: Professor Stephen T. Thornton

Kinetic Theory of Gases Lecturer: Professor Stephen T. Thornton. Reading Quiz. A gas cylinder is used to fill dozens of balloons with helium gas over a weekend. Which of the following statements is most true on Monday?

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RADIATION

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The Sun- Chapter 2

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Chapter 19

Chapter 19. The Kinetic Theory of Gases. Chapter-19 The Kinetic Theory of Gases. Topics to be covered: Avogadro number Ideal gas law Internal energy of an ideal gas Distribution of speeds among the atoms in a gas Specific heat under constant volume Specific heat under constant pressure.

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History of the Atom

Lecture #9. History of the Atom. John Dalton's Atomic Theory.

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STP Gas Calculations

STP Gas Calculations. A balloon is filled with 3.78 L of He gas at STP. How many moles of helium atoms are inside?. He. One-step problems:. Solution:. 1 mol. 3.78 L He. = 0.169 mol He. 22.4 L. STP Gas Calculations.

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Star Classification

Star Classification. Classifying Stars. What are some ways that we could group these stars? How do you think scientists group stars?. Analysis Questions. How did your lab group choose to classify the stars? What additional ways do you think that scientists classify stars?

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Radioactive

Radioactive. Dennis Christian Amirulhakim Hanif. Basic Concept. Inside an atom there are three kinds of particle protons neutron electron The nucleus contains protons and neutrons The region beyond the nucleus contains electrons that balance out the charge of the protons

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He-Ne LASER

He-Ne LASER. TOPICS TO BE DISCUSSED. HISTORY CHARACTERSTICS CONSTRUCTION PRINCIPLE AND WORKING LIMITATIONS APPLICATIONS. HISTORY.

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Stellar Evolution

Stellar Evolution. The Life Cycles of Stars. Stage 1- NEBULA. This is a large cloud of dust and gas in space. Stage 2- PROTOSTAR. Gravity compresses the nebula, and it spins and flattens into a disk shape. Stage 3- MAIN-SEQUENCE STAGE.

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LIFE CYCLE OF A STAR

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Stars, Galaxies, and Constellations

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Modelling Metal Foam Formation in Helium Nanodroplets

Modelling Metal Foam Formation in Helium Nanodroplets David McDonagh, The Centre for Interdisciplinary Science Project Supervisor: Professor Andrew Ellis, Department of Chemistry. ABSTRACT:

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spectrum

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spectrum

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