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From near-field optics to optical antennas
From near-field optics to optical antennas

... A near field can arise from primary sources, such as electrically driven currents, or secondary sources, such as induced polarization currents. The choice of basis in which to express the field depends on the geometry of that source. For example, the fields near a planar sample surface are convenien ...
Chapter 3 Molecules, Compounds, and Chemical Equations
Chapter 3 Molecules, Compounds, and Chemical Equations

... elements found in the compound and the ratio of their atoms. 9They do not describe how many atoms, the order of attachment, or the shape. 9The formulas for ionic compounds are empirical. The empirical formula for the ionic compound fluorspar is CaCl2. This means that there is 1 Ca2+ ion for every 2 ...
classification of chemical reactions
classification of chemical reactions

... Factors that affect the rates of Reactions  Temperature: an ___________________in temperature _____________________ the rate of chemical reactions (particles move faster, so reaction rate increases) ...
Chapter 2 – Atoms and Elements - U of L Class Index
Chapter 2 – Atoms and Elements - U of L Class Index

... Ψ is called the wavefunction of the electron. There is an infinite number of wavefunctions permitted by the Schrödinger equation – each with a different energy (E). (V is the potential energy from attraction of the electron to the nucleus; it is constant. π, m and b are also fundamental constants.) ...
3 - Greene County ESC
3 - Greene County ESC

... 13. Demonstrate that near Earth’s surface an object’s gravitational potential energy depends upon its weight (mg where m is the object’s mass and g is the acceleration due to gravity) and height (h) above a reference surface ...
The influence of divergence angle on the deposition of neutral
The influence of divergence angle on the deposition of neutral

... effects do not affect the resolution limit. Also, because they are charge-neutral, unlike electrons or ions, neutral atoms are not affected by the space charge effect, which makes it easy to concentrate many particles into a very small region.[1−3] The basic principle of atom lithography relies on the ...
atoms
atoms

... Atomic Number (Z): Number of protons in an atom’s nucleus. Equivalent to the number of electrons around an atom’s nucleus Mass Number (A): The sum of the number of protons and the number of neutrons in an atom’s nucleus Isotope: Atoms with identical atomic numbers but different mass numbers ...
Dalton Model Reading
Dalton Model Reading

... Louis Proust in 1799, this law states that if a compound is broken down into its constituent elements, then the masses of the constituents will always have the same proportions, regardless of the quantity or source of the original substance. John Dalton studied and expanded upon this previous work a ...
Presentation Lesson 27 Quantum Physics
Presentation Lesson 27 Quantum Physics

... • The radii of the electron orbits in the Bohr’s atomic model are determined by the amount of electric charge in the nucleus • As the positive charge in the nucleus increased, the negative electrons also increased. The inner orbits shrink in size due to stronger electric attraction. However, it won’ ...
Document
Document

... 2.The magnitude of ΔH is directly proportional to the quantities of reactants and products in a reaction. If the coefficients in a balanced reaction are multiplied by integer, the value of ΔH is multiplied by the same integer. Xe(g) + 2F2(g) → XeF4(s), ΔH = -251 kJ ...
Tuesday, Define the law of definite proportions
Tuesday, Define the law of definite proportions

... number may be expressed as 6.02 x 10 23, gram molecular mass and molar mass of the representative particles of that substance (atoms, ions, molecules or formula units). One mole of a gas occupies a volume of 22.4 L at STP (standard temperature and pressure). Standard pressure is equivalent to 101.3 ...
C - Upton-by-Chester High School
C - Upton-by-Chester High School

... No free electrons or movement of charge (1) In graphite only 3 electrons are used in bonding (1) Leaves a free electron to conduct electricity (1) c) Ionic substances conduct when melted or dissolved, but not when solid. When solid the ions are in fixed positions, so there is no movement of charge ( ...
Module 6 : Light Emitting Diode
Module 6 : Light Emitting Diode

... An LED is a p-n junction with a heavily doped n-type semiconductor(n ) and a lightly doped p-type. The device works if it is forward biased. When p- side of the junction is connected to the positive terminal of a battery and the n side to the negative terminal, the barrier hight gets reduced and th ...
Chapter 7 Notes PowerPoint Version
Chapter 7 Notes PowerPoint Version

... the empirical formula and experimental molar mass of a compound. Step 1: Determine the molar mass of the given empirical formula. Step 2: Solve for n by dividing the experimental molar mass by the molar mass of the empirical formula. *Remember: n(empirical formula) = molecular formula ...
Chem 30A Fa_06 FE Review
Chem 30A Fa_06 FE Review

... 160 Ci, what would be its activity after 24 days? How many days does it take for the activity to decrease to 5 Ci? (Answer: 20 Ci; 40 days) ...
Atoms – How Small, and How Large!
Atoms – How Small, and How Large!

... thinkers like Kanaada in India, and Democritus in Greece, almost in the 5th century BC. Atoms moved from philosophy to science when chemist John Dalton2 (1808) made a hypothesis of atoms as extremely tiny building blocks of all chemical elements. Later on, in the 19th century, efforts were made to as ...
solutions - The University of Sydney
solutions - The University of Sydney

... Since the frequency ! = 2.0 "1014 Hz is less than this no electrons will be produced. (2 marks) (b) When the intensity of light is doubled the maximum KE of electrons does not change. However, the number of electrons ejected per unit time will double. (1 mark) (c) In the classical picture the light ...
NOMENCLATURE OF IONIC COMPOUNDS CHEMISTRY 1411
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... The name of the compound is copper (II) sulfate. However, this does not include the water of hydration. There are five molecules of water associated with every molecule of the compound. ...
[pdf]
[pdf]

... events in a medium. It has been educed also that the motionless scatterers 共that were used as a model of burned skin兲 may essentially influence the Doppler spectral bandwidth. There is a very simple physical explanation for this phenomenon. Static layer extrudes moving particles from the probing vol ...
Bonding
Bonding

... • This is why oil and water will not mix! Oil is nonpolar, and water is polar. • The two will repel each other, and so you can not dissolve one in the other ...
Multiphoton ionization of inner-valence electrons and fragmentation
Multiphoton ionization of inner-valence electrons and fragmentation

... For the MPI of ethylene the value of gcr is calculated to be ; 3.05. Our experimental result on the MPI of rare gas atoms w13x has shown that the criterion expressed by Eq. Ž8. is too strong and in practice the criterion g - gcr is good enough for real experiments. It is impossible to give a more pr ...
No Slide Title
No Slide Title

... hydrogen that represents the movement of an electron from a Bohr orbit with n = 6 to n = 4. 2. Determine the wavelength of light that must be absorbed by a hydrogen atom in its ground state to excite it to the n = 2 orbit. NOTE: At first, Bohr’s model appeared to be very promising. The energy levels ...
part 1
part 1

... species independence of our gratings (cf light gratings) allows us to switch alkalis easily, and velocity multiplexing will increase our accuracy and precision to the 0.1% and 0.01% targets. Our relative measurements will ultimately be normalized by a single, higher precision experiment using a sod ...
Michael_Chau_Laeer_Telecomunication_Report
Michael_Chau_Laeer_Telecomunication_Report

... increases (with the exception of the last entry in the table) with increasing resistance of the 2 kΩ potentiometer. It can be inferred from the data that the current increases through laser as a result of the variant resistance of the potentiometer because of Ohm’s Law (V = I x R). We also found tha ...
Atomic Number, Atomic Mass
Atomic Number, Atomic Mass

... i.e. number of protons (Z) + number of neutrons (N) ...
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Rutherford backscattering spectrometry



Rutherford backscattering spectrometry (RBS) is an analytical technique used in materials science. Sometimes referred to as high-energy ion scattering (HEIS) spectrometry, RBS is used to determine the structure and composition of materials by measuring the backscattering of a beam of high energy ions (typically protons or alpha particles) impinging on a sample.
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