4.3.6. The abrupt p-i-n junction
For a p-i-n junction the above expressions take the following modified form:
n + p + u = i Va
(4.3.36)
qN a x 2p
qN a x p d
qN d x n2
n =
, p =
and u =
2 s
2 s
s
(4.3.37)
qN a x p = qN d xn
(4.3.38)
Where u is the potenti
FranckCondon principle
Figure 1. FranckCondon principle energy diagram. Since electronic transitions are very fast compared with nuclear motions,
vibrational levels are favored when they correspond to a minimal change in the nuclear coordinates. The poten
PHYS 652: Astrophysics
5
20
Lecture 5: Solutions of Friedmann Equations
A man gazing at the stars is proverbially at the mercy of the puddles in the road.
Alexander Smith
The Big Picture: Last time we derived Friedmann equations a closed set of solutions
PY4113 Experimental Physics III
Kashas Rule
Frederick Richardson with John Hurley and Philip Lucid
22/09/2016
Abstract
In this experiment Kashas rule was verified for electronically excited molecules. This was done by exciting the electrons two dyes
disso
Kashas rule
Scheme of Kashas rule. A photon with energy h1 excites an electron of fundamental level, of energy E0 , up to an excited energy
level (e.g. E1 or E2 ) or on one of the vibrational sub-levels. Vibrational relaxation then takes place between exc
Agilent 8453 UV-visible
Spectroscopy System
Operators Manual
Notices
Agilent Technologies, Inc. 2002,
2003-2008, 2011
No part of this manual may be reproduced in
any form or by any means (including electronic storage and retrieval or translation
into a f
PY4112 - Gravitation and Cosmology
Problem Set 9
1) Consider the space time specified by the line element
GM
ds = 1
r
2
2
2
GM
dt + 1
dr2 + r2 d2
r
2
Except for r = GM , the coordinate t is always timelike and the coordinate
r is always spacelike.
(i) F
Physics 2107
Moments of Inertia
Experiment 1
Read the following background/setup and ensure you are familiar with the
theory required for the experiment. Please also fill in the missing equations 5,
7 and 9.
Background/Setup
The moment of inertia, I, of a
PY2107
Newtons Rings
Experiment 5
_
Physics 2107
Newtons Rings
Experiment 5
In this experiment you will study the phenomenon of Newtons Rings, and use it to
(A) Measure the wavelength of light, and
(B) The refractive index of water.
Background
In this opt
PY2107
Experiments with Sound
Experiment 3
_
Physics 2107
Experiments with Sound
Experiment 3
Background/Setup Elastic Deformation
Stretching, Compression and Youngs Modulus
We all know that a spring returns to its original shape when the applied force th
PY2107
(A) Newtonian Cooling and (B) the Adiabatic Index of Air
Experiment 4
_
Physics 2107
(A) Newtonian Cooling and
Experiment 4
(B) Adiabatic Index of Air
This experiment consists of two components, Parts A and B. In the first, you will
measure the adi
PY2107
The Photoelectric Effect
Experiment 7
_
Physics 2107
The Photoelectric Effect
7
Background
In 1899 J.J. Thomson found that under certain conditions electrons are emitted from a
clean metal surface when exposed to electromagnetic radiation. This phe
PY2107
The Balmer Series of Hydrogen
Experiment 8
_
Physics 2107
The Balmer Series of Hydrogen
8
- Determination of the Rydberg Constant
Background
Observing that atoms only emit light at definite spectral frequencies demonstrates
electrons in atoms only
Coupled Oscillations
Definition:
Summary:
linear chain of n identical bodies (mass m) connected to one another and to fixed endpoints by
identical ideal springs (spring constant k)
The positions as functions of time are
n
xP(t) = 3 c ivPi cosit
distance
PY2107
Millikens Experiment
Experiment 6
_
Physics 2107
The charge on the electron:
Experiment 6
Millikens Oil Drop Experiment
Background
In 1909 Milliken designed an experiment to measure the value of the charge on a
single electron, e, as follows.
Consi
Observation of the Sun and Moon with a small telescope
Open practical PY2107
Important note: each person must obtain their own independent
measurements, and use these in their own, independently written, report.
Part 1: Observations of the Sun
Objective
AM1052: Introduction to Mechanics
Section 1: Overview of Classical Mechanics
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
September 19, 2013
D. He
AM1052: Introduction to Mechanics
Section 4.1: Forces
Introduction
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
November 6, 2013
D. Henry (UCC)
AM
AM1052: Introduction to Mechanics
Section 4.2: Forces
Resultants and Resolution
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
November 6, 2013
D. H
AM1052: Introduction to Mechanics
Section 4.3: Forces
Moments and Couples
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
November 13, 2013
D. Henry
AM1052: Introduction to Mechanics
Section 4.4: Forces
Complete Static Equilibrium
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
November 13, 2013
D
AM1052: Introduction to Mechanics
Section 5.3: Dynamics
Keplers Laws
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
December 2, 2013
D. Henry (UCC)
AM1052
TP1, 2013/2014
1 / 16
Keplers Laws
Keplers Laws
Johannes Kepler
AM1052: Introduction to Mechanics
Section 3.2: Kinematics
Rectilinear motion of a particle- Part (a)
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
AM1052: Introduction to Mechanics
Section 2.4: Vector Analysis
The Vector Product
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
October 2, 2013
D.
AM1052: Introduction to Mechanics
Section 2.2: Vector Analysis
Unit Vectors and the Coordinate Axes
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
S
AM1052: Introduction to Mechanics
Section 2.1: Vector Analysis
Introduction to Vector Analysis
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
Septem
AM1052: Introduction to Mechanics
Section 3.1: Kinematics
Introduction to Kinematics
David Henry
d.henry@ucc.ie
School of Mathematical Sciences
University College Cork
(adapted from notes by Andreas Amann, Gareth Thomas and James Gleeson)
October 10, 2013