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Accurate Clock Pendulums

Robert J. Matthys

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.001.0001
Subject:
Physics, History of Physics

The Shortt clock, made in the 1920s, is the most famous accurate clock pendulum ever known, having an accuracy of one second per year when kept at nearly constant temperature. Almost all of a ... More


Bob shape

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0013
Subject:
Physics, History of Physics

The sphere and the vertically oriented cylinder are more repeatable and predictable bob shapes than the more efficient, lower-drag prolate spheroid and football shapes. As a bob shape, prolate ... More


Effect of the pendulum rod on Q

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0026
Subject:
Physics, History of Physics

A pendulum rod's air drag has a significant effect on the pendulum's Q. Many years ago, an experiment was carried out to determine the effect of bob shape on a pendulum's Q. The results showed that a ... More


Pendulum air movement: A failed experiment

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0028
Subject:
Physics, History of Physics

A previous experiment showed that the walls of a pendulum clock case can slow down the pendulum via air drag by about 1 second per day. The pendulum has a 2-second period. This chapter describes an ... More


* THEORY FACADES

Mark Wilson

in Wandering Significance: An Essay on Conceptual Behaviour

Published in print:
2006
Published Online:
January 2007
ISBN:
9780199269259
eISBN:
9780191710155
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199269259.003.0004
Subject:
Philosophy, Philosophy of Language

Because classical demands on conceptual understanding are quite strong and can prove potentially inhibiting within a scientific context, various philosopher/scientists in the late 19th century ... More


Aerodynamics

John J. Videler

in Avian Flight

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199299928
eISBN:
9780191714924
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199299928.003.0004
Subject:
Biology, Ornithology

Main forces on a flying bird are lift, weight, thrust, and drag. Quantitative visualization of the flow shows how these forces result from the interactions between bird and air. Conventional flow ... More


Kahneman's “Objective Happiness”

Fred Feldman

in What Is This Thing Called Happiness?

Published in print:
2010
Published Online:
May 2010
ISBN:
9780199571178
eISBN:
9780191722547
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199571178.003.0003
Subject:
Philosophy, Moral Philosophy, Philosophy of Mind

In ‘Objective Happiness', Daniel Kahneman apparently means to offer an account of the nature of happiness. A person's objective happiness level at a moment (or “instant utility”) is defined as the ... More


Inflation Adjustments

Hiromitsu Ishi

in The Japanese Tax System

Published in print:
2001
Published Online:
November 2003
ISBN:
9780199242566
eISBN:
9780191596452
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/0199242569.003.0007
Subject:
Economics and Finance, South and East Asia

Discusses on the impact of income tax structure. It is widely acknowledged that the major goal of tax reductions was to adjust for the heavier tax burdens arising from inflation; at least it was true ... More


MOTION OF CHARGED QUANTIZED VORTEX RINGS IN SUPERFLUID HE II

A.F. Borghesani

in Ions and electrons in liquid helium

Published in print:
2007
Published Online:
January 2008
ISBN:
9780199213603
eISBN:
9780191707421
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213603.003.0008
Subject:
Physics, Condensed Matter Physics / Materials

This chapter describes the motion of charged quantized vortex rings in superfluid He II. The experimental results are presented and discussed. The striking behavior of the energy-velocity ... More


THE LATTICE RESISTANCE

A. S. Argon

in Strengthening Mechanisms in Crystal Plasticity

Published in print:
2007
Published Online:
September 2007
ISBN:
9780198516002
eISBN:
9780191705717
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198516002.003.0004
Subject:
Physics, Crystallography: Physics

One of the most fundamental resistances to dislocation motion is that which the discrete lattice offers in a pure crystalline material in a temperature range where diffusion plays no role. This ... More


Geisha of a Different Kind: Race and Sexuality in Gaysian America

C. Winter Han

Published in print:
2015
Published Online:
March 2016
ISBN:
9781479831951
eISBN:
9781479824700
Item type:
book
Publisher:
NYU Press
DOI:
10.18574/nyu/9781479831951.001.0001
Subject:
Sociology, Gerontology and Ageing

In gay bars and nightclubs across America, and in gay-oriented magazines and media, the buff, macho, White gay man is exalted as the ideal. For gay Asian American men, often viewed by their peers as ... More


DUSTY PLASMAS

V. E. Fortov, I. T. Iakubov, and A. G. Khrapak

in Physics of Strongly Coupled Plasma

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199299805
eISBN:
9780191714948
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199299805.003.0011
Subject:
Physics, Nuclear and Plasma Physics

This chapter discusses the physics of complex (dusty) plasmas — low-temperature plasmas containing charged microparticles — and the major types of experimental dusty plasmas. Various elementary ... More


Bearded Queens and Amazons: Cross-Dressing, Disguise, and Deception

Dúnlaith Bird

in Travelling in Different Skins: Gender Identity in European Women's Oriental Travelogues, 1850-1950

Published in print:
2012
Published Online:
September 2012
ISBN:
9780199644162
eISBN:
9780199949984
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199644162.003.0005
Subject:
Literature, European Literature

Cross-dressing in women’s travel writing of the nineteenth and twentieth centuries can be seen as a carnivalesque affair, featuring bearded ladies and flamboyant Queens. Using the performative gender ... More


MOBILITY IN SEMICONDUCTORS

J. M. Ziman

in Electrons and Phonons: The Theory of Transport Phenomena in Solids

Published in print:
2001
Published Online:
September 2007
ISBN:
9780198507796
eISBN:
9780191709937
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198507796.003.0010
Subject:
Physics, Condensed Matter Physics / Materials

This chapter considers the transport properties of charge carriers in semiconductors and near-insulators. That is, it discusses in detail the mobility and thermopower associated with a given density ... More


MULTIPHOTON EXCITATION

S. D. Ganichev and W. Prettl

in Intense Terahertz Excitation of Semiconductors

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198528302
eISBN:
9780191713637
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198528302.003.0004
Subject:
Physics, Condensed Matter Physics / Materials

This chapter is concerned with multiphoton transitions in the perturbative limit and beyond, resulting in fully developed nonlinearity where quantum interference effects control the absorption of ... More


TERAHERTZ RADIATION INDUCED CURRENTS

S. D. Ganichev and W. Prettl

in Intense Terahertz Excitation of Semiconductors

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198528302
eISBN:
9780191713637
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198528302.003.0008
Subject:
Physics, Condensed Matter Physics / Materials

This chapter focuses on photoelectric phenomena. It describes a large number of mechanisms causing photocurrents like the photon drag effect, the linear and the circular photogalvanic effect, the ... More


ELECTRONIC CONDUCTION IN METALS

J. M. Ziman

in Electrons and Phonons: The Theory of Transport Phenomena in Solids

Published in print:
2001
Published Online:
September 2007
ISBN:
9780198507796
eISBN:
9780191709937
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198507796.003.0009
Subject:
Physics, Condensed Matter Physics / Materials

This chapter discusses the electrical conductivity of metals. Topics covered include the transport properties of metals, residual resistance in alloys, the resistance-minimum phenomenon, residual ... More


Just Add Performance: Staging Schizophonia

Kiri Miller

in Playing Along: Digital Games, YouTube, and Virtual Performance

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199753451
eISBN:
9780199932979
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199753451.003.0004
Subject:
Music, History, American, Ethnomusicology, World Music

This chapter addresses public gameplay performance contexts for Guitar Hero and Rock Band. What does it mean to be a live performer of a pre-recorded song? These games inspire physically virtuosic, ... More


Variations on a Riefler bob shape

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0012
Subject:
Physics, History of Physics

Riefler's bob shape consists of two truncated cones, back-to-back. It is a shape with low air drag, and works well inside the clock case, where front-to-back space is frequently limited. A 1988 study ... More


Pendulum air movement: A second try

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0029
Subject:
Physics, History of Physics

Air drag is the biggest energy loss in a pendulum. The bob generates most of the air drag because of its large size and its location at the end of the pendulum rod. In this chapter, the movement of ... More


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