Magnetic particle inspection (MPI) - Is a non-destructive testing (NDT) process for detecting surface and slightly subsurface discontinuities in ferroelectric materials such as iron‚ nickel‚ cobalt‚ and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs
Free Magnetic field Magnetism Alternating current
References: Wikipedia.com Silvapages.com Mommsen‚ Wolfgang J. and Jurgen Osterhammel.(1986) Imperialism and After. Continuities and Discontinuities. London 1986 Owen‚ Roger‚ and Bob Stutcliffe.(1972) Studies In The Theory Of Imperialism. London.
Premium Africa Colonialism Europe
Chapter One Introduction to Geology "study of the Earth." Geology literally means Physical geology examines the materials and processes of the Earth. Historical geology examines the origin and evolution of our planet through time. • Geology is an evolving science - the theory of plate tectonics was just accepted in the 1960’s. • • . Geology seeks to understand the origin of our planet and our place in the Universe - answers to these questions are also posed outside of the realm
Premium Earth Plate tectonics
OBSERVING WAVE PULSES - EXPERIMENT 15 PART 1 - Transverse Wave Pulses Q1 - As the pulse travels down through the spring‚ its‚ size and amplitude is reduced - the sizes of the waves are much smaller as the forces become weaker (losing energy) as the distance from the point of initiation is increased. Q2 - Pulses do not ’catch up’ with one another in transverse waves. They either meet at a certain point momentarily or pass through each other and continue on their way as if nothing has happened.
Premium Wave
greater revenue and market share. "Kinked" demand curves are similar to traditional demand curves‚ as they are downward-sloping. They are distinguished by a hypothesized convex bend with a discontinuity at the bend–"kink". Thus the first derivative at that point is undefined and leads to a jump discontinuity in the marginal revenue curve. Classical economic theory assumes that a profit-maximizing producer with some market power (either due to oligopoly or monopolistic competition) will set marginal
Premium
Assignment #1 Evolution of new markets: US 19th c natural ice In the first two chapters of the book “The evolution of new markets”‚ Geroski endeavors to explain the formation of new markets by disruptive technologies‚ the source of these tech discontinuities‚ and the various factors and common patterns in the formation of these new markets. Understanding the process or idea of new market formation‚ Geroski explains‚ can help in understanding the future of existing/new markets. Geroski argues that
Premium Innovation Technology
seismologist Andrija Mohorovicic established that about 50 kilometers deep in the Earth there is a sudden change in seismic velocity—a discontinuity of some sort. Seismic waves bounce off it (reflect) and bend (refract) as they go through it‚ the same way that light behaves at the discontinuity between water and air. That discontinuity‚ named the Mohorovicic discontinuity or "Moho‚" is the accepted boundary between the crust and mantle. Crusts and Plates The crust is not the same thing as the plates
Premium Plate tectonics Earth Basalt
GUIDE TO CRITICAL ESSAYS ON SILAS MARNER: 1. 1. SILAS MARNER: A STUDY IN TRANSITION by Shirley Galloway Writer’s thesis: * The story is not a fantasy but a serious work * Main issues are class ( Eliot refutes the common belief that the upper classes are superior) industrialization ( she argues that industrialization dehumanizes and alienates workers) and religion ( she suggests a ‘religion of humanity’ as substitute for failure of organized religion). * The issues are realistically
Premium Religion Faith
Discuss the implications of the quality of attention that is formed in infancy for relationships beyond infancy Secure and Insecure Attachment We discover who we are through having intimate relationships with others. We learn how others feel about life and find out how to accept our differences. The emotional security and warmth derived from an initial close relationship with a loving parent provides us with a "home base" from which we can venture to take the risks that are inevitably part of
Premium Attachment theory Developmental psychology Psychology
NOKIA MOBILE PHONES STREAMLINGING LOGISTICAL TO CREATE VALUES Nokia was founded in 1865 in Nokia Finland as a timber and paper company. One could say Nokia from the beginning was a communication company. On the turn of the century the company started producing rubber. It was not until the 1960s when Nokia started the electronic venture. It was only in 1987 that with their major acquisition they brought the venture into reality and entered the electronic competition. With a rapid growth Nokia
Premium Mobile phone Nokia