A circular coil consisting of a number of turns of wire wrapped around a ferrite core, is an example of a simple electromagnetic system. Passing current through the coil causes a circular magnetic flux to be generated within the toroidal core, the direction of which may be predicted using the right hand corkscrew rule or the right hand grip rule. Calculate the magnetic field strength H in a circular coil of mean radius 4 cm, wrapped with 200 turns of wire, if the current flowing through the coil is 0.1 A. For a given coil, the magnetic field strength is directly proportional to the linear current density. Also see ampere , current , magnetic field , meter , and International System of Units ( SI ). Smart grid - Terms related to smart grids, including definitions about utility electricity delivery systems and words and phrases about smart meters and distributing, monitoring and billing electrical power. A honeypot is a computer system that is set up to act as a decoy to lure cyberattacks and to detect, deflect, or study attempts to gain unauthorized access to information systems. Secure Shell (SSH) is a network protocol that secures data communications between computers on an insecure network using strong authentication and encryption.
Windows Wi-Fi Sense allows Windows 10 users to get Internet access from public hotspots and private wireless local area networks (WLANs) that have been shared by friends. Leaf-spine is a two-layer network topology composed of leaf switches (to which servers and storage connect) and spine switches (to which leaf switches connect). A data center administrator monitors systems, installs equipment and cabling, and participates in change processes and everyday procedures that support information technology.
Load shedding is a reduction of power demand by a utility provider during peak or stressed times.
Emotional intelligence (EI) is the area of cognitive ability that facilitates interpersonal behavior. A platform business model is a plan for creating revenue by allowing registered members to create content that can be consumed by a specific user group or general audience.
The Business Continuity Institute, which was started in 1994 and is headquartered out of the United Kingdom, is an international organization that offers accreditation and certification, networking, published resources, training and guidance for business continuity professionals. The Federal Financial Institutions Examination Council developed the Cybersecurity Assessment Tool to help organizations identify cybersecurity risks and determine their level of preparedness.
An emergency communications plan (EC plan) provides guidelines, contact information and procedures for how information should be shared should a crisis that requires immediate action occur.
AWS GovCloud is an isolated data center region of the Amazon Web Services (AWS) cloud designed to meet strict compliance requirements as defined by the U.S. An Amazon Resource Name (ARN) is a file naming convention used to identify a particular resource in the Amazon Web Services (AWS) public cloud. Amazon Virtual Private Cloud (Amazon VPC) allows a developer to create a virtual network for resources in an isolated section of the Amazon Web Services cloud. The Salesforce Customer Success Platform is the official name of the Salesforce portfolio of products.
Aura is a user interface framework for developing dynamic Web apps for mobile and desktop devices. The Salesforce Service Console is the centralized interface in the Salesforce Service Cloud with which agents can view all relevant customer information related to a case, as well as their call queue and more.
Cost of goods sold (COGS) is the total of the costs directly attributable to producing goods.
Reference checking software is programming that automates the process of contacting and questioning the references of job applicants.The entire process occurs on the Internet and may be used independently or integrated with an applicant tracking system. Zuora sells software that helps companies manage their cloud subscriptions, including sales, pricing, billing, collection and renewal. Contact center as a service combines the principles of contact center hosting and cloud-based contact center infrastructure. A buyer persona is a composite representation of the attributes and demographics of a segment of a company's target customers.


The SAP Customer Engagement and Commerce (SAP CEC) suite is a collection of cloud-based applications that provide tools for CRM, marketing, sales and analytics, e-commerce and more. Creationists and scientists have been debating for years about the age of the Earth and the universe. Humphreys does, however, outline his theory of constant magnetic field decay, the dynamic-decay theory.
Based upon his assumptions that the energy of the magnetic field has been in a state of constant decay, and taking into account his theory that the Flood caused an accelerated rate of decay that led to a massive energy drop over a relatively short period of time, Humphreys concludes that the earth must only be about 6,000 years old (Humphreys 1993). The scientific community has been quick to respond to the age data presented by creationists, and they have provided several counters to the claims of Barnes. It is evident that the debate between creationists and scientists will continue for some time, as both sides are bent on proving themselves right. Comparing the maps in Figures 2 and 3 reveals some interesting behavior of the magnetic field. However, this is not a strict rule, as there are features in the Pacific which are moving eastward. Using these time derivatives, the core field can be predicted for the upcoming couple of years. We glossed over the idea that the outer core of the Earth creates the magnetic field and the magnetosphere for the planet.
The mean length of the magnetic path (l) is taken to be path through the centre of the circular ring, as shown at the left in the above illustration. It is derived from basic standard units, but is expressed directly in base units and cannot be further reduced.
Suppose that the linear current density in this coil is 1 ampere per meter of displacement as measured along the coil axis. SSH also refers to the utility suite that implements the protocol, and which can be used to enable terminal sessions, file transfers and remote command execution.
Although Wi-Fi Sense is enabled by default in all editions of Windows 10, the feature can be turned off by users and access can be disabled by wireless network administrators. Leaf switches mesh into the spine, forming the access layer that delivers network connection points for servers. Participants voluntarily reduce demand for utility power and rely on secondary sources for uninterrupted operation, or lower or lose power supply in an involuntary load shedding event.
Innovation managers are skilled in unleashing individual and collective creativity and in implementing structures that help shepherd an innovation from idea stage to fruition. It includes material and labor costs but not indirect costs such as sales, marketing and distribution. Zuora also offers analytics software that tracks information on subscribers and offers ways to boost services or react to problems.
It enables companies to pay for only the infrastructure they need, and to have a provider manage assets for them. In this debate, the apparent decay of the Earth's magnetic field has been used by young-Earth creationists as evidence that the world is only thousands of years old, while scientists maintain that the cyclic nature of the magnetic field renders any age produced by magnetic field decay theory to be invalid.
Barnes, observed scientific evidence has shown that Earth's magnetic field has not been decaying constantly since the dawn of creation.
According to this theory, Earth's magnetic field has been constantly losing about half its energy every 700 years (Humphreys 1993).
Any flaws found in Barnes' work also discredit the work of Humphreys, since Humphreys' work is based upon that of Barnes.
The general tendency of magnetic field features to move westward is called the westward drift. In accounting, it is a standard item in the expense section of a company's income statement. Careful analysis of both the creationist's and scientist's theories can provide a clearer picture of who is correct in this long-running debate.


In fact, the magnetic field has fluctuated and reversed in polarity over time, proven by evidence of periods of increasing and decreasing field energy (Sarfati 1998). Humphreys himself provides no scientific answers to this specific question, instead focusing on his data and theories relating to the time of the Flood, which he denotes as the third millennium before Christ (Humphreys 1993). Using assumptions that he himself has made about the maximum energy [it is important to note that energy is not the same concept as intensity] of the magnetic field at the time of creation, Humphreys produces the following figure, which shows an age vs. The first point made by scientists is that Barnes used an outdated model in his analysis of the Earth's interior (Matson 2002).
Barnes asserted that Earth's magnetic field has been decaying in a non-cyclic manner at an exponential rate since the beginning of creation (Matson 2002). Due to this cyclic fluctuation, scientists have argued that the strength of the magnetic field cannot be used to determine an age for the earth, since it is a reversible, cyclic process (Stassin 2005).
Elsasser, Earth's magnetic field is generated by a dynamo within the Earth's core (Matson 2002).
If they are to prove that Earth is indeed only thousands of years old, they will need to analyze the fluctuations of the magnetic field from a new perspective.
If you take a physics course, you'll learn that magnetism and electricity are very closely related. Barnes used the data of McDonald and Gunst to plot an exponential curve and, by extrapolating the observed data backward into time using his exponential decay equation, Barnes claimed that the magnetic field was approximately 40 percent stronger in 1000 A.D. Second, by using McDonald's and Gunst's data, Barnes only analyzed the dipole component of the magnetic field, which is not an accurate measurement of the overall strength of the Earth's magnetic field (Matson 2002). This dynamo is driven by an unknown energy source, but the subsequent fluid movement within the core generates the magnetic field around the Earth (Matson 2002). Likewise, scientists will need to continue their research of the dynamo model until the mysterious energy source is identified. Third, scientists show that the data used by Barnes more easily fits a linear curve than an exponential one, and Barnes chose an exponential curve based on incorrect assumptions (Thompson 1997). Creationists are quick to call this theory into question, because they see the fact that the energy source of the dynamo is unknown as evidence that the theory may be incorrect. If they can discern the source, they will move one step closer to verifying their model; if they cannot identify it, they will need to turn to other models for answers. Continuing this extrapolation, Barnes stated that the Earth must not be older than 10,000 years, or else the strength of the magnetic field would have been so large that it would have melted the Earth (Sarfati 1998). Russell Humphreys, a nuclear physicist, looks to the Genesis flood as the cause of the fluctuations in the magnetic field. The answers for both parties lie in continued research - only then will we be able to determine if we are able to date the Earth using its magnetic field as a clock. The magnetic field created in the center of the planet makes your compass point north and protects the Earth from solar winds. Utilizing a creationist theory that the Genesis Flood was caused by the plunging of tectonic plates toward the Earth's core, Dr. Humphreys claims that the tectonic plates would have caused a sudden cooling of the outer parts of the Earth's core (Sarfati 1998). This sudden cooling would cause convection currents to flow within the core, which would generate numerous reversals of the magnetic field over the course of thousands of years (Humphreys 1993). These field reversals would have happened rapidly at the time of the Flood, according to Humphreys, leading to an increase in the intensity (strength and direction) of the magnetic field until it reached a maximum at the time of Jesus Christ. 1 below, Humphreys believes the intensity of the field has been decreasing since the time of Christ.



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Rubric: Electromagnetic Pulse Shield



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