StudentShare solutions
Triangle menu

Science project - Essay Example

Nobody downloaded yet

Extract of sample
Science project

To understand that, we first need to understand what makes such materials into magnets.
At the atomic level, materials that exhibit strong magnetic susceptibility have unpaired electrons in their electronic shells. These unpaired electrons all have a certain spin direction associated with them. Due to this spin, and the revolution of electrons around the nucleus, electrons generate their own magnetism. As all the electrons spin in the same direction for a certain nucleus, their magnetic field directions are also the same. So these magnetic fields add up and give the whole atom a net magnetic field (Mohammad et al., 2003; Rajendran, 2004).
When these atoms are subjected to a magnetic field, they align themselves with the applied magnetic field. When the magnetic field is removed, some of these atoms remain aligned with the magnetic field. These regions where the magnetic field of the atoms is aligned in the same direction are known as domains (Saleemi et al, 2002). For ferromagnetic materials, a net magnetic field is always present. The maximum magnetism that a ferromagnetic material may retain in the absence of an external magnetic field is known as its saturation magnetization. This is an important property which changes when we change the temperature of the magnetic material (Callister, 2007).
There is an important factor which dictates the ease with which atoms align with each other to form domains under the effect of an external magnetic field – the thermal agitation of the atoms. Atoms vibrate and have energy associated with their vibration. This vibration increases as the temperature of the material increases. As the atomic vibration/agitation increases, it becomes harder for these atoms to be forced to be aligned in a certain direction, and vice versa. So, if we apply the same amount of external energy through a ...Show more

Summary

It first explains magnetism on the atomic level, and describes what makes a material and magnet. After understanding this, the effect of temperature is described on the molecular…
Author : qschumm
Science project essay example
Read Text Preview
Save Your Time for More Important Things
Let us write or edit the essay on your topic
"Science project"
with a personal 20% discount.
Grab the best paper

Check these samples - they also fit your topic

Project Appraisal is Not an Exact Science. Critically Discuss Various Project Appraisal Techniques
They help in analyzing the project both quantitatively and qualitatively. The utilized approaches are both financial and non-financial. The financial techniques are such as discount and non-discount techniques whilst non-financial methods are such as check list model and multi weighted scoring models Table of Contents Abstract 1 Table of Contents 2 Introduction 3 Discounted Techniques 3 Net Present Value and Internal Rate of Return 3 Limitations of Net Present value and Internal Rate of Return 5 Non-discount Rates 5 Payback Period 5 Advantages of Payback Period 6 Limitations of Payback period 6 Accounting Rate of Return 7 Limitations of Accounting Rate of Return 7 Non-financial Models 7 Chec
8 pages (2000 words) Essay
Political science project
It is an organization that has a played a crucial role in the growth and development of developing countries. On the other hand, the World Bank is an international financial institution which gives loans and financial assistance to poor states. Debatably, the major aim of the World Bank and IMF is to reduce poverty and instill growth and development into the poor countries (Kumar, 2012).
8 pages (2000 words) Essay
UNIT 1 science Individual project
The first of the two was the former- the Industrial Revolution, taking place in the 18th century. This revolution started in Britain and in time spread throughout the world. It was, as defined and well
2 pages (500 words) Essay
Computer Science project reprot
[Johnson 2005] Background: Providing profile-based Web searching to users is an emerging concept and was first introduced by Eurekster in 2004. At that time it was biggest surprise that Google, Yahoo and Microsoft (MSN now Windows
10 pages (2500 words) Essay
Unit 5 Science Individual Project
As a member of the United Nations Delegates for Population Management, I feel that it is my responsibility to inform my colleagues about the present situation and offer some starting points for the future control of population. Towards this
2 pages (500 words) Essay
Science, Technology and the Military: The Manhattan Project
government would have mobilized the scientific, technical, and military resources devoted to the Manhattan Project. It is equally difficult to imagine circumstances other than the cold war that would have enabled US government to sustain its investment in nuclear energy into
13 pages (3250 words) Essay
Individual project 1 lab science
Fresh water exists either on the surface or under the earth’s surface and is the portion that is suitable for human use and economic development. Fresh water forms about 1% of the earth’s water resources (Jha, Arnold, Grassman, Giorgi, & Gu, 2006).
1 pages (250 words) Essay
Basic Rhetorical Analysis of Science Fair Project Booklet
It is the further assertion of this brief memo that the authors of the document produced by the Environmental Protection Agency did in fact achieve their goal
4 pages (1000 words) Essay
Science fair project
However, most studies explore the undesirable effects of video games on the person’s brain. This research analyzes the influences of computer games in improving individual’s memory. The record correctly identified words before and after playing the video game
2 pages (500 words) Essay
Natural Science, Choose 1 topic of 3 possible topics from the attached project outline
Population explosion on earth has become a contentious issues raising questions on the ability of the universe to sustain it in the future due to the many emerging
7 pages (1750 words) Essay
Hire a pro to write
a paper under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
YOUR PRIZE:
Apply my DISCOUNT
Comments (0)
Click to create a comment