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<h2 class="hd hd-2 unit-title">Welcome</h2>
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<h2>WELCOME TO 3.15.3X: Magnetic Materials and Devices</h2>
<p style="font-size: 16px;">Welcome to <em>3.15.3x: Magnetic Materials and Devices. </em>Before you get started with the course, we recommend that you review all of the material in the <em>Introduction</em> section. This section contains important information about the structure of the course, and details about the types of exercises that you will encounter throughout 3.15.3x. </p>
<p style="font-size: 16px;">We look forward to working with you throughout the semester!</p>
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<h2 class="hd hd-2 unit-title">Overview</h2>
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<h2>overview</h2>
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<p style="margin: 0px 0px 1em; line-height: 1.5em; box-sizing: border-box;">In this engineering course, you will learn about magnetic materials and devices. Applications presented include magnetic data storage, motors, transformers, and spintronics.</p>
<p style="margin: 0px 0px 1em; line-height: 1.5em; box-sizing: border-box;">This course is part of a three-part series, which explains the basis of electrical, optical, and magnetic properties of materials including semiconductors, metals, organics, and insulators. We will show how devices are built to take advantage of these properties. This is illustrated with a wide range of devices, placing a strong emphasis on new and emerging technologies.</p>
<p style="margin: 0px 0px 1em; line-height: 1.5em; box-sizing: border-box;">Part 1 - <a href="https://www.edx.org/course/electronic-materials-devices-mitx-3-15-1x" target="_blank" style="color: rgb(41, 104, 170); text-decoration: none; box-sizing: border-box;">3.15.1x: Electronic Materials and Devices</a><br style="box-sizing: border-box;" />Part 2 - <a href="https://www.edx.org/course/optical-materials-devices-mitx-3-15-2x" target="_blank" style="color: rgb(41, 104, 170); text-decoration: none; box-sizing: border-box;">3.15.2x: Optical Materials and Devices</a></p>
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<p class="see-more-cta" aria-hidden="true" style="margin: 0px; line-height: 1.5em; box-sizing: border-box;"><a href="https://www.edx.org/course/magnetic-materials-devices-mitx-3-15-3x#!" class="see-more-reveal" style="color: rgb(41, 104, 170); text-decoration: none; box-sizing: border-box;"><span class="see-more-label" style="box-sizing: border-box; display: inline;"><span class="is-visually-hidden" style="color: transparent; left: -999999px; position: absolute; box-sizing: border-box;">about Magnetic Materials and Devices</span></span></a></p>
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<h3 class="course-info-heading" style="font-size: 1.25em; line-height: 1.5em; margin: 0px; padding: 0px; color: rgb(5, 5, 5); font-weight: bold; box-sizing: border-box; border-bottom-width: 0px; display: inline-block;">What you'll learn</h3>
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<ul style="margin-top: 0px; margin-bottom: 20px; padding-top: 12px; padding-bottom: 12px; padding-left: 16px; box-sizing: border-box;">
<li style="font-size: 1em !important; line-height: 1.5em; margin-bottom: 5px; box-sizing: border-box;">Fundamentals of magnetism</li>
<li style="font-size: 1em !important; line-height: 1.5em; margin-bottom: 5px; box-sizing: border-box;">The role anisotropy plays in the magnetic behavior of materials</li>
<li style="font-size: 1em !important; line-height: 1.5em; margin-bottom: 5px; box-sizing: border-box;">The operating principles of transformers and DC motors</li>
<li style="font-size: 1em !important; line-height: 1.5em; margin-bottom: 5px; box-sizing: border-box;">How data is stored on hard disks</li>
<li style="font-size: 1em !important; line-height: 1.5em; margin-bottom: 5px; box-sizing: border-box;">Principles of optical and magnetooptical storage</li>
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<h2 class="hd hd-2 unit-title">Grading</h2>
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<h2 style="font-size: 16px;">Grading</h2>
<p style="text-rendering: optimizelegibility; margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; outline: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif; vertical-align: baseline; color: #313131;">Homework: 100% </p>
<p style="text-rendering: optimizelegibility; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; outline: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; font-size: 16px; font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif; vertical-align: baseline; color: #313131;">You can track your progress through the course by clicking on the Progress Bar at the top of the screen. </p>
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<h2 class="hd hd-2 unit-title">Schedule</h2>
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<h2>COURSE SCHEDULE</h2>
<p style="font-size: 18px;">The schedule of due dates for 3.15.3x can be found below. </p>
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<tbody>
<tr><th></th><th>Topic</th><th>Released</th><th>Due</th></tr>
<tr>
<td>Week 1</td>
<td>Magnetic Fundamentals and Anisotropy</td>
<td>16 August</td>
<td>23 August</td>
</tr>
<tr>
<td>Week 2</td>
<td>Hard and Soft Magnetic Materials and Data Storage on Hard Disks, Part 1</td>
<td>23 August</td>
<td>30 August</td>
</tr>
<tr>
<td>Week 3</td>
<td>Data Storage on Hard Disks, Part 2 and Optical and Magnetooptical Storage</td>
<td>30 August</td>
<td>06 September </td>
</tr>
</tbody>
</table>
<p><span style="text-decoration: underline;">Please note:</span> All assignments are released at 9am EST and are due at 9am EST the next week.</p>
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<h2 class="hd hd-2 unit-title">Problem Types</h2>
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<h2>PROBLEM TYPES</h2>
<p style="font-size: 16px;">Throughout 3.15x, you will encounter several types of problems. This unit outlines the types of problems that you will find, and it provides a brief tutorial that guides you through the various ways that you can enter your answers into the edX platform. Please review this material before attempting any Homework or Exam problems. </p>
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problem
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<p>Many of the problems that you encounter will require a simple numerical answer. Try typing "3.14" into the box below.</p>
<p>What is the value of pi (to two decimal places)?</p>
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<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="False">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
<div class="vert vert-2" data-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@16b3cb7db28e44c696161a662f22a48d">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-runtime-class="LmsRuntime" data-has-score="True" data-request-token="0e5fc8badb8811efb67f16ffdd51317f" data-runtime-version="1" data-graded="False" data-init="XBlockToXModuleShim" data-block-type="problem" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@16b3cb7db28e44c696161a662f22a48d">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
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<div id="problem_16b3cb7db28e44c696161a662f22a48d" class="problems-wrapper" role="group"
aria-labelledby="16b3cb7db28e44c696161a662f22a48d-problem-title"
data-problem-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@16b3cb7db28e44c696161a662f22a48d" data-url="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@problem+block@16b3cb7db28e44c696161a662f22a48d/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="16b3cb7db28e44c696161a662f22a48d-problem-title" aria-describedby="block-v1:MITx+3.15.3x+2T2017+type@problem+block@16b3cb7db28e44c696161a662f22a48d-problem-progress" tabindex="-1">
problem
</h3>
<div class="problem-progress" id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@16b3cb7db28e44c696161a662f22a48d-problem-progress"></div>
<div class="problem">
<div>
<p>You can also answer problems using scientific notation. Try entering \(3 \times 10^8\) by typing "3*10^8" into the box below:</p>
<p>What is the speed of light (in m/s)?</p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div id="formulaequationinput_16b3cb7db28e44c696161a662f22a48d_2_1" class="inputtype formulaequationinput">
<div class="unanswered">
<input type="text" name="input_16b3cb7db28e44c696161a662f22a48d_2_1" id="input_16b3cb7db28e44c696161a662f22a48d_2_1" data-input-id="16b3cb7db28e44c696161a662f22a48d_2_1" value="" aria-describedby="status_16b3cb7db28e44c696161a662f22a48d_2_1" size="20"/>
<span class="trailing_text" id="trailing_text_16b3cb7db28e44c696161a662f22a48d_2_1"/>
<span class="status unanswered" id="status_16b3cb7db28e44c696161a662f22a48d_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_16b3cb7db28e44c696161a662f22a48d_2_1" class="answer"/>
<div id="input_16b3cb7db28e44c696161a662f22a48d_2_1_preview" class="equation">
\(\)
<img src="/static/images/spinner.bc34f953403f.gif" class="loading" alt="Loading"/>
</div>
</div>
<div class="script_placeholder" data-src="/static/js/capa/src/formula_equation_preview.b1967ab28c31.js"/>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="problem" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_16b3cb7db28e44c696161a662f22a48d" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_16b3cb7db28e44c696161a662f22a48d">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
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is-hidden"
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<span class="icon fa fa-save" aria-hidden="true"></span>
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<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
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<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="16b3cb7db28e44c696161a662f22a48d-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
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"
data-graded="False">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
<div class="vert vert-3" data-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@14b837be768948e2a793851dec3c8486">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-runtime-class="LmsRuntime" data-has-score="True" data-request-token="0e5fc8badb8811efb67f16ffdd51317f" data-runtime-version="1" data-graded="False" data-init="XBlockToXModuleShim" data-block-type="problem" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@14b837be768948e2a793851dec3c8486">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
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<div id="problem_14b837be768948e2a793851dec3c8486" class="problems-wrapper" role="group"
aria-labelledby="14b837be768948e2a793851dec3c8486-problem-title"
data-problem-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@14b837be768948e2a793851dec3c8486" data-url="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@problem+block@14b837be768948e2a793851dec3c8486/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="14b837be768948e2a793851dec3c8486-problem-title" aria-describedby="block-v1:MITx+3.15.3x+2T2017+type@problem+block@14b837be768948e2a793851dec3c8486-problem-progress" tabindex="-1">
problem
</h3>
<div class="problem-progress" id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@14b837be768948e2a793851dec3c8486-problem-progress"></div>
<div class="problem">
<div>
<p>Some problems don't have numerical answers at all. Instead, you can enter a formula into the answer box. (Please note that when you enter a formula, you always need to explicitly denote multiplication using the "*" sign.) Try entering \(ma\) by typing "m*a" into the box below:</p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><br/>
<span>Force =</span>
<div id="formulaequationinput_14b837be768948e2a793851dec3c8486_2_1" class="inputtype formulaequationinput">
<div class="unanswered">
<input type="text" name="input_14b837be768948e2a793851dec3c8486_2_1" id="input_14b837be768948e2a793851dec3c8486_2_1" data-input-id="14b837be768948e2a793851dec3c8486_2_1" value="" aria-describedby="status_14b837be768948e2a793851dec3c8486_2_1" size="40"/>
<span class="trailing_text" id="trailing_text_14b837be768948e2a793851dec3c8486_2_1"/>
<span class="status unanswered" id="status_14b837be768948e2a793851dec3c8486_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_14b837be768948e2a793851dec3c8486_2_1" class="answer"/>
<div id="input_14b837be768948e2a793851dec3c8486_2_1_preview" class="equation">
\(\)
<img src="/static/images/spinner.bc34f953403f.gif" class="loading" alt="Loading"/>
</div>
</div>
<div class="script_placeholder" data-src="/static/js/capa/src/formula_equation_preview.b1967ab28c31.js"/>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="problem" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_14b837be768948e2a793851dec3c8486" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_14b837be768948e2a793851dec3c8486">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
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is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
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</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
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<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="14b837be768948e2a793851dec3c8486-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
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"
data-graded="False">
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<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
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</div>
<div class="vert vert-4" data-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@b84195461a9445318ec9440042cf2859">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-runtime-class="LmsRuntime" data-has-score="True" data-request-token="0e5fc8badb8811efb67f16ffdd51317f" data-runtime-version="1" data-graded="False" data-init="XBlockToXModuleShim" data-block-type="problem" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@b84195461a9445318ec9440042cf2859">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
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<div id="problem_b84195461a9445318ec9440042cf2859" class="problems-wrapper" role="group"
aria-labelledby="b84195461a9445318ec9440042cf2859-problem-title"
data-problem-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@b84195461a9445318ec9440042cf2859" data-url="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@problem+block@b84195461a9445318ec9440042cf2859/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="b84195461a9445318ec9440042cf2859-problem-title" aria-describedby="block-v1:MITx+3.15.3x+2T2017+type@problem+block@b84195461a9445318ec9440042cf2859-problem-progress" tabindex="-1">
problem
</h3>
<div class="problem-progress" id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@b84195461a9445318ec9440042cf2859-problem-progress"></div>
<div class="problem">
<div>
<p>You can also include Greek letters in your answer. To create the symbol \(\Delta\), simply type "Delta" </p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><br/>
<span>\(\Delta\):</span>
<div id="formulaequationinput_b84195461a9445318ec9440042cf2859_2_1" class="inputtype formulaequationinput">
<div class="unanswered">
<input type="text" name="input_b84195461a9445318ec9440042cf2859_2_1" id="input_b84195461a9445318ec9440042cf2859_2_1" data-input-id="b84195461a9445318ec9440042cf2859_2_1" value="" aria-describedby="status_b84195461a9445318ec9440042cf2859_2_1" size="40"/>
<span class="trailing_text" id="trailing_text_b84195461a9445318ec9440042cf2859_2_1"/>
<span class="status unanswered" id="status_b84195461a9445318ec9440042cf2859_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_b84195461a9445318ec9440042cf2859_2_1" class="answer"/>
<div id="input_b84195461a9445318ec9440042cf2859_2_1_preview" class="equation">
\(\)
<img src="/static/images/spinner.bc34f953403f.gif" class="loading" alt="Loading"/>
</div>
</div>
<div class="script_placeholder" data-src="/static/js/capa/src/formula_equation_preview.b1967ab28c31.js"/>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="problem" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_b84195461a9445318ec9440042cf2859" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_b84195461a9445318ec9440042cf2859">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
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is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
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<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="b84195461a9445318ec9440042cf2859-problem-title">Answers are displayed within the problem
</span>
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data-graded="False">
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<span class="sr">Loading…</span>
</p>
</div>
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</div>
<div class="vert vert-5" data-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@6cc5f93b395a4eaf9df685766c5b5180">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-runtime-class="LmsRuntime" data-has-score="True" data-request-token="0e5fc8badb8811efb67f16ffdd51317f" data-runtime-version="1" data-graded="False" data-init="XBlockToXModuleShim" data-block-type="problem" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@6cc5f93b395a4eaf9df685766c5b5180">
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{"xmodule-type": "Problem"}
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<div id="problem_6cc5f93b395a4eaf9df685766c5b5180" class="problems-wrapper" role="group"
aria-labelledby="6cc5f93b395a4eaf9df685766c5b5180-problem-title"
data-problem-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@6cc5f93b395a4eaf9df685766c5b5180" data-url="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@problem+block@6cc5f93b395a4eaf9df685766c5b5180/handler/xmodule_handler"
data-problem-score="0"
data-problem-total-possible="0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="6cc5f93b395a4eaf9df685766c5b5180-problem-title" aria-describedby="block-v1:MITx+3.15.3x+2T2017+type@problem+block@6cc5f93b395a4eaf9df685766c5b5180-problem-progress" tabindex="-1">
problem
</h3>
<div class="problem-progress" id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@6cc5f93b395a4eaf9df685766c5b5180-problem-progress"></div>
<div class="problem">
<div>
<p>You can type lowercase Greek letters as well by spelling the letter name with a lowercase letter. If you would like a lowercase delta, type "delta" </p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><br/>
<span>\(\delta\):</span>
<div id="formulaequationinput_6cc5f93b395a4eaf9df685766c5b5180_2_1" class="inputtype formulaequationinput">
<div class="unanswered">
<input type="text" name="input_6cc5f93b395a4eaf9df685766c5b5180_2_1" id="input_6cc5f93b395a4eaf9df685766c5b5180_2_1" data-input-id="6cc5f93b395a4eaf9df685766c5b5180_2_1" value="" aria-describedby="status_6cc5f93b395a4eaf9df685766c5b5180_2_1" size="40"/>
<span class="trailing_text" id="trailing_text_6cc5f93b395a4eaf9df685766c5b5180_2_1"/>
<span class="status unanswered" id="status_6cc5f93b395a4eaf9df685766c5b5180_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_6cc5f93b395a4eaf9df685766c5b5180_2_1" class="answer"/>
<div id="input_6cc5f93b395a4eaf9df685766c5b5180_2_1_preview" class="equation">
\(\)
<img src="/static/images/spinner.bc34f953403f.gif" class="loading" alt="Loading"/>
</div>
</div>
<div class="script_placeholder" data-src="/static/js/capa/src/formula_equation_preview.b1967ab28c31.js"/>
</div></div>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="problem" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_6cc5f93b395a4eaf9df685766c5b5180" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_6cc5f93b395a4eaf9df685766c5b5180">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
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is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="6cc5f93b395a4eaf9df685766c5b5180-problem-title">
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"
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<p>You can also include square root signs in your equations. Try entering \(2 \pi \sqrt{\frac{L}{g}}\) by typing "2*pi*sqrt(L/g)" into the box below.</p>
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<p>You can also include exponentials and subscripts in your answer. Try entering \(N_0 e^{-\lambda t}\) by typing "N_0*exp(-lambda*t)" into the box below.</p>
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<h2 class="hd hd-2 unit-title">Readings</h2>
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<h2>readings</h2>
<p>There is no required textbook and there are no required readings for 3.15x. However, if you would like further references, Prof. Ross has complied a list of books that will be useful in deepening your understanding of the 3.15x material. You will find a list of these textbooks below, and each week's Week Overview will contain a list of relevant selections from these books: </p>
<ul>
<li><span style="font-size: 1em; line-height: 1.6em;">Pierret, <em>Semiconductor Device Fundamentals</em>, Addison-Wesley 1996</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Anderson & Anderson, <em>Fundamentals of Semiconductor Devices</em>, 2004</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Solymar and Walsh, <em>Electrical Properties of Materials</em>, Oxford 7th Ed. 2003</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Braithwaite and Weaver, <em>Electronic Materials</em>, 2nd ed. Butterworths, 1998</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Saleh and Teich, <em>Fundamentals of Photonics</em>, 2nd ed. Wiley 2007</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;"> <span style="font-size: 1em; line-height: 1.6em;">Joannopoulos</span>, et al, <a href="http://ab-initio.mit.edu/book/" target="[object Object]">Photonic Crystals</a>, Princeton 1995</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Jiles, <em>Introduction to Magnetism and Magnetic Materials</em>, 2nd ed., Chapman & Hall 1998</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Spaldin, <em>Magnetic Materials</em>, Cambridge Univ. Press, 2003</span></li>
<li><span style="font-size: 1em; line-height: 1.6em;">Fulay, <em>Electronic, Magnetic and Optical Materials</em>, CRC Press, 2010</span></li>
</ul>
<p></p>
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