<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@vertical+block@5253763a58554e6492fc85fc833bc4ff" data-graded="False" data-init="VerticalStudentView" data-has-score="False" data-block-type="vertical" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<h2 class="hd hd-2 unit-title">An Introduction and Magnetic Domains</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c" data-graded="False" data-init="XBlockToXModuleShim" data-has-score="False" data-block-type="video" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">An Introduction and Magnetic Domains</h3>
<div
id="video_8acd8ec6de3b46d7a94fe65a2c978e0c"
class="video closed"
data-metadata='{"sources": ["https://d2f1egay8yehza.cloudfront.net/MIT315XX/MIT315XXT115-V009300_DTH.mp4", "https://d2f1egay8yehza.cloudfront.net/MIT315XXT115-V009300/MIT315XXT115-V009300.m3u8"], "recordedYoutubeIsAvailable": true, "generalSpeed": 1.0, "showCaptions": "true", "duration": 580.0, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/b1a2352869c7459eaa14088bc3004602.jpeg?x-amz-security-token=IQoJb3JpZ2luX2VjEDUaCXVzLWVhc3QtMSJGMEQCIHVQbLVegTX7nJdVxAjxSyLbI8pzjB5m3rQp7gdrnb0VAiBWM8drEJo4uaTb3MT6Ta2HZhrVTJFoPVwvMCT%2BwQ3tkiq6BQhOEAQaDDg1OTIwNTYzNzQxMSIMKi1iEwbDNisTtcz4KpcFdJQ7%2FR96JWYj%2F1TPjk4tovtK5y2I3Uxw3Pa8iOGWdMnT0nV17VYKs%2FYcWggvo0qmMEF8DfV6piggnzyExAfzIUMBJCMEL3TrXgRSQwPGKj6BBDEbhrm06oZ81g04J3vXmCEjJSAVcx7WRXRDBRs0QJZa0rUYIdS1HWhr6wu40QuJCTXE4JkQXwiYc8tChjBB64ICFWloJKwkxKrRMSCKQfH05yirizP7AbvwsuMv4UyeSJHA9RvDac4tJ144eUsZ%2BaRuGYCWq6zc20wQDpJZkoTm3ZpXVlqp%2Fflv9BZ4iYIdadNsvJzGn3%2BqN0fh3MgcIvw2pJBP1qXlIVuqRZk7xik3LkXz1O1KYg%2FycTC8vk3wERV954nTQ%2FON9rVr6eop9nLbpVkR7zPyeEwHhKSUYmc04%2F3OmOgVxrgxuXjmxBi6fjayw2gdp%2FMcytNKjChEOAlWnNTzrZQ1nJeT46EDFejoW3s5ltplDnYTqXo7BU9FszyHgO2jR4BupOjQmHuurlXlD3FDtYw5v867TofmvQQQYHrDb9vMDm0hUOZOOViM210cW8GGzoKEDjmgPylOmooASnQqY9aSX%2Bmy1FIArkTZggxhlPT0EuiACVhBQTC0U1gBjbG%2BwwDA4%2BbIaS8D1%2BzUVRpAYJoJRQoEFlJuJD%2Fc9jbvWjF5jCtdmC%2FsRWtLMmJUNMBQpbOtfN2reXFjlDwaW975MdRySMgLdU4XkSUJHjvrODd9pao5MvgOyog9LzP%2F03RCWDhoKfwvNla2Ia%2FYm%2B4bfHCwwK1ynZL17%2BWsmySxtOEbtuzCRAM%2B3NHpmG6br6ClZ%2BYQdhNz686PZBa9PkAYVeZ0dHlX0Zu35Dt%2B2TNgCRB6IgPsTzc9aBMeq3nEn7o3MLnz2sMGOrIB%2FmJUa8ms7XP7luZuxUxBWPhQ%2FuZarbIaCrHtfnc6c3%2FfMHmTAu4J4UADH9bgrbrN3RS4w728ZPKsqKp2eo2ZPYXkwoF0XhkHYxpIK3EnwWS%2B6pAIN%2BbLVSH2G8LvZOfCB7JO0LZPDWaUEmGTZ65D2FKYb1ryucpUCbMgQZD%2BACBSOy6MS8yhUIzE9phciTRSa6URnPoYKCAwTsOVOjeQdgIvdmyufcB2%2FVPcNi1EJIgHug%3D%3D&Expires=1752613336&Signature=372krYST7j%2BsQR8MtKmBPMQheiE%3D&AWSAccessKeyId=ASIA4QDFFSUR3ECI52YB", "ytMetadataEndpoint": "", "ytTestTimeout": 1500, "transcriptLanguage": "en", "streams": "1.00:AgDumsTc-2Q", "ytApiUrl": "https://www.youtube.com/iframe_api", "transcriptTranslationUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c/handler/transcript/translation/__lang__", "captionDataDir": null, "prioritizeHls": false, "start": 0.0, "lmsRootURL": "https://openlearninglibrary.mit.edu", "publishCompletionUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c/handler/publish_completion", "completionEnabled": false, "saveStateEnabled": false, "speed": null, "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c/handler/transcript/available_translations", "savedVideoPosition": 0.0, "autoAdvance": false, "autoplay": false, "saveStateUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c/handler/xmodule_handler/save_user_state", "end": 0.0, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "completionPercentage": 0.95}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="8acd8ec6de3b46d7a94fe65a2c978e0c"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_8acd8ec6de3b46d7a94fe65a2c978e0c">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_8acd8ec6de3b46d7a94fe65a2c978e0c">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@8acd8ec6de3b46d7a94fe65a2c978e0c/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@vertical+block@8f8909fc61b3430598b0f20e8692d1db" data-graded="False" data-init="VerticalStudentView" data-has-score="False" data-block-type="vertical" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<h2 class="hd hd-2 unit-title">Magnetocrystalline Anisotropy</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@ed67b7403e4840cfb8e8d272c5dd19fc">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@ed67b7403e4840cfb8e8d272c5dd19fc" data-graded="False" data-init="XBlockToXModuleShim" data-has-score="False" data-block-type="video" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Magnetocrystalline Anisotropy</h3>
<div
id="video_ed67b7403e4840cfb8e8d272c5dd19fc"
class="video closed"
data-metadata='{"sources": ["https://d2f1egay8yehza.cloudfront.net/MIT315XX/MIT315XXT115-V008200_DTH.mp4", "https://d2f1egay8yehza.cloudfront.net/MIT315XXT115-V008200/MIT315XXT115-V008200.m3u8"], "recordedYoutubeIsAvailable": true, "generalSpeed": 1.0, "showCaptions": "true", "duration": 699.7, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/97713971cc3c4462a67e43f56c7f85ce.jpeg?x-amz-security-token=IQoJb3JpZ2luX2VjEDUaCXVzLWVhc3QtMSJGMEQCIHVQbLVegTX7nJdVxAjxSyLbI8pzjB5m3rQp7gdrnb0VAiBWM8drEJo4uaTb3MT6Ta2HZhrVTJFoPVwvMCT%2BwQ3tkiq6BQhOEAQaDDg1OTIwNTYzNzQxMSIMKi1iEwbDNisTtcz4KpcFdJQ7%2FR96JWYj%2F1TPjk4tovtK5y2I3Uxw3Pa8iOGWdMnT0nV17VYKs%2FYcWggvo0qmMEF8DfV6piggnzyExAfzIUMBJCMEL3TrXgRSQwPGKj6BBDEbhrm06oZ81g04J3vXmCEjJSAVcx7WRXRDBRs0QJZa0rUYIdS1HWhr6wu40QuJCTXE4JkQXwiYc8tChjBB64ICFWloJKwkxKrRMSCKQfH05yirizP7AbvwsuMv4UyeSJHA9RvDac4tJ144eUsZ%2BaRuGYCWq6zc20wQDpJZkoTm3ZpXVlqp%2Fflv9BZ4iYIdadNsvJzGn3%2BqN0fh3MgcIvw2pJBP1qXlIVuqRZk7xik3LkXz1O1KYg%2FycTC8vk3wERV954nTQ%2FON9rVr6eop9nLbpVkR7zPyeEwHhKSUYmc04%2F3OmOgVxrgxuXjmxBi6fjayw2gdp%2FMcytNKjChEOAlWnNTzrZQ1nJeT46EDFejoW3s5ltplDnYTqXo7BU9FszyHgO2jR4BupOjQmHuurlXlD3FDtYw5v867TofmvQQQYHrDb9vMDm0hUOZOOViM210cW8GGzoKEDjmgPylOmooASnQqY9aSX%2Bmy1FIArkTZggxhlPT0EuiACVhBQTC0U1gBjbG%2BwwDA4%2BbIaS8D1%2BzUVRpAYJoJRQoEFlJuJD%2Fc9jbvWjF5jCtdmC%2FsRWtLMmJUNMBQpbOtfN2reXFjlDwaW975MdRySMgLdU4XkSUJHjvrODd9pao5MvgOyog9LzP%2F03RCWDhoKfwvNla2Ia%2FYm%2B4bfHCwwK1ynZL17%2BWsmySxtOEbtuzCRAM%2B3NHpmG6br6ClZ%2BYQdhNz686PZBa9PkAYVeZ0dHlX0Zu35Dt%2B2TNgCRB6IgPsTzc9aBMeq3nEn7o3MLnz2sMGOrIB%2FmJUa8ms7XP7luZuxUxBWPhQ%2FuZarbIaCrHtfnc6c3%2FfMHmTAu4J4UADH9bgrbrN3RS4w728ZPKsqKp2eo2ZPYXkwoF0XhkHYxpIK3EnwWS%2B6pAIN%2BbLVSH2G8LvZOfCB7JO0LZPDWaUEmGTZ65D2FKYb1ryucpUCbMgQZD%2BACBSOy6MS8yhUIzE9phciTRSa6URnPoYKCAwTsOVOjeQdgIvdmyufcB2%2FVPcNi1EJIgHug%3D%3D&Expires=1752613337&Signature=eqeoBh1mN2gJnmIpAgTKnCHfOd4%3D&AWSAccessKeyId=ASIA4QDFFSUR3ECI52YB", "ytMetadataEndpoint": "", "ytTestTimeout": 1500, "transcriptLanguage": "en", "streams": "1.00:5B4F6kOB1PA", "ytApiUrl": "https://www.youtube.com/iframe_api", "transcriptTranslationUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@ed67b7403e4840cfb8e8d272c5dd19fc/handler/transcript/translation/__lang__", "captionDataDir": null, "prioritizeHls": false, "start": 0.0, "lmsRootURL": "https://openlearninglibrary.mit.edu", "publishCompletionUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@ed67b7403e4840cfb8e8d272c5dd19fc/handler/publish_completion", "completionEnabled": false, "saveStateEnabled": false, "speed": null, "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@ed67b7403e4840cfb8e8d272c5dd19fc/handler/transcript/available_translations", "savedVideoPosition": 0.0, "autoAdvance": false, "autoplay": false, "saveStateUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@ed67b7403e4840cfb8e8d272c5dd19fc/handler/xmodule_handler/save_user_state", "end": 0.0, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "completionPercentage": 0.95}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="ed67b7403e4840cfb8e8d272c5dd19fc"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@vertical+block@0929afb805574605ac6559c184d96d75" data-graded="False" data-init="VerticalStudentView" data-has-score="False" data-block-type="vertical" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<h2 class="hd hd-2 unit-title">Shape Anisotropy</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494" data-graded="False" data-init="XBlockToXModuleShim" data-has-score="False" data-block-type="video" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Shape Anisotropy</h3>
<div
id="video_49424dffea54474a82984ac6f5d93494"
class="video closed"
data-metadata='{"sources": ["https://d2f1egay8yehza.cloudfront.net/MIT315XX/MIT315XXT115-V008300_DTH.mp4", "https://d2f1egay8yehza.cloudfront.net/MIT315XXT115-V008300/MIT315XXT115-V008300.m3u8"], "recordedYoutubeIsAvailable": true, "generalSpeed": 1.0, "showCaptions": "true", "duration": 461.03, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/7d24167f4a4b46c8841eed100341bfa5.jpeg?x-amz-security-token=IQoJb3JpZ2luX2VjEDUaCXVzLWVhc3QtMSJGMEQCIHVQbLVegTX7nJdVxAjxSyLbI8pzjB5m3rQp7gdrnb0VAiBWM8drEJo4uaTb3MT6Ta2HZhrVTJFoPVwvMCT%2BwQ3tkiq6BQhOEAQaDDg1OTIwNTYzNzQxMSIMKi1iEwbDNisTtcz4KpcFdJQ7%2FR96JWYj%2F1TPjk4tovtK5y2I3Uxw3Pa8iOGWdMnT0nV17VYKs%2FYcWggvo0qmMEF8DfV6piggnzyExAfzIUMBJCMEL3TrXgRSQwPGKj6BBDEbhrm06oZ81g04J3vXmCEjJSAVcx7WRXRDBRs0QJZa0rUYIdS1HWhr6wu40QuJCTXE4JkQXwiYc8tChjBB64ICFWloJKwkxKrRMSCKQfH05yirizP7AbvwsuMv4UyeSJHA9RvDac4tJ144eUsZ%2BaRuGYCWq6zc20wQDpJZkoTm3ZpXVlqp%2Fflv9BZ4iYIdadNsvJzGn3%2BqN0fh3MgcIvw2pJBP1qXlIVuqRZk7xik3LkXz1O1KYg%2FycTC8vk3wERV954nTQ%2FON9rVr6eop9nLbpVkR7zPyeEwHhKSUYmc04%2F3OmOgVxrgxuXjmxBi6fjayw2gdp%2FMcytNKjChEOAlWnNTzrZQ1nJeT46EDFejoW3s5ltplDnYTqXo7BU9FszyHgO2jR4BupOjQmHuurlXlD3FDtYw5v867TofmvQQQYHrDb9vMDm0hUOZOOViM210cW8GGzoKEDjmgPylOmooASnQqY9aSX%2Bmy1FIArkTZggxhlPT0EuiACVhBQTC0U1gBjbG%2BwwDA4%2BbIaS8D1%2BzUVRpAYJoJRQoEFlJuJD%2Fc9jbvWjF5jCtdmC%2FsRWtLMmJUNMBQpbOtfN2reXFjlDwaW975MdRySMgLdU4XkSUJHjvrODd9pao5MvgOyog9LzP%2F03RCWDhoKfwvNla2Ia%2FYm%2B4bfHCwwK1ynZL17%2BWsmySxtOEbtuzCRAM%2B3NHpmG6br6ClZ%2BYQdhNz686PZBa9PkAYVeZ0dHlX0Zu35Dt%2B2TNgCRB6IgPsTzc9aBMeq3nEn7o3MLnz2sMGOrIB%2FmJUa8ms7XP7luZuxUxBWPhQ%2FuZarbIaCrHtfnc6c3%2FfMHmTAu4J4UADH9bgrbrN3RS4w728ZPKsqKp2eo2ZPYXkwoF0XhkHYxpIK3EnwWS%2B6pAIN%2BbLVSH2G8LvZOfCB7JO0LZPDWaUEmGTZ65D2FKYb1ryucpUCbMgQZD%2BACBSOy6MS8yhUIzE9phciTRSa6URnPoYKCAwTsOVOjeQdgIvdmyufcB2%2FVPcNi1EJIgHug%3D%3D&Expires=1752613337&Signature=YLOl9QFTt1UeSa%2Bgjy2FKtcZ7Ts%3D&AWSAccessKeyId=ASIA4QDFFSUR3ECI52YB", "ytMetadataEndpoint": "", "ytTestTimeout": 1500, "transcriptLanguage": "en", "streams": "1.00:21dYoac0KPs", "ytApiUrl": "https://www.youtube.com/iframe_api", "transcriptTranslationUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494/handler/transcript/translation/__lang__", "captionDataDir": null, "prioritizeHls": false, "start": 0.0, "lmsRootURL": "https://openlearninglibrary.mit.edu", "publishCompletionUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494/handler/publish_completion", "completionEnabled": false, "saveStateEnabled": false, "speed": null, "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494/handler/transcript/available_translations", "savedVideoPosition": 0.0, "autoAdvance": false, "autoplay": false, "saveStateUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494/handler/xmodule_handler/save_user_state", "end": 0.0, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "completionPercentage": 0.95}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="49424dffea54474a82984ac6f5d93494"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_49424dffea54474a82984ac6f5d93494">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_49424dffea54474a82984ac6f5d93494">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@49424dffea54474a82984ac6f5d93494/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@vertical+block@9cfb9aa096b8439f97cfe43ea8d18c43" data-graded="False" data-init="VerticalStudentView" data-has-score="False" data-block-type="vertical" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<h2 class="hd hd-2 unit-title">Domain Wall Energy</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0" data-graded="False" data-init="XBlockToXModuleShim" data-has-score="False" data-block-type="video" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">Domain Wall Energy</h3>
<div
id="video_af139a9a1cbe4974bcc047b809bc34d0"
class="video closed"
data-metadata='{"sources": ["https://d2f1egay8yehza.cloudfront.net/MIT315XX/MIT315XXT115-V008400_DTH.mp4", "https://d2f1egay8yehza.cloudfront.net/MIT315XXT115-V008400/MIT315XXT115-V008400.m3u8"], "recordedYoutubeIsAvailable": true, "generalSpeed": 1.0, "showCaptions": "true", "duration": 554.03, "poster": "https://mitx-edx-video-meta-storage.s3.amazonaws.com/media/video-images/e9becd036ff5482982cf87aeb85f1ce3.jpeg?x-amz-security-token=IQoJb3JpZ2luX2VjEDUaCXVzLWVhc3QtMSJGMEQCIHVQbLVegTX7nJdVxAjxSyLbI8pzjB5m3rQp7gdrnb0VAiBWM8drEJo4uaTb3MT6Ta2HZhrVTJFoPVwvMCT%2BwQ3tkiq6BQhOEAQaDDg1OTIwNTYzNzQxMSIMKi1iEwbDNisTtcz4KpcFdJQ7%2FR96JWYj%2F1TPjk4tovtK5y2I3Uxw3Pa8iOGWdMnT0nV17VYKs%2FYcWggvo0qmMEF8DfV6piggnzyExAfzIUMBJCMEL3TrXgRSQwPGKj6BBDEbhrm06oZ81g04J3vXmCEjJSAVcx7WRXRDBRs0QJZa0rUYIdS1HWhr6wu40QuJCTXE4JkQXwiYc8tChjBB64ICFWloJKwkxKrRMSCKQfH05yirizP7AbvwsuMv4UyeSJHA9RvDac4tJ144eUsZ%2BaRuGYCWq6zc20wQDpJZkoTm3ZpXVlqp%2Fflv9BZ4iYIdadNsvJzGn3%2BqN0fh3MgcIvw2pJBP1qXlIVuqRZk7xik3LkXz1O1KYg%2FycTC8vk3wERV954nTQ%2FON9rVr6eop9nLbpVkR7zPyeEwHhKSUYmc04%2F3OmOgVxrgxuXjmxBi6fjayw2gdp%2FMcytNKjChEOAlWnNTzrZQ1nJeT46EDFejoW3s5ltplDnYTqXo7BU9FszyHgO2jR4BupOjQmHuurlXlD3FDtYw5v867TofmvQQQYHrDb9vMDm0hUOZOOViM210cW8GGzoKEDjmgPylOmooASnQqY9aSX%2Bmy1FIArkTZggxhlPT0EuiACVhBQTC0U1gBjbG%2BwwDA4%2BbIaS8D1%2BzUVRpAYJoJRQoEFlJuJD%2Fc9jbvWjF5jCtdmC%2FsRWtLMmJUNMBQpbOtfN2reXFjlDwaW975MdRySMgLdU4XkSUJHjvrODd9pao5MvgOyog9LzP%2F03RCWDhoKfwvNla2Ia%2FYm%2B4bfHCwwK1ynZL17%2BWsmySxtOEbtuzCRAM%2B3NHpmG6br6ClZ%2BYQdhNz686PZBa9PkAYVeZ0dHlX0Zu35Dt%2B2TNgCRB6IgPsTzc9aBMeq3nEn7o3MLnz2sMGOrIB%2FmJUa8ms7XP7luZuxUxBWPhQ%2FuZarbIaCrHtfnc6c3%2FfMHmTAu4J4UADH9bgrbrN3RS4w728ZPKsqKp2eo2ZPYXkwoF0XhkHYxpIK3EnwWS%2B6pAIN%2BbLVSH2G8LvZOfCB7JO0LZPDWaUEmGTZ65D2FKYb1ryucpUCbMgQZD%2BACBSOy6MS8yhUIzE9phciTRSa6URnPoYKCAwTsOVOjeQdgIvdmyufcB2%2FVPcNi1EJIgHug%3D%3D&Expires=1752613337&Signature=ZIIad1cSl7XveibMXYAzzqPaok0%3D&AWSAccessKeyId=ASIA4QDFFSUR3ECI52YB", "ytMetadataEndpoint": "", "ytTestTimeout": 1500, "transcriptLanguage": "en", "streams": "1.00:JwQBWArMH9M", "ytApiUrl": "https://www.youtube.com/iframe_api", "transcriptTranslationUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0/handler/transcript/translation/__lang__", "captionDataDir": null, "prioritizeHls": false, "start": 0.0, "lmsRootURL": "https://openlearninglibrary.mit.edu", "publishCompletionUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0/handler/publish_completion", "completionEnabled": false, "saveStateEnabled": false, "speed": null, "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0/handler/transcript/available_translations", "savedVideoPosition": 0.0, "autoAdvance": false, "autoplay": false, "saveStateUrl": "/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0/handler/xmodule_handler/save_user_state", "end": 0.0, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "completionPercentage": 0.95}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="af139a9a1cbe4974bcc047b809bc34d0"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_af139a9a1cbe4974bcc047b809bc34d0">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_af139a9a1cbe4974bcc047b809bc34d0">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@video+block@af139a9a1cbe4974bcc047b809bc34d0/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@vertical+block@83a04abeaa7142749151d8aae17bed46" data-graded="False" data-init="VerticalStudentView" data-has-score="False" data-block-type="vertical" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<h2 class="hd hd-2 unit-title">In-Lecture Question 1.1</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@2689606130bd4e18bd0fccaf86f542bd">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-runtime-class="LmsRuntime" data-usage-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@2689606130bd4e18bd0fccaf86f542bd" data-graded="False" data-init="XBlockToXModuleShim" data-has-score="True" data-block-type="problem" data-runtime-version="1" data-course-id="course-v1:MITx+3.15.3x+2T2017" data-request-token="4a05e84c61be11f08f6712128dc316c1">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_2689606130bd4e18bd0fccaf86f542bd" class="problems-wrapper" role="group"
aria-labelledby="2689606130bd4e18bd0fccaf86f542bd-problem-title"
data-problem-id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@2689606130bd4e18bd0fccaf86f542bd" data-url="/courses/course-v1:MITx+3.15.3x+2T2017/xblock/block-v1:MITx+3.15.3x+2T2017+type@problem+block@2689606130bd4e18bd0fccaf86f542bd/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="2689606130bd4e18bd0fccaf86f542bd-problem-title" aria-describedby="block-v1:MITx+3.15.3x+2T2017+type@problem+block@2689606130bd4e18bd0fccaf86f542bd-problem-progress" tabindex="-1">
In-Lecture Question 1.1
</h3>
<div class="problem-progress" id="block-v1:MITx+3.15.3x+2T2017+type@problem+block@2689606130bd4e18bd0fccaf86f542bd-problem-progress"></div>
<div class="problem">
<div>
<span id="anchor_change_my_id_for_each_one_on_the_page"/>
<script type="text/javascript">
/* The object here is to replace the single line input with a textarea */
(function() {
var elem = $("#anchor_change_my_id_for_each_one_on_the_page")
.closest("div.problem")
.find(":text");
/* There's CSS in the LMS that controls the height, so we have to override here */
var textarea = $('<textarea style="height:150px" rows="20" cols="70"/>');
console.log(elem);
console.log(textarea);
//This is just a way to do an iterator in JS
for (attrib in {'id':null, 'name':null}) {
textarea.attr(attrib, elem.attr(attrib));
}
/* copy over the submitted value */
textarea.val(elem.val())
elem.replaceWith(textarea);
})();
</script>
<p>Explain why a magnetic particle forms domains.</p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div id="inputtype_2689606130bd4e18bd0fccaf86f542bd_2_1" class=" capa_inputtype textline">
<div class="unanswered ">
<input type="text" name="input_2689606130bd4e18bd0fccaf86f542bd_2_1" id="input_2689606130bd4e18bd0fccaf86f542bd_2_1" aria-describedby="status_2689606130bd4e18bd0fccaf86f542bd_2_1" value=""/>
<span class="trailing_text" id="trailing_text_2689606130bd4e18bd0fccaf86f542bd_2_1"/>
<span class="status unanswered" id="status_2689606130bd4e18bd0fccaf86f542bd_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_2689606130bd4e18bd0fccaf86f542bd_2_1" class="answer"/>
</div>
</div></div>
<div class="solution-span">
<span id="solution_2689606130bd4e18bd0fccaf86f542bd_solution_1"/>
</div></div>
<div class="action">
<input type="hidden" name="problem_id" value="In-Lecture Question 1.1" />
<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_2689606130bd4e18bd0fccaf86f542bd" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_2689606130bd4e18bd0fccaf86f542bd">
<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>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="2689606130bd4e18bd0fccaf86f542bd-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="2689606130bd4e18bd0fccaf86f542bd-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<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="2689606130bd4e18bd0fccaf86f542bd-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>
</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>
</div>
© All Rights Reserved