File:Helioseismic and Magnetic Imager First Light Briefing.ogv
Original file (Ogg Theora video file, length 1 min 39 s, 1,280 × 720 pixels, 500 kbps, file size: 5.91 MB)
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Summary
[edit]DescriptionHelioseismic and Magnetic Imager First Light Briefing.ogv |
English: NASA Caption: The Helioseismic and Magnetic Imager
The HMI will measure the waves rippling across the surface of the Sun and the strength and direction of the surface magnetic field. Wave data is used to create ultrasounds of the Sun, looking under the surface of the Sun to measure the winds that create the magnetic field. The magnetic field data is used to understand how the field erupts through the surface and becomes solar flares and coronal mass ejections, the storms of space weather. This video is converted from the original video's frame rate of 60 to a slower frame rate of 15 which in turn allows a lower bitrate so that more computer users can replay it without pauses. Some artifacts are unavoidable during this conversion. A H264 encoded version from the same source is at [1] on YouTube. |
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Source |
http://www.nasa.gov/mov/445795main_Pesnell_2-HMI-instrumentanddissolve-H264.mov linked from http://www.nasa.gov/mission_pages/sdo/news/briefing-materials-20100421.html Converted as follows:
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Author | NASA/Goddard Space Flight Center Scientific Visualization Studio |
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Licensing
[edit]Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:52, 28 April 2010 | 1 min 39 s, 1,280 × 720 (5.91 MB) | 84user (talk | contribs) | {{Information |Description={{en|1=Helioseismic and Magnetic Imager. NASA Caption: The Helioseismic and Magnetic Imager The HMI will measure the waves rippling across the surface of the Sun and the strength and direction of the surface magnetic field. Wave |
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- File:Helioseismic and Magnetic Imager First Light Briefing 320x180.ogv
- File:Helioseismic and Magnetic Imager First Light Briefing 320x180 ffmpeg2theora-0.24.ogv
- File:Helioseismic and Magnetic Imager First Light Briefing 640x360.ogv
- File:Helioseismic and Magnetic Imager First Light Briefing 640x360 ffmpeg2theora 0.24.ogv
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Short title | 445795main_Pesnell_2-HMI-instrumentanddissolve-H264_mov.mp4 |
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Author | Avidemux |
Software used |