File:Dry ice pellet subliming in water.jpg
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DescriptionDry ice pellet subliming in water.jpg |
Before stars, the universe had only the three lightest elements: hydrogen, inert helium, and a bit of lithium. With just these building blocks, the complex molecules needed for life would not be possible (blog: Ode to Carbon). Carbon, oxygen and the rest of the heavier elements came from the crucible of stars that died billions of years ago. Here you see a light blue pellet of “dry ice” floating on a shallow bed of dark blue water and shooting off geysers of carbon dioxide as it warms up. The dry ice is solid CO2 which sublimates directly to gas as it warms up (skipping the liquid phase altogether). Particles glide along the surface, spin, and merge when they touch. Here is a very cool video of the icy bodies spinning and shooting around.☆ |
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Date | |||
Source | Flickr | ||
Author | Steve Jurvetson | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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Reviewer InfoField | Astrojunta |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:48, 22 November 2007 | 1,206 × 727 (370 KB) | Flickr upload bot (talk | contribs) | Uploaded from http://flickr.com/photo/44124348109@N01/360135441 using User:Flickr upload bot |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon PowerShot SD700 IS |
Exposure time | 1/50 sec (0.02) |
F-number | f/2.8 |
Date and time of data generation | 16:20, 14 January 2007 |
Lens focal length | 5.8 mm |
JPEG file comment | AppleMark |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | QuickTime 7.1.3 |
File change date and time | 19:09, 16 January 2007 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 16:20, 14 January 2007 |
APEX shutter speed | 5.65625 |
APEX aperture | 2.96875 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode, red-eye reduction mode |
Color space | sRGB |
Sensing method | One-chip color area sensor |