![]() Mammatus clouds generally appear in connection with substantial cumulonimbus clouds. The shapes of mammatus formations can vary greatly they can range from the typical bulging shape to a more elongated tube dangling from the cloud above. ![]() The Met Office of the UK explained that Mammatus clouds are among the most extraordinary and easily recognizable cloud formations, with a pattern of protuberances or sacs extending from the base of the cloud. When sunlit from the side, Mammatus clouds that form as a result can appear particularly striking. These pockets can arise in the air that is turbulent close to a thunderstorm. As water droplets grow, an opaque cloud forms.” However, in certain circumstances, cloud pockets can form containing substantial droplets of water or ice, which fall into clear air as they dissipate. NASA explained along with the image that clouds do look bubbly “because moist warm air that rises and cools will condense into water droplets at a specific temperature, which usually corresponds to a very specific height. However, NASA's Astronomy Picture of the Day today is of an cluster of clouds that appear like bubbles from the bottom hovering over Nebraska, a state in the Midwestern region of the United States. Well, how do you usually see clouds? NASA says that normally, cloud bottoms are flat. I'm not sure it was the reason why it started cooling down, but it did.Nature is the ultimate beauty! Whether it is about volcanoes, beaches, mountains, valleys, rivers, seas, forests and even clouds, nature never leaves a chance to surprise us. : We disconnected it from both the power and the machine and turned it off. : Sounds like something I would have read on the BoFH column. ![]() : I forget which rule of sysadm club it is which states that "Nothing is uninterruptible if you try hard enough". could you turn it off? for a UPS it's not even enough to pull the plug from the outlet Open my $fh, '>', $file or die "can't write to $file: $!" My ($self, $tagname, $attr, $attrseq, $text) = ($state eq 'date') : $!" # Modify the configuration in the main package below # picture for anyone who cares to use it to any end # Script can also maintain a symlink to the latest # Images are downloaded to a directory and stored # with metadatas in YAML format (HTML is stripped) # Downloads NASA Astromy Picture of the Day apparently symlink will fail when asked to overwrite a link. If you're going to use this in Windows, you should at the very least set $LINK to undefĮDIT: added a line to remove old CURRENT link before updating it. If you want to use this, you should probably tinker with it to suit your needs. I had to use some pretty ghetto techniques to parse the APOD page, which is completely invalid and uses no semantic markup at all, so I figured I might as well ghetto-ize the whole script. I used a number of such "ghetto" Ways To Do It (noted in comments) because I wanted to keep it simple and functional. Also the script will refuse to overwrite files, because that makes sense to me. The date is not validated beyond checking that it consists of 6 digits. You can also pass a date as the argument (in YYMMDD format, to match the URL format of the APOD archive) to fetch old pictures. Depending on your WM, it may be simpler to create overlays/widgets/gadgets/etc. This would require the display resolution to be provided in the config section so as to render the text in an appropriate size and position relative to the screen. The metadata (title, credit, description) is extracted from the page and stored in a YAML file, mainly because I'm considering adding an ImageMagick script to create an annotated image. The default functionality will maintain a symlink to the latest image providing easy access for a WM or whatever else you want to use it. The intended use is to run it as a cron job.
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