22 Flips | 3 Magazines | 2 Likes | 3 Following | 1 Follower | @davidhurburgh | Keep up with David Hurburgh on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “David Hurburgh”
Le nubi lenticolari “dipinte” nel cielo delle Hawaii, uno spettacolo della natura.<p>Il suggestivo scatto di Jolly Sailor
<b>The Utilities: Under Siege</b><p>In the past year, much has been written by various analysts concerning the risk to the utilities of declining sales volumes as a consequence of numerous factors, especially on-site solar. Every time a solar panel goes onto a roof, sales volumes decline. In May, Barclays …
<b>Pyritohedral symmetry</b><p>This animation by <b>Tom Ruen</b> shows a cube morphing into a regular dodecahedron, then into a rhombic dodecahedron, and then back again. Even better, the morphing is done in such a way as to preserve as much symmetry as possible.<p>As I mentioned in a recent post, the <b>rhombic dodecahedron</b> has 12 identical rhombus-shaped faces, and 24 rotational symmetries. Another way to say this is that there are 24 essentially different ways to pick up a rhombic dodecahedron from a table and then …
Scientists had been basing descriptions of the dingo on a “rudimentary” illustration in a diary from 1789<p>“Everyone has based their descriptions on …Zoology
This Facebook post is no longer available. It may have been removed or the privacy settings of the post may have changed.
You have cookies turned off<p>To use this website, cookies must be enabled in your browser. To enable cookies, follow the instructions for your browser …IT security