elleThis is the Cyanometer. Invented in 1789 by Horace-Bénédict de Saussure and Alexander von Humboldt, it can be used to measure the blueness of the sky. Or my moods.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.