Cyanometer vs Earth Observery

The original cyanometer was invented by the Genevan physicist and Alpine explorer Horace-Bénédict de Saussure (* 17 February 1740 in Conches; † 22 January 1799) in 1789. It is an instrument for measuring 'blueness', specifically the colour intensity of blue sky. With the measurement it is possible to draw conclusions from the constitution of the atmosphere: the bluer the sky the less the water vapor. Saussures cyanometer consisted out of 53 parts of a circular ring ranging from white over different grades of blue to black (Saussure used Prussian blue). Saussure used his cyanometer for measurements in Geneva, Chamonix und on the Mont Blanc. Alexander von Humboldt used a cyanometer on his expedition to America (1799 - 1804). You can use our Cyanometer in three modes: The modern scale uses distinct grades of blue starting with clear white up to black. The Saussure scale shall give an idea about the colors from Saussures original cyanometer. With the user defined scale own scans of blue skies can be added to an own colored circular ring - an own cyanometer. Each scan is saved inside the app containing information about date, time and locality. So it is possible to compare scans of blue skies from different locations. Privacy notice: No data will be saved or processed outside the app.

Earth Observery - Stay Informed with Real-Time Natural Events Earth Observery is your essential app for tracking natural disasters and extreme weather worldwide in near real time. Whether you’re watching earthquakes, tsunamis, tropical cyclones, wildfires, floods, volcanoes, or drought, Earth Observery brings timely updates together in one place so you can stay aware and prepared. Key Features: • Near real-time awareness: Follow major natural events as they develop—earthquakes, cyclones, wildfires, floods, and more—with clear severity and location context. • Interactive maps & heat view: Explore events on detailed maps, see affected areas at a glance, and dive into full-screen maps when you need a closer look—including storm-track style context for tropical cyclones where available. • Insights: Understand the bigger picture with charts and summaries of recent activity—daily trends, regional highlights, and breakdowns by hazard type. Premium unlocks longer time windows for deeper perspective. • Disaster news: Read curated updates from trusted humanitarian and global reporting sources. Search what you care about and narrow the feed when you want a focused view. • Smart event list: Search events, filter and sort the feed, and see quick summaries by hazard type so the signal cuts through the noise. • Proximity-based emergency resources: When you allow location, find nearby hospitals, shelters, and emergency services with useful contact and direction context—especially valuable while traveling. • Rich event details: Go beyond the headline with location, timing, severity, and supporting context where the sources provide it. • Dark mode: Comfortable viewing day or night during extended monitoring. Why Choose Earth Observery? • Built for travelers, researchers, journalists, and anyone who wants a serious global hazard overview—not social noise. • Brings together information from established international and scientific sources; always treat it as awareness support, not a replacement for official warnings where you live. • Thoughtful layout for preparedness, situational awareness, and peace of mind when the planet is busy. Be Prepared Wherever You Go: At home or on the road, Earth Observery helps you stay oriented. Pull to refresh when you reopen the app to catch up quickly. When you enable location, emergency-resource discovery can point you toward help nearby—always verify details and follow local authorities in an actual emergency. Perfect For: • Emergency preparedness and family awareness • Travel safety and “what’s happening here?” moments • Monitoring earthquakes, cyclones, wildfires, floods, and other hazards worldwide • Anyone who wants maps, trends, and news in one calm, organized experience Terms of use: https://www.digitalrockhub.com/earthobservery/terms.html Privacy Policy: https://www.digitalrockhub.com/earthobservery/privacy.html Disclaimer: Earth Observery uses publicly available hazard and news information. Automated and model-based estimates can change quickly and may be incomplete. The app is not a substitute for official emergency alerts, evacuation orders, or instructions from your government and local emergency services. In any emergency, follow authoritative local guidance first.