A first order Fresnel lens built in Paris in 1906 for the Sambro Island Lighthouse — the oldest surviving lighthouse in North America, standing since 1758. It guided ships into Halifax Harbour for 60 years, was nearly scrapped in 1966, and was rescued by a curator at the Maritime Museum of the Atlantic. Some things deserve to survive.

#Photography #Lighthouse #Fresnel #NovaScotia #Halifax #MaritimeHistory #History

I'm really not quite sure, still, why exactly #PUBGmobile banned my IMEI for 11 years! 🤣

All i did, was use #PiHole #DNS filtering, and a #fresnel lens.

(Did they disagree with my anti-tracking DNS scheme, or my fresnel magnification?)

Y'know, those fresnel lenses, that are supposed to be reading aides for geriatric purposes - those work quite well, in mobile #gaming, indeed. 😉 ...not quite #cheating, imho.

Oof, how am i re-selling my GS7, now? (actually IMEI-locked, in PUBGmobile?)

Published: Python → generates 3D Fresnel zone volume + LOS between two points and exports KML/KMZ for Google Earth. Great for quickly seeing whether “it should work” and why it doesn’t.
https://github.com/jlpoolen/3D_fresnal_line_of_sight

#RF #Fresnel #LineOfSight #Wireless #GoogleEarth

Magnifying the Motorola Droid

https://makertube.net/w/15tLgyYnF3hE34PZJKieQs

Issue #125 of Blaise Pascal Magazine is available. Topics include updates on project #Fresnel, reducing code with scoped objects in #Pascal, information on the new #Lazarus handbook, an outlook on the Pascal conference 2025 etc.

http://www.blaisepascalmagazine.eu

Reducing costs in solar heat: A comparative study of rotatory #Fresnel and #parabolic trough systems

https://doi.org/10.1016/j.tsep.2025.103526

#CSP #solar #thermal #concentrated