#waveguide — Public Fediverse posts

Got pulled down a rabbit hole learning about Schumann resonances, which are electromagnetic wave resonances in the atmosphere because the area between the earth's surface and the ionosphere acts as a spherical waveguide. The energy input is from lightning, which is practically continuous (50 strikes/s) when viewed worldwide. The fundamental frequency involved is 7.83 Hz, with various weaker harmonics above that.

How I got pulled into the rabbit hole...

Of *course* people are selling woo / magic / New Age B.S. around this stuff. But I'm sorry to say, your little trace-printed-on-a-PCB antenna supposedly broadcasting on this frequency to boost its "natural healing properties" is not going to be an effective radiator at sub-8 Hz, even if you turn it into a spiral to make it longer. The wavelength of the 7.83 Hz fundamental is ~38,000 km, so a basic quarter-wave antenna should be >9000 km long...

#woo #magic #NewAge #crystals #healing #BS #scam #RabbitHole #Schumann #SchumannResonance #electromagnetic #ionosphere #waveguide

Applications and Beyond
NIL's impact spans diverse fields:
•🕶️ Optics: #Lenses, #prisms, #waveguide couplers for #AR/#XR
•⚙️ Nanotechnology: Custom nanostructures
•🏥 Biomedicine: Precise #diagnostics, point-of-care devices and lab-on-a-chip

Teardown: Cobra XRS 9740 Radar Detector - Drivers with a lead foot more often than not have Waze open on their phone so they can see if other ... more: https://hackaday.com/2020/03/18/teardown-cobra-xrs-9740-radar-detector/ #reverseengineering #superheterodyne #radardetector #engineering #leddisplay #atmega644 #waveguide #carhacks #teardown #cobra #laser #radar #jtag