"Antennas can convert electromagnetic spectrum much more efficiently than photovoltaic (PV) cells."
http://www.novasolix.com/technology
"A satellite dish is just a special kind of antenna designed to focus on a specific broadcast source. The standard dish consists of a parabolic (bowl-shaped) surface and a central feed horn."
https://electronics.howstuffworks.com/satellite-tv6.htm
"Parabolic reflectors are used to collect energy from a distant source (for example sound waves or incoming star light)."
"The precision to which a parabolic dish must be made in order to focus energy well depends on the wavelength of the energy. If the dish is wrong by a quarter of a wavelength, then the reflected energy will be wrong by a half wavelength, which means that it will interfere destructively with energy that has been reflected properly from another part of the dish. To prevent this, the dish must be made correctly to within about 1/20 of a wavelength. The wavelength range of visible light is between about 400 and 700 nanometres (nm), so in order to focus all visible light well, a reflector must be correct to within about 20 nm."
https://en.wikipedia.org/wiki/Parabolic_reflector
"Electromagnetic radiation is categorized using the electromagnetic spectrum, which is normally ordered by frequency. The visible light frequency is 400 THz to 700 THz, approximately. A THz is a Terahertz, which is a unit of frequency equal to one trillion Hertz."
https://study.com/learn/lesson/frequency-light.html
"the source of energy that powered Tesla’s electric car in 1931 was energy harvested from EM waves that is everywhere this type of electric car had unlimited range.
Tesla used an antenna to capture this free energy"
https://www.apparentlyapparel.com/news/nikola-teslas-black-magic-wireless-touring-car
"Tesla would fool with some tuners and tune in the right frequency and got 240 volts"
https://waterpoweredcar.com/teslascar.html
"cosmic energy. It varied from night to day and from season to season but it is always present."
https://www.nuenergy.org/nikola-tesla-radiant-energy-system/