Tesla patented a device he believes gathered energy from light. (US 685,957 - Apparatus for the Utilization of Radiant Energy):
112637
Does Tesla's photoelectric "solar cell" really work?
137007
What kind of capacitor could build up, and maintain a charge acquired from lightning?
107695
From where do the permanent magnets get energy from?
35154
Can the Earth's magnetic field be used to generate electricity?
91399
Electricity Transformers and power
66389
A flashlight's lifetime
107891
Work done in moving a charge
157440
Are Fresnel lenses widely used for solar electricity? If not, why not?
56791
How is light emitted by an incandescent lamp
156100
Toroid with variable current and Ampere's Law
64508
Where exactly does energy quantisation come in for light?
143758
Shine a light into a superconductor
152810
Distribution of time that a flashlight can operate
125974
How do I define solar irradiance in the context of a solar cell?
56772
Was Maxwell's displacement current the only way to fix up Ampère's Law?
144256
Light formed by the sun?
98252
How do I calculate the power consumed by a lightbulb?