Energy in the form of electromagnetic radiation emitted from the Sun; especially that part of this energy that is converted into usable thermal or electrical energy by man.

A semiconductor device that converts the radiant energy of sunlight into electrical energy

The amount of incoming solar radiation per unit area, measured on the outer surface of Earth's atmosphere, in a plane perpendicular to the rays.

(astronomy) All the electromagnetic radiation and subatomic particles radiated from the Sun, especially that part that reaches the Earth

(astronomy) The upper atmosphere of the sun, only visible during a total solar eclipse

(astronomy) A phenomenon occurring when the Moon passes between the Earth and the sun.

The part of the sun's 11-year cycle during which the number of sunspots and solar flares is at a minimum.

The part of the sun's 11-year cycle during which the number of sunspots and solar flares is at a maximum.

plural of solar cycle

(astronomy) The nearly periodic 11-year change in the Sun's activity, measured from a minimum of activity to the next.