This is the 3230th most frequent Japanese word.
太陽光
Solar light.
Here, '太陽光' is part of a compound word '太陽光発電' (solar power generation), used to describe a technology utilizing solar energy.
太陽光発電は環境に優しい。
Solar power generation is environmentally friendly.
In this example, '太陽光' refers to sunlight as a physical phenomenon or natural light from the sun.
窓から入る太陽光が部屋を明るくする。
The sunlight entering through the window brightens the room.
Here, '太陽光' depicts sunlight as a necessary element for photosynthesis, emphasizing its role in natural processes.