日射(にっしゃ)

にっしゃ
noun
sunshine; solar radiation; insolation
1. sunshine; solar radiation
The rays of the sun reaching the earth; solar radiation, often used in technical or meteorological contexts.
強(つよ)い日射(にっしゃ)を避(さ)けて休憩(きゅうけい)した。
I took a break to avoid the strong sunlight.
日射量(にっしゃりょう)が多(おお)い地域(ちいき)は太陽光発電(たいようこうはつでん)に適(てき)している。
Areas with high solar radiation are suitable for solar power generation.
窓(まど)からの日射(にっしゃ)で部屋(へや)が暖(あたた)まった。
The room warmed up from the sunlight coming through the window.

COMMON COMPOUNDS:

  • 日射量(にっしゃりょう) - solar radiation amount, insolation
  • 日射病(にっしゃびょう) - sunstroke (older term, now often called 熱中症(ねっちゅうしょう))
  • 日射角(にっしゃかく) - angle of solar incidence

CONTEXTS:
Used in weather reports, construction (for calculating heat gain), renewable energy discussions, and health warnings about sun exposure.

COMPARISON:

  • 日射(にっしゃ) - solar radiation (technical/scientific)
  • 日光(にっこう) - sunlight (general usage)
  • 日差(ひざ)し - sunshine, sunlight (everyday term)
general
Added 2026.1.23 8:40
07500/07879_nissha