dirce -di'e- gismu

x₁ radiates/emits x₂ under conditions x₃.

In notes:

gusni: x₁ [energy] is light/illumination illuminating x₂ from light source x₃.
bacyxundi'e: d₁ radiates/emits infrared radiation d₂ under conditions d₃.
bacyzirdi'e: d₁ radiates/emits ultraviolet radiation d₂ under conditions d₃.
dircynavni: x₁ is a quantity of/contains/is made of radon (Rn).
mijdi'esirji: x₁ is a radius of shape x₂
vubla: x1 pertains/is related to/reflects (the) weak nuclear force [fundamental interaction] in manner/with properties/in state/with realization x2, coupling to x3 in manner/with strength x4
jbofuvi: x₁ is a Lojban-derived zi'evla/"self-loan-word" with meaning x₂ derived from word(s) x₃
tcernobi: x₁ explodes emitting radioactive particles x₂
xy zei dirce: d₁ radiates X-rays d₂ under conditions d₃.