In energy efficient fluorescent lighting, europium provides not only the necessary red, but also the blue.
ໃນພະລັງງານເຮັດໃຫ້ມີແສງ fluorescent ປະສິດທິພາບ, Europium ໃຫ້ບໍ່ພຽງແຕ່ສີແດງ neccessary, ແຕ່ຍັງໄດ້ສີຟ້າ.