lumen

"The sun appeared from behind the clouds. "

"The student used a microscope to see the tiny cells in the plant leaf. "

"The fireflies created a luminous glow in the backyard. "

"I need to study my biology notes."

"It is difficult to provide for my family working on minimum wage."

"to enclose lands"

"The classroom felt much brighter after we opened the curtains. "

"In order to withdraw money from a cash machine, you have to insert your debit card."

"The lamp's reflector concentrates the light into a solid angle of approximately one steradian, providing focused illumination. "

"The large oak tree surrounding the picnic area provided welcome shade. "

"The United team includes five England internationals."

"The doctor found several blockages in the patient's arteries, which were causing chest pain. "