filament

"The sun was shining brightly, making me squint."

"I changed the lightbulb in the living room lamp because the old one had burned out. "

"The botanist studied the different types of flowers in the school garden. "

"Don’t move that beam! It supports the whole platform."

"The candle flickered in the breeze, almost going out. "

"a continuous current of electricity"

"The birds had built an amazing structure out of sticks and various discarded items."

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The old radio used a thermionic valve to amplify the signal, relying on the heat to release electrons. "

"Powerful telescopes look far back into the distant reaches of the Universe."

"The fence clearly marks the boundaries between our yard and our neighbor's yard. "

"The old house still had incandescents in the ceiling fixtures, giving off a warm, yellow glow. "