fluorescence

"All he had to show for four years of attendance at college was a framed piece of paper."

"The campfire emitted a warm, orange glow. "

"the emission was mostly blood"

"The teacher's enthusiastic lesson stimulated the students' interest in science. "

"Asphalt, composed of oil and sand, is a widely used material for roads."

"The scientist studied the tiny particle of dust. "

"heat radiation"

"The geologist found a beautiful mineral specimen in the rock collection. "

"The cell phone emits electromagnetic waves that allow us to communicate. "

"The science classroom used a blacklight to reveal invisible ink messages written on the paper. "

"Scientists use powerful microscopes to study the behavior of subatomic particles inside atoms. "

"The absorption of new information during the lecture was crucial for passing the exam. "