spectrophotometer

"The recipe calls for a precise measure of baking soda. "

"The teacher determined the rules for the classroom project, setting clear limits on the length of presentations. "

"The violinist was a master of her instrument."

"My family has a different ideal for my future than I do. "

"The plant's leaves showed high absorbance of red light, which helped it efficiently convert sunlight into energy. "

"Different colors of light have different wavelengths, with red light having longer wavelengths than blue light. "

"The intensity of the music made it hard to concentrate on my homework. "

"heat radiation"

"My concentration was high during the important math test. "

"We measured the temperature with a thermometer.   You should measure the angle with a spirit level."

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

"The lemonade was a clear solution of lemon juice and water. "