How did Aristotle contribute to science?

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

What is a costume plot? why is it important to a film or theater production?

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?