This is a physical property of all visible light determined by the light's frequency and visible to the human eye.

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

When using the scientist method, which step comes last?