Science
A body of knowledge, often formulated as laws and theories, based on the collection of data through observation and experiment.
CHEMISTRY
Chemistry is the study of the constitution of matter and its interactions; it has numerous applications, including biochemistry, electrochemistry and nuclear chemistry.
PHYSICS: MECHANICS
Mechanics is the study of force and motion. A mechanism is defined by two forces: the driving force (effort) and the resistant force (load).
PHYSICS: ELECTRICITY AND MAGNETISM
Electromagnetism is the study of the relationship between electricity and magnetism. Its many applications include motors, loudspeakers, measurement instruments and computers.
PHYSICS: OPTICS
Optics: the scientific study of light and vision; its various applications include lenses, microscopes, lasers and fiber optics.
MEASURING DEVICES
Instruments for determining various quantities such as temperature, mass, height, length, voltage and mechanical force.