Mechanical waves require a medium to travel through. Examples of mechanical waves are sound waves, water waves, a vibrating string. (See related link). Electromagnetic waves â¦(such as light, radio waves, X-rays, microwaves) do not need a medium to travel through, so these are not mechanical waves.
Photostat definition, a camera for making facsimile copies of documents, drawings, etc., in the form of paper negatives on which the positions of lines, objects, etc., in the originals are maintained. a copy made with this camera.
Definition Photosynthesis: the process in which green plants use energy from the sun to transform water, carbon dioxide, and minerals into oxygen and organic compounds. Photosynthesis means: putting together the light: photo (light) + synthesis (put together) Hawaiian Translation: KÄâamaâai