Across
- 2. was a Scottish-born inventor, scientist, and engineer who is credited with inventing and patenting the first practical telephone.
- 5. A usually molded or dipped mass of wax or tallow containing a wick that may be burned (as to give light, heat, or scent or for celebration or motive purposes)
- 6. The dark figure cast upon a surface by a body intercepting the rays from a source of light
- 9. A system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals.
- 10. A science that deals with the production, control, transmission, reception, and effects of sound
- 11. A person that produce for the first time through the use of the imagination or of ingenious thinking and experiment
- 13. A person learned in science and especially natural science.
- 14. An electric lamp, such as one in which a filament gives off light when heated to incandescence by an electric current
- 15. A small battery-operated portable electric light
Down
- 1. A mechanically, electrically, or electronically operated device for performing a task
- 3. was an American inventor and businessman who has been described as America's greatest inventor.
- 4. container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.
- 6. Mechanical radiant energy that is transmitted by longitudinal pressure waves in a material medium and is the objective cause of hearing WOW! BOOM!
- 7. Having total or partial hearing loss
- 8. Metal in the form of a usually very flexible thread or slender rod
- 12. A periodic motion of the particles of an elastic body or medium in alternately opposite directions. Tuning fork
- 14. Any of various devices for producing light or sometimes heat