Across
- 3. the natural agent that stimulates sight and makes things visible.
- 4. the ability to do work, or to make things happen.
- 6. to send out a signal by radio waves.
- 8. the appearance of objects to the eye with respect to their relative distance and position
- 9. to use a code to convert letters into symbols
Down
- 1. to convert information into an on-off code with dots and dashes that can be read by or stored on an electronic device.
- 2. when light shines on an object
- 4. to give off light from a light source.
- 5. a system of signals or symbols used to communication
- 7. to use a code to convert symbols into letters and words.