electromagnetic waves

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Across
  1. 2. radio and television communication.
  2. 3. Artificial lighting, optical fibers in medical uses, screen ectronic devises.
  3. 7. sattelite television and communication.
Down
  1. 1. Sterilization, flourescence.
  2. 4. Remote control, household electrical appliances.
  3. 5. Medical treatment.
  4. 6. Medical use.