Answer:
visible light I know for a fact that is the answer
It was used as a secret code among the slaves.
Gulliver using his glasses as a shield in a military operation while the Blefuscudians shot arrows at Gulliver's face and neck in Jonathan Swift’s Gulliver’s Travels. This situation described as an ironic situation because Gulliver did not defend his face and neck from the arrow<span>. He rather defends his eyes using the glasses.</span>
Precise words.
confusing, vague, generic words aren’t creative or important to create an experience
It is important to laugh because of these reasons.
Laughing<span> lowers blood pressure
Reduces stress hormones
Increases muscle flexion
Increases the circulation of antibodies in the blood stream
Makes us more resistant to infection.</span>