english: You can't see light. When it's dark, in a vacuum, if a person shines a beam of light straight across your eyes, you won't see it. Slightly technical, some physicists will disagree with this.
non_english: Ne morete videti svetlobe. Ko je temno, v vakuumu, če nekdo posveti žarek svetlobe naravnost čez vaše oči, je ne boste videli. To je malo tehnična stvar, nekateri fiziki se ne bodo strinjali.