What sextant is made of
An instrument for measuring the altitude of celestial bodies.
- Lens — has part. The sextant’s telescope.
- Mirror — has part. Mirrors — the principle of double reflection.
- Reflection of light — uses. Double reflection brings the celestial body and the horizon together.
- Trigonometry — uses. Navigational calculations.
- Brass — is made of. A sextant is brass.