The periscope, and I believe they have a lot more than 2 mirrors.
If you mean in the periscope, two.
The collective noun for 'sailors' is a crew of sailors, whether there are two sailors or hundreds of sailors.
Concave mirrors and convex mirrors are two types of curved mirrors. Concave mirrors converge light rays to a focal point and can form real or virtual images. Convex mirrors diverge light rays and produce virtual, upright, and diminished images.
Reflecting TelescopeA reflecting telescope uses a lens and two mirrors. The lens is positioned at the eyepiece, and thus the focus, which the two mirrors generated by specifically redirected light. There are two types of reflecting telescopes with one lens and two mirrors, the Newtonian Focus and the Cassegrain Focus.
He was a US Naval Submarine Officer.
The Two Tools That Europeans Got From The Muslim Sailors We're To Be The Compass And The Astrolabe.
The most curved mirrors are spherical mirrors. The centre of curved surface is called center of curvature. There are two kinds of spherical mirrors. Concave and convex mirror.
The Mirror of Erised and the two-way mirrors are not real things.
An incline is a ramp or gentle slope. Inclined mirrors are two or more facing mirrors that are not both perpendicular to each other in two directions. For example, if two mirrors were on opposite walls of room, then one edge of one mirror were twisted (lifting the bottom off the wall or the right side), then the mirrors would be inclined from each other.
Reflecting TelescopeA reflecting telescope uses a lens and two mirrors. The lens is positioned at the eyepiece, and thus the focus, which the two mirrors generated by specifically redirected light. There are two types of reflecting telescopes with one lens and two mirrors, the Newtonian Focus and the Cassegrain Focus.
One the sailors ship could tip over,Two the ship could crash and sink.
They both have two syllables. Relevant - rel-evant. Submarine - sub-marine.