The duration of Down Periscope is 1.55 hours.
The duration of Up Periscope is 1.87 hours.
Down Periscope was created on 1996-03-01.
If the angles of the mirrors that you used on periscope are not parallel to each other you would see the image upside down.
Down periscope!
Lauren Holly. She was in Down Periscope, Dumb and Dumber, and Picket Fences.
NTSFSDSUV - 2011 Up Periscope- Down with San Diego 1-8 was released on: USA: 9 September 2011
To use a periscope to look over a wall, you would place the periscope on top of the wall and then look into the eyepiece at the other end. The mirrors inside the periscope will reflect the view from above the wall down to your eye, allowing you to see over the wall without exposing yourself.
It consists of a set of high quality glass prisms. These reflect the light down the length of the periscope to the eye piece. This allows the viewer to see the surface.
Lauren Holly. She was in Down Periscope, Dumb and Dumber, and Picket Fences.
a diagram of a periscope
someone discovered the periscope
A periscope uses reflection by directing light at an angle through two mirrors to view objects that are not in direct line of sight. The first mirror at the top of the periscope reflects light down, while the second mirror reflects it out to the observer, allowing them to see objects above the periscope's position.