periscope

«periscope» in Mova's school dictionary: A long tube with mirrors at each end that lets you see… — its meaning for a pupil, its sense in the lessons and examples, with 1 sentence of Mova's corpora that use it.

part of speech

noun (a periscope, periscopes)

meaning for a pupil

A long tube with mirrors at each end that lets you see over or around something, used in submarines and in toys. tree →

sense in the lessons

In science lessons on light, pupils build a periscope with two mirrors at 45 degrees to show that light reflects. In stories a submarine raises its periscope to look above the sea. Phrases: up periscope, look through a periscope, make a periscope.

examples

• The captain raised the periscope to look at the ships. tree →
• We made a periscope from a juice carton and two mirrors. tree →
• With a periscope you can see over a wall. tree →
• Light bounces off both mirrors in a periscope. tree →
• He used his periscope to watch the parade over the crowd. tree →
• The periscope rose out of the water. tree →

note

Countable: a periscope, periscopes. The mirrors are parallel, each tilted at 45 degrees. Do not mix up with telescope (makes far things look nearer) or microscope (makes tiny things look bigger).

In the corpora

• A periscope uses two mirrors to let you see over things.

Trees and pragmatics

Every meaning and example of «periscope» parsed by Mova, each sentence with its dependency tree and frames.