laser

«laser» in Mova's school dictionary: A machine that makes a very narrow, strong beam of light… — its meaning for a pupil, its sense in the lessons and examples, with 3 sentences of Mova's corpora that use it.

part of speech

noun (a laser, lasers)

meaning for a pupil

1) A machine that makes a very narrow, strong beam of light of one colour. tree →

2) The beam itself. tree →

sense in the lessons

In science, lasers are used in barcode scanners, eye surgery, measuring distances, cutting metal and in light shows. In safety, never shine a laser pointer at someone's eyes, at animals, cars or planes — it can blind people. Phrases: «laser pointer», «laser beam», «laser printer», «laser tag».

examples

• The shop scanner uses a laser to read barcodes. tree →
• The teacher pointed at the screen with a laser pointer. tree →
• Never shine a laser in anyone's eyes. tree →
• Doctors can fix eyes with lasers. tree →
• We played laser tag at the party. tree →
• A laser beam is very straight and narrow. tree →

note

Countable: lasers. It was made from the first letters of a long phrase, so it is an «acronym». Shining lasers at aircraft is dangerous and against the law.

In the corpora

• Lasers can damage sight, so a laser pointer is never pointed at anyone's eyes.
• Scientists still bounce lasers off mirrors left on the Moon by the Apollo astronauts between 1969 and 1972.
• Astronauts walked on the Moon between 1969 and 1972 and left mirrors there that scientists still bounce lasers off.

Trees and pragmatics

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