Reading Comprehension. Popular Inventions from the 1920s

The television was demonstrated at the Royal Institute in 1926.

Television images were first sent across the Atlantic Ocean in 1928

Colour images were not possible until after the 1920s.

People could buy television sets in the 1920s.

When television images were first transmitted, viewers didn’t know exactly what the image was.

Fridges became popular in the USA before they were popular in the UK.

Fridges became popular in the USA before they were popular in the UK.

Home refrigerators were invented in the 1920s.

On some occasions, lie detectors have been used as evidence in court.

Some psychologists helped John Larson to build his invention.

Today, lie detectors are never used by the police.