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Level A1 – BeginnerCEFR A1
2 min
70 words
- Researchers use lasers to precisely move tiny devices.
- The devices are called metajets.
- The metajets can move in three dimensions.
- This is a new step in optical propulsion.
- Lasers push the metajets like tiny balls.
- The parts are made from thin metasurfaces.
- Scientists tested metajets in a fluid.
- The devices are very small, smaller than hair.
- Researchers hope to test in microgravity later.
- The idea could help future space travel.
Difficult words
- laser — a strong beam of focused lightlasers
- device — a small machine or tool for workdevices
- metajet — a tiny device moved by light beamsmetajets
- propulsion — a force that makes something move forward
- metasurface — a very thin engineered surface that controls lightmetasurfaces
- microgravity — very low gravity, like in space
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Have you ever used a laser?
- Would you like to see very small devices?
- Would you like to travel in space?
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