Book 15, Question 25
How Small Can a Robot Get, and How Big?
Robots can be super tiny or really huge, and size depends on the job! Scientists have built flying robots smaller than a coin. Others are smaller than a grain of rice, and some are as big as a house.
More fun facts
- Some new robots are smaller than a grain of salt.
- One is as small as a paramecium, a single-celled creature that lives in water.
- Its makers say it is the smallest robot that can move, think and act on its own.
- It is powered by tiny solar cells on its surface.
- Scientists have also made a remote-controlled walking robot shaped like a crab that is smaller than a flea.
- Someday tiny robots might travel through the human body to study cells or deliver medicine.
Sources: Science News Explores, BBC
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