This tool allows users to do something that many people can do without a second thought
Which of these is made possible by the device pictured?
- A. Cracking an egg.
- B. Taking a selfie.
- C. Threading a needle.
- D. Steadying a moving video camera.
Get the answer here.
Originally published by The New Yor Times science section. All rights reserved. Photo by Han Beol Jang/M.I.T.