I'm new to robotics, I don't understand the way wikipedia defines robotics manipulator. If there is no any direct contact how could the robot move things within his work envelope.

In robotics a manipulator is a device used to manipulate materials without direct contact

source robotics manipulator

  • $\begingroup$ direct contact between what and what? .... the article appears to be poorly worded $\endgroup$ – jsotola Oct 20 '19 at 16:40
  • $\begingroup$ That is what I want to know. $\endgroup$ – Henok Tesfaye Oct 20 '19 at 18:23
  • $\begingroup$ what does the next sentence in the article mean to you? $\endgroup$ – jsotola Oct 20 '19 at 18:28
  • $\begingroup$ I think robots can do tasks that humans can't like removing electrons in an atom(radioactive). $\endgroup$ – Henok Tesfaye Oct 20 '19 at 18:31

The original manipulators referred to in that article were through-the-wall pantographs which moved radioactive materials without the human operator having direct contact with those materials. The end effectors of those manipulators did have direct contact with the materials - just not the human. Although the article is not specific about this, it seems they carry that concept forward for programmable manipulators - that the person doing (or supervising) the task does not engage the product directly.

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