This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Life in Motion Fig . en Fig The spring myograph of du Bois Reymond Life in Motion or Muscle and Nerves org John Gray McKendrick Life in Motion book Electrical measurement instruments
Page 2023 Free-images.com. All images are Public Domain