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.
Kirchhoff . en This is diagram which is to be used to show the derivation of Kirchhoff's inegral theorem own Epzcaw It is handdrawn sketch hope to have an improved version created Cczero Kirchhoff svg Optics diagrams Waves
Page 2023 Free-images.com. All images are Public Domain