An illustration of technology icons. "A grey science-focused icon set consisting of: an electric plug, a group of people, a pen, reaction tubes, cloud printing, a key, an arrow pointing upward, a strand of DNA, a calculator, different sized water drops, a light bulb and a sheet of paper."
This is a completely free image Technology Icons Set that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.