Idea of Physics Icon
It is an image of stylized atom. There is a small concentric circle in the middle that isn't touched by anything. Three elongated ovals form the outside, one which stands vertically and the other two form an X.
This Physics icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.