Psychology Icon in iPhone Style

This is a Psychology icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 12,300 icons, all in the same style and quality.
The psychology logo is A trident. It consists of a pole like rectangle. On each side of the pole, there are curved barbs, shaped like horns, atached to each side.

Idea of Psychology Icon by Anonymous

We've received the idea on November 01, 2012 and created the icons on April 13, 2013

Math, Science, Social Studies, Language Arts, etc.