Quora: Galois Field Automorphism for 15/16 year-old kids

3 common Fields: $\mathbb{R, Q, C}$ with 4 operations : {+ – × ÷}

Automorphism = “self”  isomorphism (Analogy:  look into mirror of yourself,  image is you <=> Automorphism of yourself).

The trivial Field Automorphism of : $\mathbb{R, Q}$ is none other than Identity Automorphism (mirror image of itself).

Best example for Field Automorphism: $\mathbb{C}$ and its conjugate. (a+ib) conjugate with (a-ib)

Field automorphisms using terms a 15/16/ year old would understand? by David Joyce

What interesting results are there regarding automorphisms of fields? by Henning Breede