Geometric Embedding

A geometric embedding $\mathcal{F}\hookrightarrow\mathcal{E}$ is a Geometric Morphism $(f_{*}:\mathcal{F}\to\mathcal{E},f^{*}:\mathcal{E}\to\mathcal{F})$ such that the Right Adjoint $f_{*}$ is Fully Faithful; EG: $\mathcal{F}$ is a Reflective Subcategory of $\mathcal{E}$.