The whole uses the ultimate sphere geometry as the core language.
The transparent dome of the upper part and the vertical base of the lower part form a complete circle visually.
The transparent hemispherical upper cover is like a miniature "happy theater".
The design deliberately enlarges the proportion of the transparent area, so that users can watch the process of corn kernels bursting, rolling and filling the whole sphere at high temperature 360 degrees without dead corners while waiting.