If you look at the stem of an artichoke you will see a ring, with tough green bark (for want of a better term) surrounding a paler green heart.The bark is not good to eat, and you should remove it with a paring knife, leaving the heart of the stem, which is good to eat.ere we were going to need sliced artichokes, and trimmed the stem of the artichoke leaving about an inch (2.5 cm) below the petals.
Si is the short form for Silicon and silicon is not a metal. Si is the short form for Silicon and silicon is not a metal.
Silicon (Si) is one of the most important semiconductors today because it has a very low occurance of defects. While it's the building block of most electronic devices, other semiconductors are becoming more important in industry because of their superior properties. The search for organic semiconductors as well as hybrid materials which combine organic and inorganic materials is underway.