The main differences between emitter and collector are doping concentration and size. The emitter is heavily doped, while the collector is lightly doped. You could try to swap them, but you'll get a very low \$H_{FE}\$, probably even less than 1.
Image Credit: Photo: Oxmoor House. SEASON: Although available year-round, eggplant is at its peak from July to October. CHOOSING: When selecting, look for eggplants with firm, glossy skin. Size and color vary widely among types, but the eggplant should feel heavy. Avoid those with wrinkled skin, soft spots, or brown patches.
At optimal conditions, the growing eggplant seeds should germinate within 7 days. Two weeks after germination, fertilize the seedlings once a week with a soluble fertilizer â 1 tablespoon of fertilizer to one gallon of water. Eggplant seedlings will be ready to transplant in 6-8 weeks.