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.
Eggplant (Solanum melongena) or aubergine is a species of nightshade grown for its edible fruit. It is known in South Asia, Southeast Asia and South Africa as brinjal. Eggplant is the common name in North American and Australian English but British English uses aubergine.Other common names are melongene, garden egg, or guinea squash. The fruit is widely used in cooking. As a member of the genus Solanum, it is related to both the tomato and the potato.he eggplant is a delicate, tropical perennial often cultivated as a tender or half-hardy annual in temperate climates. It grows 40 to 150 cm (16 to 59 in) tall, with large, coarsely lobed leaves that are 10 to 20 cm (3.9 to 7.9 in) long and 5 to 10 cm (2.0 to 3.9 in) broad.