If a burning candle is covered by a transparent glass, the flame extinguishes and a steady upward stream of smoke is produced. Investigate the plume of smoke at various magnifications.
如果一支燃烧着的蜡烛被一块透明玻璃板覆盖，火焰会熄灭，并且产生一缕稳定的向上流动的轻烟。研究在各种放大倍数下的羽状的烟。
【此处plume有羽状之意，故不将题目翻译为轻烟一缕】