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In our case, our primary mirror has a diameter of 150mm and considering if the average human eye lens has a diameter of 6mm in darkness, how much more light will the mirror gather than the human eye?
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Sony WH-1000XM6 — $398 $459.99 ($61.99 less)
清迈街景远胜暹粒。随处可见的雅致建筑与街头涂鸦满足人们对"热带风情"的想象。清迈民居围墙颇具观赏价值，墙头镂空花纹至少十余种：菱形交织、圆孔错落、百叶式平行排列不一而足。藤蔓从孔洞钻出，有些墙头连绵绽放炮仗花。不过墙后往往杂草丛生，房主能在门廊稍作美学修饰已属难得。