新泽西上空的额外彩虹
(原标题: Supernumerary Rainbows over New Jersey)
2022-11-27
浏览次数: 16
是的，但你的彩虹能做到吗？2018年，飓风佛罗伦萨的残余经过美国新泽西州的泽西海岸后，太阳从一个方向出来，但相反的方向出现了一些非常不寻常的东西：彩虹大厅。在接下来的半个小时里，让摄影师和他的女儿高兴的是，充满活力的额外彩虹逐渐消失，在这张特色的单张照片中至少捕捉到了五道彩虹。只有当下落的水滴几乎相同大小且通常小于一毫米时，才会形成多余的彩虹。然后，阳光不仅会从雨滴内部反射出来，而且会产生干涉，这是一种类似于扔进石头时池塘里泛起涟漪的波浪现象。事实上，多余的彩虹只能用波动来解释，它们在19世纪早期的显著存在被认为是光的波动性质的早期证据。你的天空惊喜：APOD在你的生日上展示了什么照片？(1995后)
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Yes, but can your rainbow do this? After the remnants of Hurricane Florence passed over the Jersey Shore, New Jersey, USA in 2018, the Sun came out in one direction but something quite unusual appeared in the opposite direction: a hall of rainbows. Over the course of a next half hour, to the delight of the photographer and his daughter, vibrant supernumerary rainbows faded in and out, with at least five captured in this featured single shot. Supernumerary rainbows only form when falling water droplets are all nearly the same size and typically less than a millimeter across. Then, sunlight will not only reflect from inside the raindrops, but interfere, a wave phenomenon similar to ripples on a pond when a stone is thrown in. In fact, supernumerary rainbows can only be explained with waves, and their noted existence in the early 1800s was considered early evidence of light's wave nature. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
© John Entwistle