8/27/2023 0 Comments Poetry sindhi![]() ![]() ![]() René Descartes then created a rainbow in his laboratory by passing light through a flask of water and applied Snell’s law to calculate the angles of refraction and reflection of a beam inside a droplet of water. Discovering that when light travels from one medium to another, for example from air to water, it generally bends or refracts, he was able to calculate the degree of bend. The first step on the yellow brick road to understanding rainbows was taken in 1621 when Dutch scientist Willobrord Snell developed his law of refraction. For Keats it was enough to admire it for what it is, railing against Isaac Newton in 1817 for destroying “the poetry of the rainbow” by “reducing it to a prism” and, in Lamia (1820), lamenting that scientists “will… conquer all mysteries by rule and line/ empty the haunted air and gnomed mine/ unweave a rainbow”. A rainbow never fails to enchant, a transient moment of celestial beauty, even though it is one the commonest of meteorological phenomena.
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