silver iodide

基本解釋

The chemicals fired into the sky, usually dry ice or silver iodide, are supposed to provide a surface for water vapour to form liquid rain.
發(fā)射上天的化學(xué)物通常是干冰或碘化銀，它們應(yīng)該能為水蒸汽提供一個表面以凝結(jié)成雨滴。
Desperate people have tried everything from firing cannons into the sky to lacing clouds with silver iodide. Now researchers have attempted to make it rain with lasers.
不顧一切的人們已嘗試過各種辦法，從向空中發(fā)射炮彈催雨到云團中噴射碘化銀。現(xiàn)在研究者們試著用激光催雨。
It was found that a slightly colder threshold for seeding effect to occur for silver iodide than for dry ice (-5 to -10℃ for silver iodide versus -3 to -4℃ for dry ice).
實驗發(fā)現(xiàn)，碘化銀產(chǎn)生播撒效果的臨界溫度比干冰略低（碘化銀為-5℃到-10℃，而干冰為-3℃到-4℃）。

Clouds with extremely cool water are mixed with man-made ice crystals, such as silver iodide and metaldehyde crystals.

More recently, the U.S. government project Stormfury attempted for decades to lessen the force of hurricanes by seeding them with silver iodide.
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These pellets, usually made of silver iodide, salts or calcium chloride, are physically dropped via plane or shot into the air via rockets.
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These offices, set up over the past 15 years, deploy artillery, rocket-launchers and aeroplanes to seed clouds with chemicals (usually silver iodide) that encourage droplets to form and fall where needed, or prevent the formation of destructive hailstones.
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a yellow insoluble powder that darkens on exposure to light: used in photography and artificial rainmaking. Formula: AgI