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油滴实验（Oil-drop experiment），是罗伯特·密立根与哈维·福莱柴尔（Harvey Fletcher）在1909年所进行的一项物理学 实验。 罗伯特·密立根因而获得1923年的 诺贝尔物理学奖。 此实验的目的是要测量单一 电子 的 电荷。 方法主要是平衡重力与 电力，使油滴悬浮于两片 金属 电极 之间。 并根据已知的 电场 强度，计算出整颗油滴的总电荷量。 重复对许多油滴进行实验之后，密立根发现所有油滴的总电荷值皆为同一数字的倍数，因此认定此数值为单一电子的电荷e： 库仑。 …

2023年12月11日 · US oil futures notched their seventh straight week of declines on Friday, marking their longest losing streak in five years. The prolonged drop comes as analysts worry …

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2024年10月28日 · Oil futures fell sharply Monday, with U.S. and global benchmark crude posting the largest one-day percentage decline in over two years after widely anticipated Israeli airstrikes against Iran did...

3 天之前 · Oil prices fell on Friday on worries that U.S. tariff wars could spark a global recession, but gained for a third consecutive week after Washington ratcheted up pressure on OPEC members Venezuela ...

2025年3月5日 · Crude oil futures tumbled to trade near their lowest levels in years on Wednesday as jitters about U.S. tariffs and a surprising production hike from OPEC+ rattled commodities markets.

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2024年12月20日 · Crude oil prices were on track for yet another weekly loss earlier today as pessimism about demand growth in China continued to dominate markets. At the time of writing Brent crude was trading at...

Robert Andrews Millikan constructed an experiment where oil was atomized (sprayed through a ne nozzle) to form tiny droplets between two oppositely charged parallel metal plates. Some of the oil droplets pick up one or more excess electrons while passing through the atomizer.