And what we did was he put two detection plates on either side of these cathode rays, and when he put a voltage difference between these two plates, he wanted to see if he could actually bend the rays and test if they're actually charged or not.

但没有实验证明这件事,这就是Thomson所做的，它在阴极射线旁边放两块探测板,他想通过看当他,在两板之间加上电压后,阴极射线是不是会。

麻省理工公开课 - 化学原理课程节选

Because we know the difference that early detection makes.

WHITEHOUSE: The First Lady and Dr. Jill Biden Observe Breast Cancer Awareness Month | The White House

The difference is that speech detection is a megabyte problem, while machine vision is a gigabyte problem.

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Unfortunately, there's a significant difference between the time a virus is first released and the time a pattern allowing its detection is available.

CNN: Technology - Analysis: Understanding viruses