Yet since the interaction is very weak, these experiments are very elaborate.

然而，由于这种相互作用非常弱，所以这些实验都非常精细。

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Plasma trap GOL-3 holds experiments on studying interaction of plasma with the surface.

在GOL - 3等离子体捕捉器中进行的试验是研究等离子体与物体表面的相互作用。

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In follow-up experiments, the researchers asked participants to imagine and write about a hypothetical interaction with someone who was extremely wealthy or extremely poor.

在接下来的试验中，研究者要求参与者写一篇想象他们和一位非常富有或非常贫穷的人互动的文章。

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Yet the idea is largely based on anecdotes, and researchers such as Karl MacDorman, associate professor of human-computer interaction at Indiana University, are working on experiments to hone in on possible explanations.

CNN: Why zombies, robots, clowns freak us out

In follow-up experiments, the researchers asked participants to imagine and write about a hypothetical interaction with someone who was extremely wealthy or extremely poor.

ECONOMIST: They are more selfish

Though the final report hasn't been released yet, the project's global survey results and experiments suggest something that a lot of Facebook users already sense: social interaction is a driver for happiness, and the Web 2.0 is a valid way to experience it.

CNN: Can happiness be found online?