I love the ads that have that X’s and O’s background so you mistake a random X inside the ad for the “close” button and accidentally give them a clickthrough.
The human finger can discriminate between surfaces patterned with ridges as small as 13 nanometers in amplitude and non-patterned surfaces, surface chemistry Professor Mark Rutland said. “This means that, if your finger was the size of the Earth, you could feel the difference between houses [and] cars,” Rutland said.
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