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Facebook CEO Mark Zuckerberg said he had built an incandescent wooden box that allowed his wife to sleep all night because she was taking care of their children.
The invention – nicknamed a "sleep box" – emits a faint light between 6 hours and 7 hours. Zuckerberg's wife, Priscilla Chan, knows that the couple's two daughters will wake up without having to check her phone.
"Being a mom is hard, and since we have kids, Priscilla has trouble sleeping all night," Zuckerberg, 34, wrote in a post on Instagram.
"She will wake up and watch the time on her phone to see if the children will wake up well, but knowing that the time is stressful and that she can not fall asleep. "
As the box does not display the time, Chan can now go back to sleep without fear of sleeping too long. And the light is visible enough to let her know when it's possible to wake up, but weak enough that she "will not wake her up if she's still sleeping," Zuckerberg said.
The billionaire CEO said he shared his creation in case a contractor wanted to exploit the idea and build the boxes for a wider audience.
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"As an engineer, building a device to help my partner sleep better is one of the best ways to express my love and gratitude," he wrote. "Many of my friends have said that they want something like that …"
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