noise
By Unknown
That moment when you're not sure if your housemates heard you having sex or not: you don't know whether they're acting awkward or not, and you're not sure whether you should act awkward or not.
People who aren't awkward don't have this problem, but I don't know anyone like this.
Via Nature
Plans for the next generation of electron microscopes have been dealt a blow by the discovery of an unexpected source of noise that could frustrate efforts to improve resolution to well below the size of an atom.
