/sci/ - Science & Math

Why wouldn't this work /sci/?

>>6967652
I especially like this one

captcha: electric

>>6311442
tyson ties on the bells and whistles and does his job in keeping people interested in the subject, he's alright
>>6311700
how do you hate this guy? i'm pretty sure it's actually impossible
>>6312567
he seems like a smart guy but i've tried to watch some videos of him and i seem to fall asleep whenever his face turnzzZZzzZZzz...

>Landauer's erasure principle exposes an intrinsic relation between thermodynamics and information theory: the erasure of information stored in a system, S, requires an amount of work proportional to the entropy of that system. This entropy, H(S|O), depends on the information that a given observer, O, has about S, and the work necessary to erase a system may therefore vary for different observers. Here, we consider a general setting where the information held by the observer may be quantum-mechanical, and show that an amount of work proportional to H(S|O) is still sufficient to erase S. Since the entropy H(S|O) can now become negative, erasing a system can result in a net gain of work (and a corresponding cooling of the environment).