• 0 Posts
  • 61 Comments
Joined 1 year ago
cake
Cake day: July 20th, 2023

help-circle



  • I’ve had that happen with what i assume was a hand lotion because there was a particular part of the lid that smelled.

    I don’t know why other people are treating you with so much disbelief. This absolutely can happen with people not thinking about how their habits impact what customers are consuming. With how many millions of coffee beverages that are served every day, it shouldn’t surprise anyone that some small portion are handled improperly with poor hygiene. It also shouldn’t be overly surprising if you’ve had it happen multiple times because you likely visit the shops near you. Such an event isn’t random and is the result of someone’s bad habits.


  • No, never. Current charging rates already get close to thermal constraints. Hitting those charging rates either requires accepting much lower power density or using way more metal per cell. This research might inform design changes to improve charging rates, but we’ll never see high capacity batteries charging in a minute.

    The researchers know this and only mention wearables and iot devices applications. The article author erroneously makes the leap to high energy density devices.

    If you don’t care about energy density at all, ceramic capacitors can already charge and discharge in microseconds.





  • With an ad blocking dns.

    https://adguard-dns.io/en/public-dns.html

    Go down to the configure manually option and follow the instructions for iPhone.

    I think next guard is also supposed to be decent, but they won’t let you use it without an account.

    The nice thing about the dns approach is it works for more than just your web browser. There’s a bunch of Android games that are essentially unplayable without an adblocking dns.

    As a disclaimer, a bunch of sites are ramping up requiring enabling ads or they won’t let you load the content. I’m ok with just hitting back and not viewing those sites, but my MIL just asked for help removing the ad guard dns because her news sites wouldn’t let her in.




  • Color-safe bleach seems to be Hydrogen Peroxide based, so you were probably safe.

    Traditional Sodium Hypoclorite bleach should never be mixed with vinegar. That can release chlorine gas which is very bad for you even at low concentrations.

    In general, use one cleaning agent at a time with thorough rinses in between. It can be hard to predict how cleaning agents will react. You’re likely to reduce the effectiveness of them by mixing, and there’s a chance of making dangerous byproducts.





  • I’m sure avoiding contaminating the sample was the requirement that had them acting very cautiously. The comments saying that an angle grinder could have it open in 5 minutes were so annoying. Of course NASA engineers could bust it open if that’s all they cared about. The whole point of collecting a sample is to take extremely precise measurements of the contents. Any grinding wheel or saw, would risk adding contamination that would mess up the analysis.





  • http://large.stanford.edu/courses/2015/ph241/degraw2/

    Medical devices is an obvious potential application for beta decay power. In the past, nuclear power sources were at a major size disadvantage and chemically powered cells can also provide very long service life at such small power draw.

    So this definitely isn’t nearly as much of a new concept as the media is suggesting. The question is whether they have achieved a compact enough design to be preferential over competing chemically powered cells.

    Another application would be cmos batteries for holding memory states. Using ssds in external enclosures is compelling to reduce the amount of time it takes to actually read and write a full drive. But ssds need to be powered every once in a while. If their internal power storage depletes they lose data. Backup ssd drives with an indefinite power source would definitely be a compelling option. I do however doubt if this technology could ever be cheap enough for such an application. The materials used seem rather expensive.