tomek_ycomb

It definitively works with bright lights, but intensity seems important (maybe also spectrum.) I find only a light that would hurt to stare at works

So frame astrology type things as a randomization tool, that allows you to randomly navigate a set of questions and assessments to see how you're doing and feeling.

Remember when we learned about how bone divination helped hunter gathers search random areas and not be stuck with the bias of hunting where you previously hunted too much?

Kind of related. But, anyway, what I'm trying to say. I also feel like it's a snake oil scam and impossibly hard to avoid dishonesty at a random sample of astrologists.

My random card reader really flipped my head around when they promised me my reading without knowing my question or answers. They asked me how I felt about my questions and some considerations I could take about the answer and outcome, based on my cards. They said it was a process to navigate your thoughts, not for future telling. And I was impressed enough at this reframing to want to try and convince a few other HN nerds to consider this point as well. Be upset about the scammers but don't miss the possibility there can be a nugget of value and process outside of what you're expecting. There tend to be reasons why people continue doing things across cultures and time (there's something they get value out of in it, usually)

Excellent information from the person(s?) running air gradient with regards to pm sensor tech and design. Blog posts, etc.

Ranges of kits from pre assembled to solder-yourself, that HN might like.

(I am happy with my unit I gave to a friend with a wood fire stove heated house, and built one from kit to save some $ another time.)

Accelerometers and gyros are used and integrated to get their higher order information. However the trick is neither sensor type is perfect so you fuse as much data as needed to get close to good and correct for drifts

Kalman filters come up a lot, maybe relevant to the terms you're looking for

It's nature, it's continuous at small enough scales.

But, checkout Zeno's paradox for more on your philosophical questions

I think bus is braking with a constant breaking force.

But, the bus has a non-constant kinetic energy (going up with the velocity*velocity, down as velocity goes down.)

So, you're actually producing a non-linear acceleration. This is jerk, but you can also think of it as just a non-linear acceleration and people are reacting to the fact it's not at all near constant deacceleration, and this is most noticable as velocity hits zero.

So, yes, it's jerk, but no, I think it can be intuitively better understood with pure acceleration terms and no jerk needed

UHHHHHhhhh, it's because the last A*b is the only one that becomes a linear constant. For other polynomials, your derivative is a polynomial still, just different one.

These are mathematical derivatives, I think of them as the slope of the thing it's derived of, aka the change in the thing that it's a derivation of.

I think I don't have a sophisticated mathematical understanding, but my basic mechanic understanding makes it feel simpler than your question is acting.

It's much easier to manage tension on 3x7 over 1x9

I think this not wrong but mildly misleading.

Whatsapp started encrypting messages after significant security issues in ~2012

It was purchased by Facebook under initially some administration separation terms in ~2014?

In 2016 it added e2e encryption. If I recall this was controversial because it limits fb ad potential on users.

I guess what I'm trying to say is that the timeline seems to me to still be pointing towards <<e2e came from Whatsapp not FB as an initiative, even if FB owned Whatsapp at the time.>>

Again you're not factually wrong, but I hope my restating of the timeline makes it more clear why i I think your reverse order point doesn't tell the same story.

Just to reiterate what other people have said, no! There are extremely few cases residential wind makes sense. Maybe in some cases where geometry of buildings allows for an effective wind sweep much greater. But otherwise, winds aren't windy enough at building level.