Like Fluoride or Oxygen.
Just about anything including water or salt
Not just about. Literally everything is lethal at a high enough concentration.
LD50’s are fun!
Alle Dinge sind Gift, und nichts ist ohne Gift; allein die Dosis macht, dass ein Ding kein Gift ist.
All things are poison, and nothing is without poison; the dosage alone makes it so a thing is not a poison.
Paracelsus, 1538
The word for poison in German is Gift?!
The word has been used as a euphemism for “poison” since Old High German, a semantic loan from Late Latin dosis (“dose”), from Ancient Greek δόσις (dósis, “gift; dose of medicine”). The original meaning “gift” has disappeared in contemporary Standard German, but remains in some compounds (see Mitgift). Compare also Dutch gift (“gift”) alongside gif (“poison”).
Well that’s dumb.
I’d argue gravitational force isn’t lethal. As long as you don’t arrive at whatever is pulling you & the gradient of gravity doesn’t change across your body length. You could be perfectly fine (for a while) orbiting a black hole at enormous speeds (assuming you don’t collide with matter in the accretion disc.
I’d argue against that. For one thing it is impossible to imagine a situation where there is no change in the gravitational gradient across your body over time. Your orbiting a black hole situation is a perfect example of a situation where the gradient alone would tear you apart. The conditions you’ve specified are tautological. There’s no way to maintain a zero gravitational gradient while also simultaneously having extremely high gravitational field. The two are mutually exclusive in any conceivable scenario.
It’s like saying a human being in a hypersonic wind stream won’t necessarily hurt you, burn you alive and rip you to pieces (not necessarily in that order) as long as there is no turbulence and you have a sufficient boundary layer – but you’re a non-aerodynamic human body in a hypersonic wind stream, so of course there will be turbulence and the boundary layer will not protect you at all, you’re going to die, basically instantly.
I think General Relativity is based on the idea that a frame of reference that’s in freefall is equivalent to one that in a gravity free region of space (at least that was one of Einstein’s Gedankenexperiments that led him to his theory of GR).
Having said that, in reality a sufficiently strong gravitational field will cause a tidal effect, which will crush you along one axis and pull you apart along another.
Wouldn’t a high enough force cause the gradient of gravity to differ?
Unless I misunderstood how that works. I’m picturing a downed powerline that causes large differences in voltage across the ground, which is why you are supposed to shuffle instead of taking a normal step. Would a high enough gravity cause a harmful gradient across the length of a human body?
I thought about this a bit and concluded that it only applies to physical materials and forces.
For example: There certainly are lethal ideas, but most of them are not, and much like bosons they can overlap, so filling a person with multiple copies of the same (benign) thought has a diminishing effect.
But yeah, anything physical has a lethal concentration.
Panadol / Paracetamol / Tylenol / Acetaminophen / C8H9NO2 is exceptionally easy to overdose on. I’ve done it accidentally a couple of times. It causes liver damage at even lower overdoses, you really don’t want that.
The maximum dosage is 1g every 4 to 6 hours, maximum total 4g a day. I am no doctor but I strongly recommend 6+ hours between doses (I set a timer) and I try very hard to not get to 3g or above per day. It’s even worse that plenty of medications just throw it in to the mix casually.
Unfortunately as the only first line of defence I have against pain, I cannot avoid it altogether. Redflags for me were light abdominal pain and yellowing of skin under eyes. Plus fatigue, but that’s normal in my world.
Huh. That might explain the last two weeks. Dental pains. Lot’s of tylenol. And why I feel much better now.
For dental pain I recommend ibuprofen (advil). Seems to work significantly better than acetaminophen (Tylenol) and seems to be much safer.
Definitely ease up on it if you can, especially if you’ve been taking it for more than a week regularly. If you can’t reduce usage/dose, then be much more generous with the minimum gap between doses, especially if your liver is already under a bit of pressure from other meds or alcohol.
Pain sucks, and pain management causes pain. Sorry about the dental stuff, my issue isn’t teeth but I know that is no fun too.
I accidentally overdosed on acetaminophen after a surgery once. Doctor forgot to tell me (or I was still high when he told me) he gave me acetaminophen during/after the surgery. I thought I still could take up to 4g that day. A few hours after the surgery, the pain started to kick in so I took some acetaminophen. Ended up vomiting uncontrollably.
Weed. A gram will get you high. A woolpack full of it can crush you like a grape if falling from the hay loft.
According to people I know, I’m only ok in small doses.
Then they leave.
So you’ve never had so far the opportunity to test whether or not you are lethal at higher doses ?
Took a Hazmat class today and the big thing they drilled into our heads was “Everything is toxic at scale.” So make anything you want and there is an IDLH concentration.
