Recent comments in /f/washingtondc

chickunsendwich t1_j8i8n9e wrote

Reply to comment by wogal555 in Ohio toxic air in DMV? by ghostofhogan

Experts on the ground have compared this to a nuclear bomb being set off over the town. While this is also hyperbole, you can’t blame people for freaking out about this. This event was much worse than just “bad” for the people affected by it.

3

mrsgeologist t1_j8i2tj0 wrote

Reply to comment by [deleted] in Ohio toxic air in DMV? by ghostofhogan

Your are almost correct.😊 If the actual half-life (50%) was 1.5 days, then 25% would be 2.25 days. So the high volatilization of vinyl chloride and it’s short half life allows for it to dissipate in roughly 2 days. Could be slightly more but we are splitting hairs at that point.

18

mrsgeologist t1_j8i26d3 wrote

Reply to comment by idenTITTY in Ohio toxic air in DMV? by ghostofhogan

Half life is not just used for radioactivity. Half life of a chemical reaction is the time it takes to reach 50% of its original concentration. That being said, in the environmental and toxicology space, they utilize that term to denote the timeframe where the chemical is of less concern to be in the atmosphere. Vinyl chloride’s volatilization takes 1 to 2 days in air. “If vinyl chloride is released to the atmosphere, it can be expected to exist mainly in the vapor-phase in the ambient atmosphere and to degrade rapidly in air by gas-phase reaction with photochemically produced hydroxyl radicals with an estimated half-life of 1.5 days.” Direct quote from this technical fact sheet: https://semspub.epa.gov/work/05/437069.pdf

17

paulHarkonen t1_j8hrf6j wrote

Awfully tough to de-escalate with someone committed to doing violence.

Look, I applaud your belief that no one needs to die at the hands of police and I agree that policing in the US is deeply broken right now. But when you take more extreme stances and use hyperbolic examples/statements you undermine the goals of actual change.

Yes the police should reduce their use of force, yes they should improve their training to avoid these types of incidents, but also yes, sometimes lethal force is necessary to protect themselves and the public for violent people with weapons (not just guns).

7

Gray_side_Jedi t1_j8hpxf6 wrote

Except he was “not complying” by continually reaching somewhere/for something in the Jeep. So of course that’s going to make the cop nervous, because there’s no idea what the guy might have been trying to reach for: Snickers bar, firearm, take your pick. You keep doing something that makes the officer nervous and potentially poses a risk to them, there’s gonna be consequences…

6